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[LR] NVIDIA GeForce GTX 670 Pictures & Benchmarks Leaked - Page 4

post #31 of 172
Quote:
Originally Posted by armourcore9brker View Post

So 2.5x performance for an over 3x power cost?
Follows my original point that the 7750 is more power efficient for the performance than the GTX 670 is.
OK... I see your logic. Getting rid of an SMX AND very likely decreasing core clocks increases power consumption over a 680... I see what you did there.
post #32 of 172
Quote:
Originally Posted by 3930K View Post

Kepler is ~30% more efficient than GCN.
No it's not. GK104 is about 7-8% more efficient than Tahiti XT, and Tahiti XT is hardly an efficient chip compared to Pitcairn XT.
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_690/29.html
Read for yourself, HD 7870 is almost 25% more efficient than GTX 680
Quote:
Originally Posted by 3930K View Post

The TDP of this card is up to 225W, as shown by 2x dual pins. This shows that the card''s maximum power is 150-180 W.
TDP isn't determined by PCIe power-connectors.
You're pulling that power consumption out of (very) thin air.
Quote:
Originally Posted by 3930K View Post

Note how I added 150 W. as this has Turbo Boost it'd still be reasonable to add an extra pin to be able Turbo Boost nicely.
A 6-pin PCIe-connector can easily supply more than 75W, even 150W isn't really a stretch on a 6-pin. Your logic on Turbo Boost needing more power is also quite mindboggling, as the Boost is there so that the card can Boost when power consumption is lower than average.
Quote:
Originally Posted by 3930K View Post

This is 2-2.25x the 7750's TDP for 3.5-4x mprovement in performance. I personally think that's reasonable.
I think you need your eyes checked, this card will definitely not be 55-100% more efficient than a 7770.
That range in efficiency you're predicting (between 55% and 100% improvement) is also very unspecific by the way.
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post #33 of 172
^7-8%? GK104 is better than Tahiti XT, while using 25% less power?
post #34 of 172
Quote:
Originally Posted by Arni90 View Post

No it's not. GK104 is about 7-8% more efficient than Tahiti XT, and Tahiti XT is hardly an efficient chip compared to Pitcairn XT.
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_690/29.html

AMD seems to have hit the jackpot with the 3-3-4 configuration. While Tahiti was good, GK104 was better. Pitcairn should be much more competitive against the midrange Kepler offerings, but only time will tell.
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post #35 of 172
That PCB is freakishly small. Wow. It almost looks fake. I wouldn't be comfortable paying ~$400 for such a cheap looking card. lol.
Edited by ultralord910 - 5/4/12 at 12:05pm
post #36 of 172
Quote:
Originally Posted by Homeles View Post

AMD seems to have hit the jackpot with the 3-3-4 configuration. While Tahiti was good, GK104 was better. Pitcairn should be much more competitive against the midrange Kepler offerings, but only time will tell.

3-3-4?

What do you mean?
post #37 of 172
Quote:
Originally Posted by archer23 View Post

Wow, that PCB size is unbelievably small for a card with that perf.

the 6 pins are in the center of the 670 and the rest of the picture has been cutoff that image is only half of the card
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I should game.
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post #38 of 172
Quote:
Originally Posted by 3930K View Post

^7-8%? GK104 is better than Tahiti XT, while using 25% less power?
All right, I'll pull the pictures right out of the link since you have problems looking things up yourself: Warning: Spoiler! (Click to show)
NfCzSMK.gif
8dcsZdY.gif

See how the GTX 680 isn't really that much more efficient at 1920x1080 and less efficient at 2560x1600?
Now, where is your source on that 25% less power while better performance?
Please tell me you are not comparing the GTX 680s average power consumption with the 7970s Powertune limit?
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post #39 of 172
Quote:
Originally Posted by 3930K View Post

3-3-4?
What do you mean?
Probably referring to this: http://www.anandtech.com/show/5541/amd-radeon-hd-7750-radeon-hd-7770-ghz-edition-review
_zTYr7r.jpg
(Image stolen from Anandtech)
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post #40 of 172
When it's this close, does it really matter that much?
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