The Test and Power

For our test setup, we are using two different 2x x16 ASUS boards: one based on NVIDIA and the other ATI core logic. For all tests with NVIDIA GPUs we used the NVIDIA motherboard, and for all tests with ATI GPUs we employed the ATI based motherboard. All power tests were performed using the same motherboard (the RD580 board).

In an attempt to keep everything readable and manageable, we have split up the high end and mid range comparisons. Our high end parts will be compared at 1280x1024, 1600x1200, 1920x1440, and 2048x1536. The mid range comparison will look at 1024x768, 1280x1024, and 1600x1200. All SLI and CrossFire tests will be included with the high end data.

Test Setup:
ASUS A8N32 NVIDIA nForce 4 X16 SLI Motherboard
ASUS A8R32 ATI RD580 Motherboard
AMD Athlon 64 FX-57
2GB OCZ 2.5:3:3:8 DDR400 RAM
160GB Seagate 7200.7 Hard Drive
600W OCZ PowerStream PSU

Drivers:
NVIDIA ForceWare 84.17 (Beta)
ATI Catalyst 6.2

For power consumption, we once again take a look at the power draw of the system at the wall using our trusty Kill-A-Watt. Power load was measured while running the 3dmark06 feature tests as they tend to provide something near a worst case power load. What we see in games is usually a handful of watts lower than this. For idle power, we don't see that much difference between the high end cards, and the 7900 GT is similar in power to the 6800 GS. The 7600 GT seems to be on par with the X1600 XT for idle power.

Idle Power

When it comes to load, the new NVIDIA parts simply clean up. The performance per watt leader in this contest is hands down NVIDIA. The 7600 GT and 7900 GT both come in at a lower power than the 6800 GS and the 7900 GTX pulls the same wattage as the much lower clocked 7800 GTX.

Load Power

The Competition 7900 GT: Just Another 7800 GTX?
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  • 5150Joker - Thursday, March 9, 2006 - link

    This article didn't state which drivers were used either - you'd think after having the cards for a few weeks your editors wouldn't have such obvious oversights. Reply
  • Cygni - Friday, March 10, 2006 - link

    quote:

    you'd think after having the cards for a few weeks your editors wouldn't have such obvious oversights.

    Ya, cause you paid good money to read this review!
    Reply
  • Griswold - Friday, March 10, 2006 - link

    That one is getting pretty old, its not really an excuse for a site with such high standards.

    Besides that, the ads on this page cost my bandwith. ;)
    Reply
  • DerekWilson - Thursday, March 9, 2006 - link

    I've updated the article with drivers used. I appologize for the omission.

    I absolutely do not mean this as an excuse -- drivers should not have been omitted no matter what the case -- but we have had the cards for less than a week. Again, not an excuse, just correcting your assumption.
    Reply
  • dab - Thursday, March 9, 2006 - link

    So will EVGA send me a 7900gt in the step up program to replace my 6800GS? Reply
  • allometry - Thursday, March 9, 2006 - link

    Is there any word as to when these cards will hit stores? Reply
  • DerekWilson - Thursday, March 9, 2006 - link

    check now :-) Reply
  • allometry - Thursday, March 9, 2006 - link

    Right on! I didn't see any posts for the card earlier, so I figure there might be a week delay.

    Too bad NewEgg already lost it's stock on the eVGA 7900GT's :(
    Reply
  • inthell - Thursday, March 9, 2006 - link

    so NEWEGG shows some of the XFX and EVGA cards with a 256bit mem interface? Reply
  • inthell - Thursday, March 9, 2006 - link

    why would anyone buy the 128bit version and how come anand didnt test or say anything abou this :confused: Reply

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