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post #11 of 19
I would recommend a 650 power supply for those cards in cf. If you going to overclock maybe 750 -800 would be a better choice. Just my opinion !!
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post #12 of 19
Thread Starter 
Yea, I got an unlucky chip with my 955BE, that and my mobo is kinda crappy for OC. highest OC I have hit was 3.8Ghz but had to bump the snot outta the vcore, so I use it at stock clocks. my chips likes lotsa Vcore... Themps with my S/A where AMAZING while oc'ing though. Temps where in the 40-45c range at 4.0 attemps, but i couldnt get it stable...
If the sandy bridge will oc easy to close to 4.5-5 without hurting it I'll give it a shot
Thanks for all teh adice guys! keep it coming if there's anything else I need to know about this new build
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post #13 of 19
Thread Starter 
Quote:
Originally Posted by MIKEVALL View Post
I would recommend a 650 power supply for those cards in cf. If you going to overclock maybe 750 -800 would be a better choice. Just my opinion !!
Accroding to TwoCables my current 620W Eco Neo will be more than enough for OC and CF 6950's. The PSU is rated for 620 Continuos watts, the peak wattage is much higher. I also like the looks of the Sabertooth board but looks mean nothing to me in this build...no sidewindow in my rig as of yet

He gave me this clicky to support his claims. I trust him
http://www.guru3d.com/article/radeon...firex-review/4
http://www.guru3d.com/article/radeon...irex-review/14
Edited by KhaoticKomputing - 8/18/11 at 1:27am
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post #14 of 19
TwoCables is right. That PSU will do ya good.
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post #15 of 19
Quote:
Originally Posted by KhaoticKomputing View Post
Accroding to TwoCables my current 620W Eco Neo will be more than enough for OC and CF 6950's. The PSU is rated for 620 Continuos watts, the peak wattage is much higher. I also like the looks of the Sabertooth board but looks mean nothing to me in this build...no sidewindow in my rig as of yet

He gave me this clicky to support his claims. I trust him
http://www.guru3d.com/article/radeon...firex-review/4
http://www.guru3d.com/article/radeon...irex-review/14
Im said it was my opinion.
Here is the recomendation from the link u posted.

Radeon HD 6950

On your average system the card requires you to have a 500 Watt power supply unit.
Radeon HD 6950 in CrossfireX

A second card requires you to add another ~160 Watts. You need a 650+ Watt power supply unit and if you use it in a high-end system a 800+ to a KiloWatt is recommended especially if you plan on any overclocking.
For each other card that you add, just add another 160 Watts and 15A on the 12V rails as a safety margin. What would happen if your PSU can't cope with the load? Here are some pointers:

bad 3D performance
crashing games
spontaneous reset or imminent shutdown of the PC
freezing during gameplay
PSU overload can cause it to break down



I personally dont care what you put in there , you asked for advice. put a 300 watt if you want
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post #16 of 19
Thread Starter 
I still dont get why you say a 650 peak watt power supply would be a better option than my 620 watt continous watt. would you mind educating a noob? Int he guru3d.com tests they only pulled 473w with xfire cards and a similar build to what im planning. not trying to say your wrong but would like the education
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post #17 of 19
Quote:
Originally Posted by MIKEVALL View Post
if you use it in a high-end system a 800+ to a KiloWatt is recommended especially if you plan on any overclocking.
You're crazy man, he's using 6950s here, not 6990s. There's no way a rig with 2 6950s would need a 1kw psu.
I'm guessing you're one of the many people that way over kills on psu wattage judging by your post and the fact that you have a 1200w psu for a single 580.
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post #18 of 19
Thread Starter 
Quote:
Originally Posted by HWI View Post
I'm guessing you're one of the many people that way over kills on psu wattage judging by your post and the fact that you have a 1200w psu for a single 580.
1200w!?!? I could never dream of using all that wattage, unless I run my moms hybrid car off it lol.
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post #19 of 19
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Not that this should matter but the noob in me must know. Will the fact that I plan to run 3 24 inch 1080p moniters with this system(with only one card at first) matter? I know the card can handle it, but dose using Eyefinity cause a higher power req with the card?
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