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It looks like that GT206 (55nm) is 50% more efficient than GT200 (65nm). This were great for a little die-shrink.

At 650/1500 MHz the GT200 consumes 266 watts, while GT206 uses around 170 watts.
By the way: These are probably the clock frequencys of GTX 290.

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Seems alright I guess.
 

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Quote:


Originally Posted by Keatonus
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since when does 266-->170=50% more efficiency?

either way, good job nvidia! hope you'll be able to SLI 55nm with 65nm.

They calculated it backwards from 170 to 266. 170 * 1.5 = 255. Whereas 266 * 0.5 = 133 They just suck at math.
 

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VR-Zone copies from Theo Valich copies from _____ (bzzt, shat hits the fan)
 

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Originally Posted by tehpwnerofn00bs
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They calculated it backwards from 170 to 266. 170 * 1.5 = 255. Whereas 266 * 0.5 = 133 They just suck at math.


They calculated it right. 260 / 1,5 = 173.
Same way you calculate cash discounts as an example.
 

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well look at 2900XT to 3870 they decreed the power consumption by a lot and the performance was even a little better
 

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well... i dunno about anyone else, but what core is nvidia on now? it seems that since ATI's R770 hit the ground at a run, Nvidia's got umpteen variations of its g200...
 

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Wait, is this where I'm supposed to get mad that I just bought a GTX 280 yesterday?
 

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I doubt this. IIRC Gt206 is about the size of G80 if not a little smaller. It is still rather big. How is 65nm to 55nm gonna cut power by that much?

EDIT: What was the 8800 Ultra power consumption?
 

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Quote:


It looks like that GT206 (55nm) is 50% more efficient than GT200 (65nm). This were great for a little die-shrink.

"This were great"? I don't think math is the only thing they suck at.
 

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Originally Posted by A Russian :D
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well look at 2900XT to 3870 they decreed the power consumption by a lot and the performance was even a little better

That was from 80nm to 55nm which is a much bigger jump then 65nm to 55nm.
 

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Originally Posted by Somenoob
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I doubt this. IIRC Gt206 is about the size of G80 if not a little smaller. It is still rather big. How is 65nm to 55nm gonna cut power by that much?

EDIT: What was the 8800 Ultra power consumption?

Well, it is possible, but I would not necessarily attribute all of this to the die shrink only. Maybe NV improved something else in their GPU. That would also explain why it took them so damn long to move GT200 to 55nm.
 

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Originally Posted by dejanh
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Well, it is possible, but I would not necessarily attribute all of this to the due shrink only. Maybe NV improved something else in their GPU. That would also explain why it took them so damn long to move GT200 to 55nm.

Maybe a decrease in core voltage? If this is true than its rather impressive to say the least.
 

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amd/ati is doing to nvidia what intel did to it.

i think amd is on a role, i just read that their new processors are to hit 6ghz from overclock.
 

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Sample A - 100W
Sample B - 200W

-- Sample A is 100% more efficient than Sample B.

If that's hard to understand, then reverse it:

-- Sample B is 100% hungrier than Sample A.

Sample C - 300W

-- Sample A is 200% more efficient than Sample C.
-- Sample C is 200% hungrier than Sample A.

-- Sample B is 50% more efficient than Sample C.
-- Sample C is 50% hungrier than Sample B.

In terms of cost?

£100, £200, £300.

"50% off" of £200 = £100, but £200 is 100% larger than £100.
"1/3 off" of £300 = £200, but £300 is 50% larger than £200.

"More efficient" makes it all relative as opposed to absolute.
 
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