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Discussion Starter #1
Ok i'm looking at buying this when the G80 (GTX version) comes out in november. The reviews are good and I don't want to spend nearly 100$ more for the PC&C.<br />
<a href="http://www.newegg.com/product/product.asp?item=N82E16817194008" target="_blank">http://www.newegg.com/product/produc...82E16817194008</a><br />
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Any idea if this is gonna be able to handle SLI Geforce 8800 GTXs? I'm sure the 1000W will be plenty, but this is what i don't understand:<br />
Output [email protected],[email protected],[email protected],[email protected],[email protected],+12 [email protected],[email protected],[email protected],[email protected]<br />
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Can someone with some knowledge of PSUs fill me in and tell me if thats enough to power them? I was told i need [email protected] <img src="/images/smilies/confused.gif" border="0" alt="" title="Confused" class="inlineimg" /><br />
<br />
Thanks
 

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SNERP!!!
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Honestly, with the ranged power use I have been hearing I am guessing no. There were talks of 250W+.
 

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Discussion Starter #3
Thats 500w of power that leaves 500w to power my PC. Processor is lets say 100w, then my fans which isnt probably more than 50w, and i only have 1 raptor and 1 dvd-rw, and my sound card.<br />
<br />
Should have like 200w to spare?
 

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A kilo-watt! haha that will be plenty
 
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Edit:<br />
<br />
Sorry, didn't realize that those rails were designated to a certain area. Looks like it won't be able to run 2 g80's in SLI.
 
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Discussion Starter #6
Thanks guys.
 

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The cards combined will draw 500-600W, so that leave at least 400W for the rest of your system, which should be plenty as long as you arent running a massive RAID array.
 

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SNERP!!!
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Well, let’s say that they use 300W. That's 600W for just video cards. Do you want to overclock them? That's going to take more power. Are you going to OC them & your CPU?<br />
<br />
It just gets a bit tighter than I would personally want <img src="/images/smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" />
 

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<b>Guys, it's NOT ENOUGH</b><br />
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The distribution of the rails on that PSU is very specific. There are five 12V rails, and that's what matters in this case. Each rail is 17A, but the five rails are divided in two groups.<br />
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12V1 and 12V2 are for CPU(s) only. Total max load on those rails is 34A.<br />
12V3, 12V4, and 12V5 are for graphics and everything else. Total max load on those rais is 41A.<br />
<br />
Thus, there is only 41A available for video, hard drives, optical, etc.<br />
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The high-end DX10 cards are rumored to draw up to 250 a piece. A pair would thus draw 500W, which equals 41.67A. Thus, the pair alone already exceeds the max total load on the set of 12V rails that has to power these cards.<br />
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Answer: No, not enough!<br />
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Personally, I would get the most powerful single rail PSU I can get my hand on, which is the <a href="http://www.newegg.com/Product/Product.asp?Item=N82E16817703006" target="_blank">PC Power and Cooling Silencer 750W</a> with a single 12V rail of 60A. Then, I'd get a secondary PSU for the second DX10 card. This <a href="http://www.newegg.com/Product/Product.asp?Item=N82E16817104019" target="_blank">FSP Group (Fortron Source) BoosterX 3, 300W ( Max. 400W ) SLI Graphic PSU</a> should be enough for the second card and will fit in an open 5.25" slot.
 

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I would <i>hope</i> that is enough.
 

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The total power is enough, but the distribution across the rails is insufficient.<br />
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Now, I'd also wait to see if these cards will actually not come with their own power supply <img src="/images/smilies/wink.gif" border="0" alt="" title="Wink" class="inlineimg" />
 
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No they'll be drawing much more power<br />
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the first prototypes that are out had 2 (yes, two) 6 pin PCI-E connectors to handle the enormous power the cards need. Some of the top-end models even come with watercooling as the stock solution <img src="/images/smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" /><br />
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250W is the current estimate, while some estimates are even higher.<br />
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Originally Posted by <strong>Anandtech</strong>

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<div style="font-style:italic">ATI and NVIDIA have been briefing power supply manufacturers in Taiwan recently about what to expect for next year’s R600 and G80 GPUs. Both GPUs will be introduced in late 2006 or early 2007, and while we don’t know the specifications of the new cores we do know that they will be extremely power hungry. The new GPUs will range in power consumption from 130W up to 300W per card. ATI and NVIDIA won't confirm or deny our findings and we are receiving conflicting information as to the exact specifications of these new GPUs, but the one thing is for sure is that the power requirements are steep.</div>

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</div><a href="http://www.anandtech.com/tradeshows/showdoc.aspx?i=2770" target="_blank">http://www.anandtech.com/tradeshows/showdoc.aspx?i=2770</a>
 
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Discussion Starter #14
So basically I should just wait and see what they are going to require...<br />
<br />
I don't want 2 PSUs, and 500$ for the PC&C... Seems like alot.<br />
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Plus if these cards actually do require watercooling...im kinda expecting they don't REQUIRE it, but if they do I have to spend money on watercooling. That would put my new build at nearly 5,300$. Thats insane.
 

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SNERP!!!
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I plan on using my 510W for the CPU & GPU and having another 300W PCP&C server unit for my HD, DVD, & Fans.<br />
<br />
<div style="margin:20px; margin-top:5px; ">
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Originally Posted by <strong>Murlocke</strong>

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<div style="font-style:italic">So basically I should just wait and see what they are going to require...<br />
<br />
I don't want 2 PSUs, and 500$ for the PC&C... Seems like alot.<br />
<br />
Plus if these cards actually do require watercooling...im kinda expecting they don't REQUIRE it, but if they do I have to spend money on watercooling. That would put my new build at nearly 5,300$. Thats insane.</div>

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</div>The leaked pic had a WCing setup on it.
 

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Isn't this getting just crazy? I mean you need seperate psus just for graphics cards? Whats next? At this rate we are gonna need environmental regulations on how much electricity computer parts can require.
 

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<div style="margin:20px; margin-top:5px; ">
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Originally Posted by <strong>Wincet</strong>

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<div style="font-style:italic">Isn't this getting just crazy? I mean you need seperate psus just for graphics cards? Whats next? At this rate we are gonna need environmental regulations on how much electricity computer parts can require.</div>

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</div>Yep...everyone is kinda pissed about it.
 

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Some of the high-end cards will come with a water cooling option.<br />
<br />
And believe me, even the 1KW PC Power & Cooling 1KW is not enough. the dedicated rails for video cards is only 36A, not enough as I calculated before.<br />
<br />
You not even interested in the 300W FSP that fits in an open 5.25 slot? That would work together with the PC Power & Cooling Silencer 750W, and will cost less than $300 total.
 

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One day everyone thinks the PC Power&Cooling 1KW was rediculously too much, and now its not even gonna be enough. What has this world come to? <img src="/images/smilies/weirdsmiley.gif" border="0" alt="" title="Weirdsmiley" class="inlineimg" />
 

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Discussion Starter #20
I think theyll make a 650W external power supply that plugs into the back of the cards, or something along those lines.<br />
<br />
I feel bad for people buying 450$ PSUs and they arnt enough. I don't get what ATI/NVIDIA are doing, they released the "recommended" PSU wattage, but said nothing about the 12v rails.<br />
<br />
There isnt a single PSU on the market that can run these cards in SLI...
 
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