Post your 1080 ti Overclocking results

[FiLeZz]

What are your GPU clocks at? I just installed my two 1080 ti's and have EK waterblocks on them. I have not had any time to play with them yet. I have them at 2025mhz and temps at 45c at load without throttling. I am hoping to get them to 2100mhz. Update to come as I make progress.

Share what your results are.

 

[ddogg]

2125/6000 on a swiftech waterblock with +50 voltage. Getting 35-38C load temps. You should be able to hit 2100/6000 without issues unless you got unlucky.

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[FiLeZz]

I have not had any time as of yet. A set of two year old twins and a one year old will do that to you. It was all I could do to get the cards in my loop. I will start tweaking with some voltage this weekend. I might need to bring up my fans a little too. My rig is making a little more heat then yours. The two cards warm my temps rather well. I have a 480 double stack rad and a 360 rad in the loop. I have not ramped up fans yet as I like it to quite. Not that I can hear fans over all the noise the kids make.

 

[ddogg]

45 load temp is nothing to sneeze at so you shouldn't have any throttling. I have a 60mm 480 rad on top, 60mm 360 at the bottom and dual swiftech mcp655 pumps in the loop. Bottom rad is in push pull config and top is just pull. That might contribute to my slightly lower temps but my setup is overkill lol.

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[moonbogg]

2114/5800 under an EK block. Fans and pump are on lowest settings, so temps hit 45c under load. BF1 shows very stable clocks while tomb raider will throttle down to 2088 or so then go back up. Memory is stable at 6000, but I haven't seen any performance benefit to it at all, so I left it down a bit in an effort to save some power for the GPU. Not sure if that's working though. Some people have struggled to hit 2100 and others can hardly reach 2000, so if you are in the 2100 club, perhaps we should consider ourselves lucky. Then again not sure if they were under water though. I've heard of some hybrids being unable to reach 2100.
Running three 360 rads here. Pretty thick, 60mm each. Temps are easy to manage with only 1 gpu.

 

[RaistlinZ]

2025/5800. Gaming temps get up to about 67C with custom fan profile.

 

[Jackie60]

1962/5760 ref on air. It won't sustain over 2ghz for any length of time before becoming unstable when gaming (SWBF). Almost exactly the same as my Titan XPs ran at but with much lower temps (65-70C instead of 84C).

 

[KaRLiToS]

Does anyone calculate their loop temperature.

I have 2 x GTX 1080ti on the way and before I had 4 x 290x.

-Feser X Changer 240mm push/pull
-Feser X-Changer 360mm push/pull
-Feser X-Changer 480mm push/pull
-External Watercool MoRA3 Pro 1080mm in push

With the extraction of four hot 290x and only having two cards in the loop, I had plan to remove the MoRA3 radiator and a pump and sell them. (Have 3 mcp655 pumps right now)

If someone manage to give me there water temperature under load, it'll be easier for me to make a decision.

 

[ddogg]

I've never monitored my loop temperature but with that much radiator and 3 pumps you should have <40c temps.

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[KaRLiToS]

I've never monitored my loop temperature but with that much radiator and 3 pumps you should have <40c temps.

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Water temp never went above 32 'c with 4 x 290x's OCed to 1200/1400mhz. My OCD cannot tolerate higher than that. And I have two sensors in my loop. One before the GPUs and one after and I can tell you the temps are the same.

I just want to eliminate that external rad and still be under 30'c water temp.

 

[pj-]

2125/6000 on a swiftech waterblock with +50 voltage. Getting 35-38C load temps. You should be able to hit 2100/6000 without issues unless you got unlucky.

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2125 seems super above average. What OC do you have on the core?

 

[ddogg]

2125 seems super above average. What OC do you have on the core?

+225. Don't think it's really that much above average. Most people with waterblocks are getting +200 (2100). Thermals severely limit the potential of this card.

 

[railven]

Max OC: 2025/5950 w/ +25mv.

Every day clocks 2025/5750 w/+25mv.

My chip goes no higher then 2050 stable and that's only at +50mv, which is not worth it to me.

 

[Valantar]

Water temp never went above 32 'c with 4 x 290x's OCed to 1200/1400mhz. My OCD cannot tolerate higher than that. And I have two sensors in my loop. One before the GPUs and one after and I can tell you the temps are the same.

I just want to eliminate that external rad and still be under 30'c water temp.

I don't know how much this helps, but according to Overclockers.com, their overclocked 1080Ti system (with a 7700k@4.2) used 411W running Fire Strike Extreme, while their 290X system (with a 4770K) needed 488W for regular Fire Strike when OC'd. As such, heat output should be comparable or lower for your new cards, there will just be half as many of them. I don't know what CPU you are using (or its clocks), but it should be possible to estimate loop temps from calculating the reduction in heat output vs. the reduction in radiator cooling performance. Of course, changes in flow rate due to two less blocks, one less rad and one less pump throws quite a few wrenches into the gears of estimates like this, but I'll give it a try. Given that the rad you want to get rid of is 9*120mm, that's very roughly equal to the rest of your loop (at least all your rads are the same thickness, I didn't look up fin density and the like). However, it's only set up in push, while the rest is push/pull, so it's not responsible for quite 50% of the cooling. Let's call it 40%. That depends on fan speeds too, of course. If your four 290x's each consume ~350W, and you have a 200W CPU, that's a total heat output of ~1600W max (what PSU do you have in that rig? That's pretty bonkers). Now that's being reduced to, say, 900W, a 44% reduction. Given that Pascal cards are inherently more efficient than Hawaii cards (both idle and load), I'd say that sounds reasonable to me. That should match your reduction in cooling potential reasonably well too (if the change in flow doesn't mess too much with things). So my napkin math says you should be okay. But then again, napkin math isn't an exact science, and there's a whole heap of assumptions in my calculations. For example: does 4-way XFX stress all four GPUs fully? If I were you, I'd try it out. It's probably the only way to be sure. Put some quick disconnect fittings between your case and the external rad, and it should be easy enough to test out.

 

[KaRLiToS]

I don't know how much this helps, but according to Overclockers.com, their overclocked 1080Ti system (with a 7700k@4.2) used 411W running Fire Strike Extreme, while their 290X system (with a 4770K) needed 488W for regular Fire Strike when OC'd. As such, heat output should be comparable or lower for your new cards, there will just be half as many of them. I don't know what CPU you are using (or its clocks), but it should be possible to estimate loop temps from calculating the reduction in heat output vs. the reduction in radiator cooling performance. Of course, changes in flow rate due to two less blocks, one less rad and one less pump throws quite a few wrenches into the gears of estimates like this, but I'll give it a try. Given that the rad you want to get rid of is 9*120mm, that's very roughly equal to the rest of your loop (at least all your rads are the same thickness, I didn't look up fin density and the like). However, it's only set up in push, while the rest is push/pull, so it's not responsible for quite 50% of the cooling. Let's call it 40%. That depends on fan speeds too, of course. If your four 290x's each consume ~350W, and you have a 200W CPU, that's a total heat output of ~1600W max (what PSU do you have in that rig? That's pretty bonkers). Now that's being reduced to, say, 900W, a 44% reduction. Given that Pascal cards are inherently more efficient than Hawaii cards (both idle and load), I'd say that sounds reasonable to me. That should match your reduction in cooling potential reasonably well too (if the change in flow doesn't mess too much with things). So my napkin math says you should be okay. But then again, napkin math isn't an exact science, and there's a whole heap of assumptions in my calculations. For example: does 4-way XFX stress all four GPUs fully? If I were you, I'd try it out. It's probably the only way to be sure. Put some quick disconnect fittings between your case and the external rad, and it should be easy enough to test out.

Thanks man for your estimation.

My CPU is a i7 4930k at 4.5 Ghz and my PSU is an EVGA SuperNova 1600T2.

Unfortunately, I don't have the Quad R9 290x anymore, I only have one while I was waiting for new cards to arrive

 

[guskline]

KaRLiTos, sell your MO-RA3 OH NO!!!!!!!!!!!!!!!!!

 

[FiLeZz]

Interesting find on my overclocking. This morning before I went to work, just for giggles, I turned off SLI and was able to hit 2075 mhz with ease. I am almost 100% positive if I used a power curve I could hit 2100 mhz on the cards not in SLI. For SLI I will have to see if unlinking will help me get a higher clock with the cards in SLI.