NVIDIA's GeForce 7800 GTX Hits The Ground Running
by Derek Wilson on June 22, 2005 9:00 AM EST- Posted in
- GPUs
The Test, Card, and High Resolution
Before we get down to the performance tests, let's look at our test system.ASUS nForce 4 A8N-SLI Deluxe Motherboard
AMD FX-55
1GB DDR3200 2:2:2:8
120GB Seagate 7200.7 HD
OCZ PowerStream 600W PSU
The card this time around is a single slot solution. With the process shrink to 110nm an insignificant increase in clock speed, NVIDIA has produced a chip that runs at lower power and temperature than NV40. At the same time, the increase in parallelism has served to boost performance.
Layout of the card is relatively similar to the 6800 Ultra, but there are a few differences. We've still got 2 DVI slots (both single link), but the solder point for the silicon image TMDS chip for dual-link DVI is either missing or moved. We will certainly be interested in seeing a workstation version of this part.
Here's a quick recap and summary of the G70 and GeForce 7800 GTX:
302M transistors
Over 300mm^2
110 nm TSMC fabrication process
Single Slot HSF
430MHz Core clock
600MHz GDDR3 256MB/256-bit
8 vertex shader units
24 pixel shader units
16 ROP units
2 DVI and one HDTV / VIVO connection
PCI- Express (demand for an AGP part will be determined and addressed if necessary)
~100W Power
350W Power Supply Recommended (500W for SLI)
So what is all the fuss about? Here's a look at the NVIDIA GeForce 7800 GTX card:
Why high res?
It is important to remember that we tested at resolutions of 1600x1200 and higher because lower resolutions are CPU limited without AA and AF enabled. In many cases the GeForce 7800 GTX don't show much difference in performance with and without antialiasing at lower resolutions. This kind of data doesn't give us much useful information about the card. We have truly reached another plateau in graphics performance with this part: pushing the card to the max is all but necessary in order to understand its performance characteristics.
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Regs - Wednesday, June 22, 2005 - link
Yikes @ the graphs lol.I just came close to pushing the button to order one of these but then I said...what games can't play on a 6800GT at 16x12 res? There is none. Far Cry was the only game that comes close to doing it.
Bravo to Nvidia, his and boo @ lagging game developers.
bob661 - Wednesday, June 22, 2005 - link
#19Are you new to this market or do you have a short memory? Don't you remember that the initial 6800 Ultra's cost around $700-800? I sure as hell do. Why is everyone complaining about pricing? These are premium video cards and you will pay a premium price to buy them.
Barneyk - Wednesday, June 22, 2005 - link
Yeah, not a single comment on any of the benchmarks, what is up with that?There were alot of wierd scenarios there, why is there NO performance increase in SLI some of the time?
And why is 6800Ultra SLI faster then 7800GTX SLI??
Alot of wierd stuff, and not a singel comment or analysis about it, I always read most new tests here on AT first becasue its usually the best, but this review was a double boogey to say the least...
Dukemaster - Wednesday, June 22, 2005 - link
@21: The score of the X850XT PE in Wolfenstein still looks messed up to me...shabby - Wednesday, June 22, 2005 - link
Ya some of the scores dont make much sense, 7800 sli loosing to a single 7800?yacoub - Wednesday, June 22, 2005 - link
Hey, looks great! $350 and you've got a buyer here!Lifted - Wednesday, June 22, 2005 - link
Guys, they simply reversed the 6800 Ultra SLI and 7800 GTX SLI in all of the 1600 x 1200 - 4x AA graphs.Now everthing is kosher again.
Johnmcl7 - Wednesday, June 22, 2005 - link
To 18 - I have to admit, I didn't bother looking closely at them, seeing the X850XT supposedly beating all the other cards by such a margin at those resolutions showed they were completely screwed up! I didn't notice the performance increase as you go up the resolution, maybe it's something I missed on my own X850XT? ;) I wish...that would be a neat feature, your performance increases as your resolution increases.I agree it needs pulled down and checked, not to be harsh on AT but this isn't the first time the bar graphs have been wrong - I would rather wait for a review that has been properly finished and checked rather than read a rushed one, as it stands it's no use to me because I have no idea if any of the performance figures are genuine.
John
RyDogg1 - Wednesday, June 22, 2005 - link
Wow, who exactly is paying for these video cards to warrant the pricing?Lonyo - Wednesday, June 22, 2005 - link
To #14, the X850XT performance INCREASED by 33% from 1600x1200 to 2048x1536 according to the grahics, so to me that just screams BULLSH!T.I think the review needs taking down, editing, and then being put up again.
Or fixed VERY quickly.
AT IMO has let people down a bit this time round, not the usual standard.