Building for gaming 2500k or 3570k Ivy

[cmdrdredd]

Intel graphics won't be used and probably not going to use quick sync. Any reason to get the 3570k at all? I understand that if both were at 4.2Ghz the 3570k would beat out the 2500k in benchmarking, but at a higher cost in terms of heat output. Is the performance per clock worth the heat?

Both would be on a z77 board with 8GB memory.

Gotta make a recommendation for a co-worker who wants to build a new PC with his tax return. I was going to say just go with Ivy but i wanted to know if the heat difference was worth the extra performance.

 

[Hatisherrif]

Ivy! It's basically the same considering the fact that it is faster per clock but also gets hotter which limits its OC a bit. So if you add a better iGPU and a newer platform to that, it's a clear win for new setups.

 

[Zebo]

Only reason to buy SB is sky high overclocking like above 4.7-4.8. Otherwise IB is better in every way.

The problem w the ivy is power, volts and heat which will send it in throttle mode ~ 105 I think. And 105C is normal at 5 Ghz on water. Improbable/impossible on air.

 

[ShintaiDK]

I understand that if both were at 4.2Ghz the 3570k would beat out the 2500k in benchmarking, but at a higher cost in terms of heat output. Is the performance per clock worth the heat?

Remember Ivy uses less power doing so. Also it doesnt matter if 4.2Ghz is your goal and Sandy is 60C and Ivy 75C. Its still perfectly fine temps. If you worry about lifespan. Then I can tell you heat doesnt kill CPUs (It would also throttle before.). Voltage is the real killer.

 

[Hubb1e]

Remember that just because Ivy gets hotter, doesn't mean it produces more heat. Ivy is more efficient than Sandy under normal voltages and just gets hotter because the dies are smaller and can't dissipate the heat quickly enough. A match can be extremely hot, but a campfire produces more heat.

 

[Concillian]

I understand that if both were at 4.2Ghz the 3570k would beat out the 2500k in benchmarking, but at a higher cost in terms of heat output. Is the performance per clock worth the heat?

This is not correct. The performance ranking is correct, but the heat ranking is backwards.

Both at 4.2 GHz, IVB will slightly outperform SB:
IVB will produce less heat than SB, but have a higher temperature than SB.

There is no downside to the high temps if your are mild OCing and the temps are controllable. For a build like this, the CPU is largely irrelevant go with IVB if you care about energy consumption or heat output. If you don't care about those things, then the difference in performance while gaming between the two at similar overclocks is not going to be noticeable, so get whichever is cheaper.

 

[cmdrdredd]

Remember Ivy uses less power doing so. Also it doesnt matter if 4.2Ghz is your goal and Sandy is 60C and Ivy 75C. Its still perfectly fine temps. If you worry about lifespan. Then I can tell you heat doesnt kill CPUs (It would also throttle before.). Voltage is the real killer.

I understand. I was looking for opinion rather than fact. Basically I was wondering if anyone thought the extra heat wasn't worth it. Seems like non-issue.

This will be under a good air cooler. Maybe a NH-D14 or similar higher end HSF.

 

[Don Karnage]

Only reason to buy SB is sky high overclocking like above 4.7-4.8. Otherwise IB is better in every way.

The problem w the ivy is power, volts and heat which will send it in throttle mode ~ 105 I think. And 105C is normal at 5 Ghz on water. Improbable/impossible on air.

Power and volts aren't the problem with ivy. Problem with ivy is that the die is so small it cannot dissipate the heat fast enough compared to sandy.

 

[Tempered81]

Intel graphics won't be used and probably not going to use quick sync. Any reason to get the 3570k at all? I understand that if both were at 4.2Ghz the 3570k would beat out the 2500k in benchmarking, but at a higher cost in terms of heat output. Is the performance per clock worth the heat?

Both would be on a z77 board with 8GB memory.

Gotta make a recommendation for a co-worker who wants to build a new PC with his tax return. I was going to say just go with Ivy but i wanted to know if the heat difference was worth the extra performance.

Yeah if you don't plan on clocking above 4500-4600, or if you have good custom watercooling, the Ivy is the better choice (considering that cost, cache & HT are equal).

 

[LagunaX]

3570k + z77 with Virtu MVP license + ddr3 2133+ + SSD.
NH-D14, set multi to 45 and test Prime blend at 1.2 to 1.25v.
You'll be under 80c for temps.
Or you could do 42 at stock volts and be under 70c for temps.

Read a similar thread here:
http://forums.anandtech.com/showthread.php?t=2242909

 

[Don Karnage]

Here's an easy perspective

 

[Zebo]

I would like to see temps from someone using a direct impingement block - bit tech uses the H100 which is not and that processor was seeing 105C in load.

All that really matters is you keep it below about 95C to give a good margin for dust and ambient temp changes and such so you don't throttle.

With such a small die you need to remove heat more effectively and I think diret impingement may be solution for high, safe, stable, OCs with ivy. Air, you're screwed.

 

[Remobz]

I say go with IVY. But, if budget is a concern then pick the cheaper one.

Either way, you will still be happy I am sure.

 

[Concillian]

I would like to see temps from someone using a direct impingement block - bit tech uses the H100 which is not and that processor was seeing 105C in load.

All that really matters is you keep it below about 95C to give a good margin for dust and ambient temp changes and such so you don't throttle.

With such a small die you need to remove heat more effectively and I think diret impingement may be solution for high, safe, stable, OCs with ivy. Air, you're screwed.

I want to see a special IVB impingement block that locates the nozzle above the area where the CPU portion of the chip is rather than in the center of the block.

Edit: N/M Looks like the Cores are in the center:
http://www.itproportal.com/2012/04/24/picture-ivy-bridge-vs-sandy-bridge-gpu-die-sizes-compared/


It does look like IVB has dedicated about 5-10% more of the silicon to GPU though, so any size comparisons should take into account that IVB CPU portion is even smaller than the raw silicon suggests.

 

[guskline]

Intel graphics won't be used and probably not going to use quick sync. Any reason to get the 3570k at all? I understand that if both were at 4.2Ghz the 3570k would beat out the 2500k in benchmarking, but at a higher cost in terms of heat output. Is the performance per clock worth the heat?

Both would be on a z77 board with 8GB memory.

Gotta make a recommendation for a co-worker who wants to build a new PC with his tax return. I was going to say just go with Ivy but i wanted to know if the heat difference was worth the extra performance.

I would go Ivy. You have an Ivy MB. Spend some extra dough and get a decent cooler. I Have a Hyper212+ (2 fans) on the one 2500K OC'd to 4532 and a Corsair H60water cooler with 2 fans on the other 2500K. Both work well. If the OC is to 4.2 you should be fine but I would still get an aftermarket cooler. Not that expensive.

 

[RampantAndroid]

Yeah if you don't plan on clocking above 4500-4600, or if you have good custom watercooling, the Ivy is the better choice (considering that cost, cache & HT are equal).

With the added benefit of PCIe 3.0 capability, if you plan to get a PCIe3 card soon, or keep the CPU long enough that you might upgrade to one later.

 

[cmdrdredd]

I would go Ivy. You have an Ivy MB. Spend some extra dough and get a decent cooler. I Have a Hyper212+ (2 fans) on the one 2500K OC'd to 4532 and a Corsair H60water cooler with 2 fans on the other 2500K. Both work well. If the OC is to 4.2 you should be fine but I would still get an aftermarket cooler. Not that expensive.

As I said...likely a NH-D14 will go on it. Not low end. Just really looking for 24/7 reliability. 4.2Ghz is a very respectable speed I think.

 

[guskline]

With a NH-D14 go Ivy!

 

[cmdrdredd]

OK we got the list all together now. We are going to order parts tomorrow and build next week. I am using this as a learning experience for my coworker too. This way he can perform his own upgrades in the future, teach him how a PC goes together. Thanks for the quick info everyone.

 

[hapylol]

Definitely Ivy

 

[aaksheytalwar]

Heat shouldn't be relevant unless it impacts something like oc or power or anything else or even lifespan. Just go ivy

 

[blastingcap]

FWIW, I had the same dilemma. I went Ivy for complete compatibility including PCI 3.0 and also for the greater power efficiency. I do not plan on monster overclocks--probably no more than 4GHz or whatever stock voltage can give me. I think overvolting CPUs is stupid from a power/perf perspective anyway in addition to the other costs it nets you including possibly needing a stronger mobo, PSU, cooler, etc. I mean, for gaming you will be GPU limited in the end no matter how much you oc your CPU, if you game at high resolutions with settings up. No point in spending $$$$ and lots of power to oc the CPU when you could spend the $$$$ and power on a GPU instead.

 

[Renegade_09]

I want something that runs cooler. With summer coming I want to build a computer that generates the least amount of heat as possible without affecting the performance I need it for. Which would be the cooler CPU running at stock speeds or a slight overlock to 4.0 to 4.2 ghz?

 

[ShintaiDK]

I want something that runs cooler. With summer coming I want to build a computer that generates the least amount of heat as possible without affecting the performance I need it for. Which would be the cooler CPU running at stock speeds or a slight overlock to 4.0 to 4.2 ghz?

In terms of heat in your room. Ivy wins hands down.

 

[Renegade_09]

alright thanks. Ivy Bridge it is then. Something unrelated, what GPU would be good that won't generate as much heat in my room for around $100-$150. I was thinking of getting the 6780 to run Diablo 3.