Need help with my first $3500 ultra-quiet water-cooled 4 GPU system

[KurskKnyaz]

I live in an apartment where I get residential electricity rates ($0.27kWh.) I know that may people will argue against mining Litecoin and Dogecoin because it will take me at least 3 years to get a return on my investment at current coin prices and difficulty. This is true and I may never even get a return at current prices. The reason I’m going to take the risk is because I believe that the prices will go up to at least what they were before and probably will go even higher. If not then I will be in debt and stuck with an awesome gaming system.

I cannot have a computer with 4 GPU fans blowing at max while I’m sleeping. In fact I can’t stand any noise which is why water cooling my only option. I need some advice and input on the system I put together. Consider the following:

• It must be as quiet as possible.
  
  
• My breakers are rated at 20A but I doubt my wiring is rated at 20A
  
  
• I do not care about all the fancy glowing fans, shiny tubing and green colored coolant. I want the water cooling system to be entirely inside my case where it is unseen and unheard. My case will not have a window.
  
  
• I do not plan to overclock my CPU but I might as well add a water block to it. I do not care about getting my components to the lowest possible temperature. It does not matter to me if my GPU runs at 25C under max load or 40C as long as it runs stable and my system is quiet.
  
  
• Reliability is very important to me. This will also be my primary desktop computer where I will go on Facebook and may stop mining for a bit to play Crysis 3. I want an Intel system because in my opinion AMD is budget hardware.
  
  
• I plan to upgrade the GPUs when more efficient and faster ones are available.

I have chosen the following hardware:

[size=+2]

The System:​

[/size]


Case:

Fractal Design Define XL R2 – I currently own the original Define XL and it is awesome. It is built like a tank, has sound insulation padding and a ton of space. The R2 has 9 expansion slots for my 4 GPUs and allows me to mount radiators inside on the front and top​

PSUs:

2X Antec HCP-850 – Why two? These have a nice feature where you can hook up both PSUs together and one will power on the other. I don’t need a total of 1700W but if I spread the load and put two GPUs on their own PSU the PSU fans will spin quieter due to lower load. The other advantage is that I have some headroom for future upgrades. Normally I would go with SeaSonic but from what I head the antec PSUs are the quietest in their power class​

Motherboard/CPU/RAM:

ASUS Z87-WS – I will have 8GB of ram and a 65W Core i5 that I do not plan on overclocking. I chose this motherboard because it has a hardware RAID controller, is made by Asus (I am a fanboy), is known to run well in 4-way CrossFire, and has a ton of features. Not sure if it’s really “server-class” but Asus has never let me down.​

GPUs:

3X VisionTek CryoVenom R9 290 – These come with water blocks and should overclock very well. I’ll get 3 at first to measure the power consumption under full load and maybe then I’ll pop in a 4th one. I should be able to get 900kHs off of each one when overclocked.​

[size=+2]

The Cooling:​

[/size]


Cooling Fans:

4X Prolimatech PRO-USV14 140mm – I heard that these are optimal for cooling radiators and are quieter than the more expensive Silent Typhoons. They are also PWM fans but I probably won’t need this feature and will hook them up to the Fractal’s built in fan controller.​

Radiators:

2X Swiftech MCRx40 – These are 140mm radiators that I will mount to the front and top of the case​

CPU Water Block:

EK-Supreme LTX CSQ – Simple water block to keep my CPU cool even though I’m not overclocking. Will keep things quiet.​

Pump:

Swiftech MCP655 – I heard that this is the quietest pump out there. I do not need PWM control because the GPU’s will always be running. My goal is to set it at the lowest possible speed that will keep my system cool under full load.​

Reservoir:

Bitspower Water Tank Z-Multi 250 Inline – I’m not sure what difference a reservoir makes or what inline means. Is it possible to mount this vertically?​

These are my concerns:

1. Will this setup be sufficient to cool my system with the pump running on the lowest and quietest speed? Again, I need this thing to be as quiet as possible. Can anyone recommend a quieter pump?
   
   
2. I know the rule of thumb is that you use one cooling space (space for 140MM fan) on a radiator for each device. I will have 4 GPU’s and a CPU. Is it pushing it if I throw a 65W Core i5 into the 4 cooling space system?
   
   
3. What effect does reservoir size have on the cooling system? Is the one I picked out unnecessarily big?
   
   
4. I heard that it does not matter how well the water blocks work since they all remove so much heat that the overclocking capability will be limited by the amount of voltage the device you are overclocking can handle. Is that true?
   
   
5. How does radiator size affect the system? I heard that the depth of a radiator makes very little difference and the thinner they are the quieter they are.
   
   
6. This system will run on the lowest fan and pump speed. Will this be enough to keep it cool?
   
   
7. Do I need a particle filter in line with the system or should I just put mesh into the resivour and clean it out eventually if there are any particles.
   
   
8. Is water the best coolant to use?
   
   
9. What fittings and tubing should I use? Again, aesthetics don’t matter I just need them to be reliable.
   
   
10. Is there some kind of sensor I can install that will shut down my system if it starts overheating if the pump fails?
    
    
11. Am I missing anything?

Thanks for all your help!

 

[BonzaiDuck]

I live in an apartment where I get residential electricity rates ($0.27kWh.) I know that may people will argue against mining Litecoin and Dogecoin because it will take me at least 3 years to get a return on my investment at current coin prices and difficulty. This is true and I may never even get a return at current prices. The reason I’m going to take the risk is because I believe that the prices will go up to at least what they were before and probably will go even higher. If not then I will be in debt and stuck with an awesome gaming system.

I cannot have a computer with 4 GPU fans blowing at max while I’m sleeping. In fact I can’t stand any noise which is why water cooling my only option. I need some advice and input on the system I put together. Consider the following:

• It must be as quiet as possible.
• My breakers are rated at 20A but I doubt my wiring is rated at 20A
• I do not care about all the fancy glowing fans, shiny tubing and green colored coolant. I want the water cooling system to be entirely inside my case where it is unseen and unheard. My case will not have a window.
• I do not plan to overclock my CPU but I might as well add a water block to it. I do not care about getting my components to the lowest possible temperature. It does not matter to me if my GPU runs at 25C under max load or 40C as long as it runs stable and my system is quiet.
• Reliability is very important to me. This will also be my primary desktop computer where I will go on Facebook and may stop mining for a bit to play Crysis 3. I want an Intel system because in my opinion AMD is budget hardware.
• I plan to upgrade the GPUs when more efficient and faster ones are available.

I have chosen the following hardware:

[SIZE=+2]

The System:​

[/SIZE]


Case:

Fractal Design Define XL R2 – I currently own the original Define XL and it is awesome. It is built like a tank, has sound insulation padding and a ton of space. The R2 has 9 expansion slots for my 4 GPUs and allows me to mount radiators inside on the front and top​

PSUs:

2X Antec HCP-850 – Why two? These have a nice feature where you can hook up both PSUs together and one will power on the other. I don’t need a total of 1700W but if I spread the load and put two GPUs on their own PSU the PSU fans will spin quieter due to lower load. The other advantage is that I have some headroom for future upgrades. Normally I would go with SeaSonic but from what I head the antec PSUs are the quietest in their power class​

Motherboard/CPU/RAM:

ASUS Z87-WS – I will have 8GB of ram and a 65W Core i5 that I do not plan on overclocking. I chose this motherboard because it has a hardware RAID controller, is made by Asus (I am a fanboy), is known to run well in 4-way CrossFire, and has a ton of features. Not sure if it’s really “server-class” but Asus has never let me down.​

GPUs:

3X VisionTek CryoVenom R9 290 – These come with water clocks and should overclock very well. I’ll get 3 at first to see if my wiring will handle the power under full load and maybe then I’ll pop in a 4th one. I should be able to get 900kHs off of each one when overclocked.​

[SIZE=+2]

The Cooling:​

[/SIZE]


Cooling Fans:

4X Prolimatech PRO-USV14 140mm – I heard that these are optimal for cooling radiators and are quieter than the more expensive Silent Typhoons. They are also PWM fans but I probably won’t need this feature and will hook them up to the Fractal’s built in fan controller.​

Radiators:

2X Swiftech MCRx40 – These are 140mm radiators that I will mount to the front and top of the case​

CPU Water Block:

EK-Supreme LTX CSQ – Simple water block to keep my CPU cool even though I’m not overclocking. Will keep things quiet.​

Pump:

Swiftech MCP655 – I heard that this is the quietest pump out there. I do not need PWM control because the GPU’s will always be running. My goal is to set it at the lowest possible speed that will keep my system cool under full load.​

Reservoir:

Bitspower Water Tank Z-Multi 250 Inline – I’m not sure what difference a reservoir makes or what inline means. Is it possible to mount this vertically?​

These are my concerns:

1. Will this setup be sufficient to cool my system with the pump running on the lowest and quietest speed? Again, I need this thing to be as quiet as possible. Can anyone recommend a quieter pump?
2. I know the rule of thumb is that you use one cooling space (space for 140MM fan) on a radiator for each device. I will have 4 GPU’s and a CPU. Is it pushing it if I throw a 65W Core i5 into the 4 cooling space system?
3. What effect does reservoir size have on the cooling system? Is the one I picked out unnecessarily big?
4. I heard that it does not matter how well the water blocks work since they all remove so much heat that the overclocking capability will be limited by the amount of voltage the device you are overclocking can handle. Is that true?
5. How does radiator size affect the system? I heard that the depth of a radiator makes very little difference and the thinner they are the quieter they are.
6. This system will run on the lowest fan and pump speed. Will this be enough to keep it cool?
7. Do I need a particle filter in line with the system or should I just put mesh into the resivour and clean it out eventually if there are any particles.
8. Is water the best coolant to use?
9. What fittings and tubing should I use? Again, aesthetics don’t matter I just need them to be reliable.
10. Is there some kind of sensor I can install that will shut down my system if it starts overheating if the pump fails?
11. Am I missing anything?

Thanks for all your help!

You need to hear from AigoMorla. I'd try and convene a séance, but he's not dead. I'm sure he'll have a lot to say about your project.

In the meantime, I'm just conflicted over getting a twin 780 GTX for my rig. Seeing what you propose here, I'm more tempted to do it than I was this morning.

 

[DigDog]

You need to hear from AigoMorla. I'd try and convene a séance, but he's not dead. I'm sure he'll have a lot to say about your project.

In the meantime, I'm just conflicted over getting a twin 780 GTX for my rig. Seeing what you propose here, I'm more tempted to do it than I was this morning.

tsk stk .. quoting that humongous post .. almost ate a whole page.
powers of snipping, i summon thee!

 

[dma0991]

These are my concerns:

1. Will this setup be sufficient to cool my system with the pump running on the lowest and quietest speed? Again, I need this thing to be as quiet as possible. Can anyone recommend a quieter pump?
2. I know the rule of thumb is that you use one cooling space (space for 140MM fan) on a radiator for each device. I will have 4 GPU’s and a CPU. Is it pushing it if I throw a 65W Core i5 into the 4 cooling space system?
3. What effect does reservoir size have on the cooling system? Is the one I picked out unnecessarily big?
4. I heard that it does not matter how well the water blocks work since they all remove so much heat that the overclocking capability will be limited by the amount of voltage the device you are overclocking can handle. Is that true?
5. How does radiator size affect the system? I heard that the depth of a radiator makes very little difference and the thinner they are the quieter they are.
6. This system will run on the lowest fan and pump speed. Will this be enough to keep it cool?
7. Do I need a particle filter in line with the system or should I just put mesh into the resivour and clean it out eventually if there are any particles.
8. Is water the best coolant to use?
9. What fittings and tubing should I use? Again, aesthetics don’t matter I just need them to be reliable.
10. Is there some kind of sensor I can install that will shut down my system if it starts overheating if the pump fails?
11. Am I missing anything?

1. Single pump will get the job done but it won't provide you with the optimum flow rate since this would end up being a very restrictive single loop with one CPU block and four GPU blocks. Dampen the vibration of the pump by placing it on a sponge and it should be near silent.

2. As it is right now, 3-4 GPUs alone would have overwhelmed the two 240mm radiators you've listed. With the specs you've listed, you're probably looking at one or two, double thickness 480mm radiators.

3. Reservoir is meant to contain excess liquid and to make filling a lot easier than having to pour into a narrow spout. Reservoir can also be an eye candy. It doesn't have to be large; just get what you need if it doesn't matter to you.

4. Even if you're using LN2, you're still limited by the amount of voltage that the CPU can handle. Some CPUs does it better than others, its a silicon lottery. Regardless, watercooling is better, cheaper and consumes less power for long term use compared to phase change or LN2.

5. Thicker radiators will obviously mean better performance. Since it is constrained to standard sizes (120mm, 140mm), making it thicker is one way of making it perform better. If you want a quiet radiator, get ones that have low FPI. The less denser fins means less performance but it is quieter with slower fans.

6. You will have to compensate lower fan speed with more radiator surface area.

7. There shouldn't be any particles in the water but there will be algae growth in the water over time. Remember to add a silver coil to your shopping list.

8. Its the best in terms of price and what it does. It won't perform better than the special coolants but it has no downside (gunking, staining) if its used with a silver coil.

9. Barbs with cable ties and clear Tygon tubing should do just fine.

10. You can add an inline flow meter connected to fan speed header with a speed readout and alarm. This can be done but not necessary as the computer would automatically shutdown or thermal throttling if CPU or GPU temps reaches critical levels.

11. I don't know where it is stated that the Prolimatech PRO-USV14 is better than the Scythe GTs but from my visual observation, it shouldn't be the case. It will be undoubtedly be quieter as it runs a lot slower than a 1850RPM Scythe GT but it should have worse performance because its slower. The slim profile of the fan would probably make it perform worse when it comes to static pressure (crucial for radiators). The rounded corners are also not a good aspect as you're allowing air to escape rather than pushing all of the air through the radiator.

 

[KurskKnyaz]

How is radiator size measured? This is what my case supports according to the specs:

◦Front – 240mm radiator when HDD cages are removed or repositioned
◦Top – 240 and 280mm when using slim radiators
◦Bottom – 120mm radiators
◦Rear – 120 and 140mm radiators

Did I get the right radiator size?

Also, If I hook up all the PWM fans to the fan controller and run them at 5v will they work?

 

[BonzaiDuck]

tsk stk .. quoting that humongous post .. almost ate a whole page.
powers of snipping, i summon thee!

Should I go back and edit it out? I must have been in a hurry when I clicked "Submit Reply." My apologies!!

 

[dma0991]

How is radiator size measured?

It is based on assumption. But I will assure you that two 240mm radiators are not sufficient for 4 R9 290 GPUs and a CPU.

Did I get the right radiator size?

A rough assumption is that a regular thickness, single 120mm dissipates about 150W. A single R9 290 does about 250-300W, so it can be said that each GPU will require a 240mm slim radiator. So for the whole setup, you're probably looking at two slim 480mm radiators or two thick 360mm radiators, but preferably two thick 480mm radiators.

 

[Tweakin]

There are, IMHO way too many deficiencies to start with. The system will be crippled with those rads (crippled may be too harsh), and I understand that you are not looking for the lowest thermal, just silent and reliable...kudos!

I'd start off with a mcp-35x in dual configuration for pressure and flow, add some Alphacool ST-45's (would recommend the ST-30, but you are going to have enough restriction with four gpu blocks), and I would shoot for at least 720mm of rad space. I would recommend 1000mm of space to be really efficient.

I would also recommend using 120mm models as the fan selection is much better. Silent cooling with GT-14's or e-loop bp2 would be really quiet.

I suggest you go to Martins Liquid Lab and start reading.

 

[Tweakin]

...single 120mm dissipates about 150W...

If that assumption was correct, that fan would be running at 3000rpm. A Alphacool ST-30, probably the best low-rom solution on the market, in a 360mm format (3x120) will only dissipate 100-150 watts with a sub-1000 rpm fan.

 

[dma0991]

If that assumption was correct, that fan would be running at 3000rpm. A Alphacool ST-30, probably the best low-rom solution on the market, in a 360mm format (3x120) will only dissipate 100-150 watts with a sub-1000 rpm fan.

150W for a 120mm slim radiator and silent fan(800-1500RPM)is a fair assumption. If you'd need 360mm to dissipate 150W of power, it would render watercooling too inefficient.

Its really just an assumption. It should perform better or worse, depending on various factors. Even the Asus ARES II managed to dissipate 600W with decent temps and noise (<60C @ 2kRPM) using only a single thick 120mm radiator and an anaemic pump.

 

[Tweakin]

Op, I would really recommend you read some of the reviews over at Martins.

Here is some factual information from his site:

Alphacool NexXosS ST-30 360mm Rad

Alphacool NexXosS XT-45 360mm Rad

 

[coffeejunkee]

You plan to mine at night, in the same room that you are sleeping in?

If so, I think this will be impossible. Even 500rpm fans will be noticeable at night without much ambient noise. And you will need a whole lot of those to cool 3x 290 at full load.

 

[krnmastersgt]

The system you are trying to cool while going for low noise is absolutely monstrous. Pretty much the hottest rig you can possibly build with modern components lol.

That being said while you might be able to adequately cool the system with for example 4 fans (not possible, just an example) if noise levels is the goal you want to get as many fans as you can. Why? Well more fans follows the same logic as bigger fans, you can get identical airflow with each individual fan running at lower RPMs, while more fans can generate more noise as the noise from each can sort of add up, at a low enough RPM most fans are pretty much silent to humans.

On that note, I really think you need to change that case out to either something custom built to give you a ton of big radiator mounting options, or if you want something that is a bit more mainstream I would suggest going for either the Corsair 900D or the Phanteks Enthoo Primo. I can't think of many cases in their realm of radiator mounting options as these cases are absolutely huge and designed for maximum rad space for the most part. They are so designed for water cooling that these cases actually perform very poorly in terms of air cooling due to the fan mounting positions and more importantly they're so damn big!

One other thing to note, I hope you have your AC running at night or some really cool air in your room as 4 GPUs all mining will output tremendous heat, watercooling gives you better potential temps and at better noise levels typically BUT this means they will displace the heat into your room more. More efficient cooling =/= less heat generated, the same heat is being generated by your system regardless unless it hits a thermal throttling point, and when you have a more efficient cooling set-up it means you're more effectively taking the heat away from the components and putting it into the environment around the system.

 

[BonzaiDuck]

The system you are trying to cool while going for low noise is absolutely monstrous. Pretty much the hottest rig you can possibly build with modern components lol.

That being said while you might be able to adequately cool the system with for example 4 fans (not possible, just an example) if noise levels is the goal you want to get as many fans as you can. Why? Well more fans follows the same logic as bigger fans, you can get identical airflow with each individual fan running at lower RPMs, while more fans can generate more noise as the noise from each can sort of add up, at a low enough RPM most fans are pretty much silent to humans.

. . . .

That's probably the tradeoff -- more quiet fans, versus fewer but noisier high-output fans. I've tried to make a case to move the line toward fewer fans and still mitigate noise. WoodButcher may try and replace three fans on his radiator with one, but he would build some sort of duct and pad it with Spire. It still requires some attention to distributing the airflow.

My idea for a water-cooled system involves use of Phobya 200mm-square radiators and a single 200mm fan for each. My HAF cases are at least equally designed for air-cooling and air-flow, but -- unless I'm off on a wrong track here -- it's something to think about while we wait for the next Intel "E" chips.

 

[WoodButcher]

On that note, I really think you need to change that case out to either something custom built to give you a ton of big radiator mounting options,

I wouldn't suggest a case or specific hardware as I am not current on either at this time but will simply say the hardware you have specced and what you need to cool it won't fit that case.
Don't forget hard drives, I prefer notebook drives for their diminutive size, and a cd/dvd, again I use notebook hardware for these, maybe a fan control and the fact that those PSU you list are while modular, longer than the normal ATX PSU.
A bare minimum of radiator for 4 vid cards, cpu, and motherboard would be ten 120mm fans, and a second pump, add into the case all the tubing and wire to run this beastie and you will need at least a second case side by side.
Your looking for quiet?

Add four more rad fan slots or use a pair of the Mora rads.

IMO if you want quiet for this rig go with one PSU and stay on air, downclock and undervolt everything and you may have a shot with that case.

 

[FAQdaworld]

I agree with the others here, you definitely need a ton more radiator for this setup, and also since you dont want to hear this thing, then you're gonna need even more radiator so we have more surface area with with to cool this water. I'd also reccommend a second pump, that will add the bulletproofing that you desire.

Watercooling *CAN* be quiet, the problem is for this type of setup its going to be really difficult to get all of that to run quietly and cool!

 

[aigomorla]

You need to hear from AigoMorla. I'd try and convene a séance, but he's not dead. I'm sure he'll have a lot to say about your project.

just because im quiet does not mean im dead....

Also as everyone has said.. your seriously lacking radiators....

Also dual PSU setups are sort of tricky... how did u intend to split the psu's up?

Typically u want all your GPU's on one.. and everything else on the other.
You do NOT want to split your GPU's up on 2 different PSU's.

Also dual PSU setups are more headaches then they are worth in the long run.

Id consider grabbing a 1200W psu and going single b4 someone asks me to split my psu's up.

 

[KurskKnyaz]

On that note, I really think you need to change that case out to either something custom built to give you a ton of big radiator mounting options, or if you want something that is a bit more mainstream I would suggest going for either the Corsair 900D or the Phanteks Enthoo Primo. I can't think of many cases in their realm of radiator mounting options as these cases are absolutely huge and designed for maximum rad space for the most part. They are so designed for water cooling that these cases actually perform very poorly in terms of air cooling due to the fan mounting positions and more importantly they're so damn big!

The Fractal comes with lots of padding and I prefer the minimalist aesthetics. I think in a worse case scenario I'll get an external radiator if the setup does not work. Remember I'm not trying to get the lowest temp possible; just a temp low enough for my cards to overclock. From what I understand if my cards are running at 50c or 65c overclocked it doesn't really matter. Its not like the cards will overclock better if they go down to 50c because from what I understand there comes a point where you will be limited by how much voltage the GPU can handle not by how much heat it produces.

One other thing to note, I hope you have your AC running at night or some really cool air in your room as 4 GPUs all mining will output tremendous heat, watercooling gives you better potential temps and at better noise levels typically BUT this means they will displace the heat into your room more. More efficient cooling =/= less heat generated, the same heat is being generated by your system regardless unless it hits a thermal throttling point, and when you have a more efficient cooling set-up it means you're more effectively taking the heat away from the components and putting it into the environment around the system.

I think my room will be big enough to dissipate the heat released into it. Which brings me to my next question about reservoir size: Will having more coolant in my system keep temperatures lower in the same way that having more heat sink surface area can make a difference when cooling a CPU. What about cooling the water tank with a peltier cooler?

 

[KurskKnyaz]

just because im quiet does not mean im dead....

Also as everyone has said.. your seriously lacking radiators....

I've read up on water-cooling systems and it seems like those systems with lots of radiator are running their GPUs at 40C overclocked. I'm interested if those GPUs can run them at stable temps like 70c if the subtract radiators. Again, I'm only looking to cool my system to the lowest stable temp for my overclocked cards. I do not need to cool them to unnecessary low temperatures.

Also dual PSU setups are sort of tricky... how did u intend to split the psu's up?
Also dual PSU setups are more headaches then they are worth in the long run.

The Antec PSUs can be connected together. So when the main PSU powers up it will power up the second one. I can use one PSU for the system and two GPUs and the other one just for the other two GPUs. My concern is how and where to mount the second one in a single PSU case.

Typically u want all your GPU's on one.. and everything else on the other.
You do NOT want to split your GPU's up on 2 different PSU's.

Why is that?

 

[krnmastersgt]

Very few cases are designed with the ability to run 2 power supplies, Antec launched one but that thing is quite tall and in the realm of the 900D in size. And I still do not believe that you can possibly cool that kind of set-up on only 480mm of rad space. That's basically saying you trust a single 120mm fan to cool the 1 entire GPU plus have a little leftover to cool the CPU while cycling the same air between them all.

Even if that set-up COULD cool your whole system adequately it'd be running something like one of those Delta 38mm fans at max rpm to get enough airflow going through the radiators to dissipate the heat.

Think of it this way, a single fan radiator is enough to cool most overclocked Intel CPU's without too much noise. An overclocked i7 puts out somewhere in the realm of ~100-130w depending on the voltage (ballpark estimate for example), a single R9 290 is rated at an estimated 350w at full load non-overclocked. When you go 3 times the power consumption (and therefore heat output in our case) you can't expect to go 4x on the fans/rad space and increased the heat output of the system by 13x and have it be quiet in any regard.

And the only single external rad that could solve this heat issue is one of those ugly 3x3 120mm radiators which is going to require it's own set-up just to be seated somewhere near your desk. Also size of your room =/= heat elimination, it'll simply take longer for your room to heat up but if you have 4 290s mining all night long that's a huge amount of heat they'll be generating and dumping into your bedroom.

Answering your reservoir question, yes and no; it technically gives it more water to heat up but not by enough to make it worth getting a huge reservoir outside of aesthetics or some special loop set-up. As far as using a cooling plate for your reservoir, the amount of noise and heat that something like that would generate is probably better spent on getting more radiators in place.

tl;dr: Not feasible to run dual PSU's with quad 290s and an overclocked CPU in a case that small. The cases that will be able to fit your type of set-up, and be able to adequately cool your whole system while being nearly silent is going to be large enough that your entire case will sit in the center bay of the case you need more or less.