Can a single swiftech MCR 120 cool a 4870x2?

[tajoh111]

Will a single swiftech MCR120 cool a 4870x2. Or should I just use the BIX 360(which I have) on it. I was thinking it was overkill for just the videocard and since temps really dont effect performance so much on the cards it wouldn't matter too much.

If I used the swiftech, I would do a dual loop for sure.

Another idea is running a single loop double pumped by dual MCP655. The reason for this is the BIX since I thought could be overkill for strictly the videocard, might have some addition cooling ability so combined with the pa120.2 that is already cooling the CPU might give better performance for CPU temps.

I am currently cooling a core i7 with a pa120.2 alone right now.

I have the BIX 360 and both pumps already.

[pur]

Sure it will work. It will just run hot.

There are so many variables.... You could probably run an entire system off a mcr120 if you had a couple tornados on it...

Try the search feature out, there are many very similar threads.

[DavidNJ]

That video card has twice the heat of an OC CPU. A little hot does not do it justice. It could be totally inadequate, less than the stock air cooling. That card is over 400watts I believe. My own experience with an MCR220 on an overclocked Q6600 B3 (200-220w) and Q6700 G0 (180-200w) is that it would get close to my limit of 60C when the case affects airflow (inside or outside) and ambients get to 27-30C. A single GPU would be kinda Ok.

[modzona]

Sapphire ATI Radeon HD 4870 X2 Atomic Take a look at this. Its a 4870x2 and CPU cooling with one 120x120 rad.

[warriorpoet]

Sapphire ATI Radeon HD 4870 X2 Atomic Take a look at this. Its a 4870x2 and CPU cooling with one 120x120 rad.

Terrifying. Have you seen the temps they got on review

[Levish]

Terrifying. Have you seen the temps they got on review

its still around 15c better than the stock solution, which is kinda bad :s

[highoctane]

Yeah but those temps where also with the cpu in the loop, you would think you could heat the water for your ramen with that loop.

It actually did better than I would have thought it would do really.

[bball4ever39]

Of course it will cool it, it will be cooler than without a cooler most definitely so yes its cooling it. Is it going to give you very good temps and be an efficient cooler? I would have my doubts. At least not without some insane fans on it. Although if you had good fans and a nice low ambient temp I'm sure you could get by just fine.

Like Pur said though, there are just too many variables to really give you an accurate answer.

[fornowagain]

That video card has twice the heat of an OC CPU. A little hot does not do it justice. It could be totally inadequate, less than the stock air cooling. That card is over 400watts I believe.

Its not using anything like 400W, TDP is something like 263W iirc. So less than that in use. Still too much for a single 120 rad I would say.

[NaeKuh]

i think the mcr120 could possibly do it with a LOUD fan.

The lowest i recomend tho is a mcr220 if you value your hearing.

[smee]

My dads running this loop with a single 120 rad:

DD TDX= 6000+ x2
MCW30 2x nb and sb
DD full cover 2x on two 8600gts's

temps are all under 45c load (thats everything, gpu's, nb sb, cpu)

HOWEVER, he also does have his 2gallon custom built res that might be contributing a little bit to the good temps, but after running the system loaded for 7 hours the temps are still under 45c load...

[T_Flight]

Do they make a 6000 rpm contra-rotating 120mm fan?

[DavidNJ]

Its not using anything like 400W, TDP is something like 263W iirc. So less than that in use. Still too much for a single 120 rad I would say.

All the reviews have a regular 4870 at 270 watts. A 4870x2 is around 450.

[warriorpoet]

All the reviews have a regular 4870 at 270 watts. A 4870x2 is around 450.

That's total system draw

[fornowagain]

All the reviews have a regular 4870 at 270 watts. A 4870x2 is around 450.

Is that right? Funny thing then it only has power connections rated to 300W.

450w is the total system draw, AFTER efficiency losses. So 385W from the PSU and that includeds the cpu, memory, mother board, hard drive...

[NaeKuh]

there is no way a HD4870X2 generates 450W of heat.

id believe 350... 450... no way....

[sabe]

That video card has twice the heat of an OC CPU. A little hot does not do it justice. It could be totally inadequate, less than the stock air cooling. That card is over 400watts I believe. My own experience with an MCR220 on an overclocked Q6600 B3 (200-220w) and Q6700 G0 (180-200w) is that it would get close to my limit of 60C when the case affects airflow (inside or outside) and ambients get to 27-30C. A single GPU would be kinda Ok.

Wrong, I have one.

Never drew more than 450W, total power drawn by the whole system out of the wall. Factor in PSU efficiency issues, probably less than 400W.

[DavidNJ]

I am getting the number from the reviews...if it drew less that 400w, the a 4870 would draw less than 200...which isn't the case.

[T_Flight]

I am getting the number from the reviews...if it drew less that 400w, the a 4870 would draw less than 200...which isn't the case.

The x2 is downclocked, and two GPU's don't run 100% on those cards. It's another reason why dual GPU = Fail. They have to downclock them to keep them in sync (which is only a cover for the microstuttering), and to control the heat.

[fornowagain]

I am getting the number from the reviews...

The reviews are usually quite clear that it's system power. Read them again.

.if it drew less that 400w, the a 4870 would draw less than 200...which isn't the case.

Oh yes it is. 4870 TDP is 160W, so uses even less 140-150W.

http://techreport.com/articles.x/14990/3

The bigger cooler and dual six-pin power connections are necessary given the 4870's 160W TDP.

We measured total system power consumption at the wall socket using an Extech power analyzer model 380803. The monitor was plugged into a separate outlet, so its power draw was not part of our measurement. The cards were plugged into a motherboard on an open test bench.

[DavidNJ]

I stand corrected.

[rally9x]

The reviews are usually quite clear that it's system power. Read them again.

Oh yes it is. 4870 TDP is 160W, so uses even less 140-150W.

http://techreport.com/articles.x/14990/3

The 4870 X2 has at least one 8-pin though...so if they got that wrong...

[fornowagain]

The 4870 X2 has at least one 8-pin though...so if they got that wrong...

75w PCI-e slot
75w PCI-e 6pin
150w PCI-e 8pin

= 300w