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Can my 500w psu support 2 6850 gpus? - Page 2

post #11 of 16
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Quote:
Originally Posted by Matt-Matt View Post

That's a point, but I'd still suggest a 7950 over 2x 6850's if the OP can afford it. I'd be a bit wary running two with a 2500k overclocked on that PSU also.
If I were to do that do you have any suggestions for how to sell the used 6850?
post #12 of 16
Quote:
Originally Posted by Matt-Matt View Post

That's a point, but I'd still suggest a 7950 over 2x 6850's if the OP can afford it. I'd be a bit wary running two with a 2500k overclocked on that PSU also.

Yeah adding a overclock to the 2500k would definitely ride that PSU close . You could not take the 2500k to the max but something like I don't know 3,7 on stock volts would probably be OK.

Going with a single 7950 would definitely free up a good 60W allowing a much more aggressive OC on the CPU. However with a 500W PSU I would not try and overclock both the CPU and a 7950. My guess is that's more then that PSU can handle.
    
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post #13 of 16
a gold rated one yes... but yours nope sorry.
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post #14 of 16
Quote:
Originally Posted by char561 View Post

pcpartpicker estimates that my system would use roughly 430watts with 2 6850s. Is that to close to the 500w psu?

Like I said running stock will not be a problem but once you start to overclock the power need starts to climb quite quickly making it possible to overload the PSU if you are not careful.
    
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post #15 of 16
OP a better idea is to sell the HD 6850 and get a HD 7950. 432w on +12v rail is enough for a HD 7950 with 2500k based PC. just stick to stock voltage overclocking. your psu is not good enough for extreme voltage overclocking.
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post #16 of 16
Quote:
Originally Posted by raghu78 View Post

OP a better idea is to sell the HD 6850 and get a HD 7950. 432w on +12v rail is enough for a HD 7950 with 2500k based PC. just stick to stock voltage overclocking. your psu is not good enough for extreme voltage overclocking.

Yes, maybe 4GHz just for the factor of having 4. You won't be pushing anything like 4.8-5GHz or so.
Quote:
Originally Posted by Bit_reaper View Post

Yeah adding a overclock to the 2500k would definitely ride that PSU close . You could not take the 2500k to the max but something like I don't know 3,7 on stock volts would probably be OK.
Going with a single 7950 would definitely free up a good 60W allowing a much more aggressive OC on the CPU. However with a 500W PSU I would not try and overclock both the CPU and a 7950. My guess is that's more then that PSU can handle.

I'd overclock the 7950 first, simply because it matters more for games and you get a better overall benefit.
Quote:
Originally Posted by char561 View Post

If I were to do that do you have any suggestions for how to sell the used 6850?

eBay or here (That's if you have a good account), sell it to a friend for their system or sell it locally I guess, eBay will net the most money though as people value older hardware on there for their Crossfire/SLI/Older sockets and RAM.
 
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