Rumours are flying everywhere with regards to Fermi's power draw, and I've seen them range from 210W to 300W. There seems a general consensus that it will be fairly high at any rate, but there's no real information on its performance. We'll all just have to wait and see.
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Originally posted by energyman View Postone thing is clear - Fermi is doing tesselation in Shaders. Ati has a tesselator.
So when a game is shader have and wants to do tesselation, Fermi is screwed.
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Originally posted by daedaluz View PostDon't know how valid this is, but you really shouldn't get your hopes too high regarding Fermi:
A little earlier this month, NVIDIA tweeted that it would formally unveil the GeForce GTX 400 series graphics cards, NVIDIA's DirectX 11 generation GPUs, at the PAX East gaming event in Boston (MA), United States, on the 26th of March. That's a little under a month's time from now. In its run up, so...
"Sources tell DonanimHaber that the GeForce GTX 470 performs somewhere between the ATI Radeon HD 5850 and Radeon HD 5870. This part is said to have a power draw of 300W."
That is ridiculous.
(source: techreport.com)
Creepy...
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Originally posted by energyman View Postno, official word is that one shader in each unit is doing tesselation when not doing shader-stuff.
Q: How is NVIDIA approaching the tessellation requirements for DX11 as none of the previous and current generation cards have any hardware specific to this technology?
Jason Paul, Product Manager, GeForce: Fermi has dedicated hardware for tessellation (sorry Rys :-P). We?ll share more details when we introduce Fermi?s graphics architecture shortly!
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The tesselation is done via the "polymorph" engines attached to shader units (and feeding directly into them). While I'm not 100% sure of the details, I think the shader units are still used to handle some extra processing before the final rasterising step.
The end result is some good parallel geometry magic, but it might suffer a little if the scene is more concerned with pixel/fragment shaders (pipeline stalls would really hit it hard here - the usual parallel programming problems).
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Power hog?
...On the side of some retail boxed graphics cards it states that a minimum 600W or greater power supply (with a minimum +12V current of 42A) is needed for proper operation...
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