PSU needed to run 2x5970's and overheating problems ?

Flanno · 23 Nov 2009 at 15:58

Would a corsair hx1000 cut it ?

Also, the Rampage II places the 1st 2 gpu's right beside each other with not even a mm to spare. Could this cause potential throttling with a pair of 5970's ? I know at the moment with 2x5870's, my 2nd 5870 runs 10 degrees cooler as a result of the gpu placing, and putting a gpu in the 3rd pci-e slot is not an option as it's on the edge of the motherboard and you need an 8th pci slot on your case to accomodate a dual cooler.

ejr22 · 23 Nov 2009 at 16:00

Don't be greedy.

Buy 1 and get a decent SSD instead.

RavenXXX2 · 23 Nov 2009 at 16:07

Corsair should do the job, the cards have ports on the rear, if you can get some cool air directed in them, that should somewhat compensate for the lack of air the top card gets when in xfire.

95thrifles · 23 Nov 2009 at 16:09

You're running one 24" monitor, one 5970 is overkill, let alone two, you dont need two unless youre running three 30" monitors in eyefinity

rubin1961 · 23 Nov 2009 at 16:18

5970 is plenty,i run a 30" at 2560x1600 and it smashes through games

kmufc77 · 23 Nov 2009 at 16:20

why would you want 2x5970's? overkill springs to mind

tdream · 23 Nov 2009 at 16:25

so you can do this

arc@css · 23 Nov 2009 at 16:27

Some results did surprisingly offer more performance with the addition of the fourth gpu than I expected.

DeadMan · 23 Nov 2009 at 16:41

2x5970's stock should be okay on a 1k PSU

Overclocking would change that rather quickly though.

tibbsey · 23 Nov 2009 at 16:41

What games can't you play with your 2x 5870s on your single 24" monitor?

HEADRAT · 23 Nov 2009 at 17:11

Solitaire

DeadMan · 23 Nov 2009 at 17:42

Bear in mind that when the 5970 hits 91c it will throttle the gpu to 550mhz from what ever it was previously.

This makes me think, 2 of them close together stock cooling = bad idea.

tmaxxthomson · 23 Nov 2009 at 17:54

wow. those results are spectacular!! makes me feel good to own 2x 5870's now seeing that

Flanno · 23 Nov 2009 at 19:34

Thanks to those who pointed out I will need a new screen and what I have now is sufficient. I realise that

Since myself and a mate of mine built pc's about 8 weeks ago we have become addicts once again and want more. Didn't think it would happen and could fall off the wagon after a hiatus of almost 2 years

Of course, my next upgrade isn't going to happen until the end of April next year as that is when I will have a significant amount of cash. But it's good to plan ahead.

I was just wondering about the 1kw psu and if it will handle quadfire. Some people have said it would. I looked into a build on youtube and 1 guy actually ran 4x5870's on the Asus supercomputer board and ran into psu issues with an older toughpower 1500w, which is why he updated to the equivalent wattage strider with 30amps across each rail. I assume the toughpower only having 20amps on 2 of the 4 12v rails was the cause of his shutdowns when running 4x5870's. The HX1000 was 2x40amp rails so hopefully would be enough for 2x5970's.

Also someone pointed out about the proximity of the 2 5970's on the Rampage could be an issue which is why I regret not going for the P6T Deluxe which more optimal spacing. Right now with 2x5870's, there is a 10 degree delta on the bottom card, so I'd imagine it would be more pronounced with the 5970's. An Asus supercomputer X57 or EVGA 4 way sli board would sort out that though.

marc512 · 23 Nov 2009 at 19:59

.........i would do ANYTHING to get £500 for 1 5970...and me being a "want the best" person i wouldnt bother spending £500 on another 5970. Id probly buy 2 30inch monitors and max every game + eye infinity.

Ill be really ****ed off if somebody just went and bought 4 5970s just for the hell of it and had a 19inch standard monitor.

Toastor · 23 Nov 2009 at 20:03

Good luck to you Flanno. I have trouble even justifying the cost of a single 5770 to my wife

Flanno · 23 Nov 2009 at 20:07

Thanks! Luckily no partner to justify stuff to

However it did take me about 6 months to get the cash together to build current build. I'm now trying to enjoy it. However temptations like watercooling, corsair obsidian, 5970's, more screens, Fermi, SSD's etc.. are going to get the better of me in the next 6 months I reckon

clone · 23 Nov 2009 at 20:09

Flanno said:
Thanks! Luckily no partner to justify stuff to However it did take me about 6 months to get the cash together to build current build. I'm now trying to enjoy it. However temptations like watercooling, corsair obsidian, 5970's, more screens, Fermi, SSD's etc.. are going to get the better of me in the next 6 months I reckon

Good man its your cash

PrincessFrosty · 23 Nov 2009 at 21:31

You absolutely do not need 2 5970s for 1920x1200, in fact a single 5970 is overkill for that resolution.

2 right next to each other is going to have soem problems, you'd probably need watercooling on them.

You could spend that additional £500+ on some really neat toys like SSDs or some really nice perhipherals or just more games.

Toastor · 23 Nov 2009 at 21:48

Flanno said:
Thanks! Luckily no partner to justify stuff to However it did take me about 6 months to get the cash together to build current build. I'm now trying to enjoy it. However temptations like watercooling, corsair obsidian, 5970's, more screens, Fermi, SSD's etc.. are going to get the better of me in the next 6 months I reckon

Sounds to me like you worship at the altar of tech!

Given me an idea for a new benchmark though: Time taken to grill a cheese toastie between a pair of graphics cards. :cool: