News - Leaked slides expose NVIDIA GeForce GTX 480 "Fermi" GPU

[Domestic_Ginger]

Hopefully teh power draw would be split equally between the two rails. I would imagine a 20-22W rail would power it on its own. I think they are setting it high to compensate for the rest of peoples systems and safe guarding against a potential fire with a borderline system! Due to PCI limitations it is my understanding that this thing will not be able to draw more than 300W due to legal obligations. I do not think NV will start flaunting that.

My Corsair 550 has 41A on the 12V rail. I would be happy to run it on mine; whether it then turns my case into a baking inferno is another matter (oh and the price and availabilty).

[kalniel]

Hopefully teh power draw would be split equally between the two rails.

I'm not sure how much these things are gated - I would expect it just sucks power from which ever rail provides it the most freely (least resistance).

[A4i]

42A is utter bull, as far as the GPU is concerned. Perhaps if you put one with a top end CPU and "kitchen sink" motherboard, your entire system might need 42A across the 12V rails, but the GPU itself doesn't.

According to Joule's law and it's relation to Ohm's law for direct current I=P/V. So I=25A, when P=300Watt and V=12V. Basically it means, that you will need 40A on PSU's 12V Rail for all system, not just dedicated to GPU's PCI-E power connectors.

[scaryjim]

According to Joule's law and it's relation to Ohm's law for direct current I=P/V. So I=25A, when P=300Watt and V=12V.

Thank you, I'd completely forgotten my GCSE physics

[mercyground]

Not to take the fun away from here but...

http://hardforum.com/showthread.php?t=1504030

You should see the hatred flying in that thread. Serious case of more money than sense over there.

Couple of bits i picked up so far that Kyle posted (HardOCP's owner) :

There is going to be a B1 revision of Fermi due to the A revisions being SERIOUSLY screwed.
He's dissapointed so far as all the rumours he's posted have come true. 300w power, lateness, poor performance/power etc.
They are going to hit it with benchmarks once card is out. I'm looking forward to Kyles review of that. He did say he has fire extingusiers on standby. I think it will be telling if Fermi CAN be overclocked or not. My money is on you will void card warrenty AND Mb warrenty as there is no legal way NV can get round the 300W gfx card draw issue. Just something to keep in mind.