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R600 Generation Power Requirements - Page 2

post #11 of 21
As far I know, the 8800GTX draws about 150W or so... a bit more when overclocked. Thus, you'll need like 25A for those cards alone on the 12V rails.

The 850W Silverstone is actually the PSU the legendary K|ngP|n used when he hit 23,000 in 3DMark06 (yes oh-six) with an X6800 and SLI 8800GTX's (overclocked, esp. that X6800). Thus, that PSU has proven to be enough for that set up, especially for us mere mortals
    
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post #12 of 21
Thread Starter 
Well then why would Chozart tell me my PSU is more than powerful enough? He is always right! 18A is an @$$ load man, that can't be correct...
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post #13 of 21
Quote:
Originally Posted by stargate125645 View Post
Well then why would Chozart tell me my PSU is more than powerful enough? He is always right! 18A is an @$$ load man, that can't be correct...
i may be wrong. i'm never sure about anything i say.

and here's the list of 8800gtx recommended PSUs.
http://www.slizone.com/object/slizon..._powersupplies
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post #14 of 21
the wiki says Power consumption range from 130W to 225W WIKI READ ME I COMMAND YOU
(hint: this is lower than an 8800GTX)
post #15 of 21
Quote:
Originally Posted by noshibby View Post
the wiki says Power consumption range from 130W to 225W WIKI READ ME I COMMAND YOU
(hint: this is lower than an 8800GTX)
225w=18a (right?)
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post #16 of 21
Thread Starter 
What do you guys think of this PSU? It has a lifetime warranty...
http://www.newegg.com/product/produc...82E16817702005

225W / 12V = 18.75A

So if Wikipedia is correct, then you were correct. But still, that's a hell of a lot... Seems like it has to be wrong.
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post #17 of 21
nVidia recommends a 450W PSU with a 12V rail of 30A for a single 8800GTX and an 800W PSU (not sure about amps) for SLI.

There is no way that the card alone draws 18A - 20A. 15A is my estimate (and I think a bit high at it).

Do realize that the PCI-E bus is rated at 75W, and that the connectors are also rated at 75W EACH. Thus, the limit is 225W (18.75A) that can be delivered to the card. I'd assume that nVidia wants to stay safely below that limit to avoid trouble.

Finally, I have seen a review in which a COMPLETE rig with an 8800GTX draws 321W under load, which is just a bit more than a X1950XTX (otherwise same rig).

Edit: finally finally: note that anyone can put stuff in a wiki. The initial rumors were indeed over 200W per card, an estimate that has proven incorrect.

Check here:
http://www.dailytech.com/article.aspx?newsid=4812

Edit: Finally, to finally give a final comment: That BFG tech looks nice on paper.. however, not sure how the quality is. Warranty is good of course, but does it cover your motherboard if it blows up? My personal pick is either the 850W Silverstone, or the 1KW PC Power & Cooling (single rail, which is better for Intel rigs).

Having that said, there is also a 750W PC Power & Cooling Silencer with four PCI-E x16 connectors. That'll do the job also. http://www.pcpower.com/products/view....php?show=S75Q
    
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post #18 of 21
Thread Starter 
Oh well, my PSU won't depreciate that much, so if I do need to sell it and buy a new one I can do that when I get 2 DX10 cards, no? 1 DX10 card will probably be able to run the newest DX10 games better than the best DX9 card can run the newest DX9 games now anyway, as I doubt game manufacturers will catch up with the technology right away.
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post #19 of 21
Exactly. A single 8800GTX is on par, or even better, than the current best SLI/Crossfire set ups (12k 3DMark06).
    
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post #20 of 21
Chozart,

I dont understand why you linked the Silverstone and say not to use the Galaxie? The Silverstone has 4 rails at 18a a piece so I dont see how that could make much of a difference over 1a plus the galaxie then has another rail?

pink
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