NVIDIA GeForce 6800 Ultra: The Next Step Forward
by Derek Wilson on April 14, 2004 8:42 AM EST- Posted in
- GPUs
NV40 Under the Microscope
The NV40 chip itself is massive. Weighing in at a hefty 222 Million transistors, NVIDIA's newest GPU has more than three times the number of transistors as Intel's Northwood P4, and about 33% more transistors than the Pentium 4 EE. This die is droped onto a 40mm x 40mm flipchip BGA package.
NVIDIA doesn't publish their die size information, but we have been able to interpolate a little bit from the data we have available on their process information, and a very useful wafer shot.
As we can see, somewhere around 16 chips fit horizontally on the wafer, while they can squeeze in about 18 chips vertically. We know that NVIDIA uses a 130nm IBM process on 300mm wafers. We also know that the P4 EE is in the neighborhood of 250mm^2 in size. Doing the math indicates that the NV40 GPU is somewhere between 270mm^2 and 305mm^2. It is difficult to get a closer estimate because we don't know how much space is between each chip on the wafer (which also makes it hard to estimate waste per wafer).
Since we don't have information on yields either, it's hard to say how well NVIDIA will be making out on this GPU. Increasing the transistor count and die size will lower yields, and the retail value of cards based on NV40 will have the same price at release as when NV38 was released.
Of course, even if they don't end up making as much money as they want off of this card, throwing down the gauntlet and pushing everything as hard as they can will be worth it. After the GeForce FX series of cards failed to measure up to the hype (and the competition), NVIDIA has needed something to reestablish their position as performance leader in the industry. This industry can be brutal, and falling short twice is well nigh a death sentence.
But, all those transistors on such a big die must draw a lot of power right? Just how much juice do we need to feed this beast ...
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mkruer - Wednesday, April 14, 2004 - link
Well I hope this card is on par with ATi's or visa versa. ATi is planning to see their best at $500 pop and Nvidia is selling their at $400. How long to you think ATi is going to see their card for that price if the performance is virtually identical. Finally in the terms of the Power. Makes me wonder why PCI-Ex doesn’t include enough voltage from the socket? VPU's are getting to the point that they are just as powerful and complex as their CPU brethren, and will require the same power requirements as the CPU. Some one didn’t do their homework I guess. Well hears hoping that it will be in the next specification.quikah - Wednesday, April 14, 2004 - link
Can you post some screen shots of Far Cry? The demo at the launch event was pretty striking so I am wondering if PS 3 were actually enabled since you didn't see any difference.Novaoblivion - Wednesday, April 14, 2004 - link
Wow nice looking card I just hope the new ATI doesnt kick its ass lolRudee - Wednesday, April 14, 2004 - link
When you factor in the upgrade price of a power supply and a top of the line CPU, this is going to be one heck of an expensive gaming experience. People will be wise to wait for ATI's newest flagship before they make any purchase decisions.Pete - Wednesday, April 14, 2004 - link
Nice review, Derek. Some impressive performance, but now I'm expecting more from ATi in both performance (due to higher clockspeed) and IQ (I'm curious if ATi improved their AF while nV dropped to around ATi's current level). I also have a sneaking suspicion nV may clock the 6800U higher at launch, but maybe they're just giving themselves room for 6850U and beyond (to scale with faster memory). But a $300 12-pipe 128MB 6800 should prove interesting competition to a ~$300 256MB 9800XT.The editor in me can't refrain from offering two corrections: I'm pretty sure you meant to say Jen Hsun (not "Jensen") and well nigh (not "neigh").
Mithan - Wednesday, April 14, 2004 - link
Looks like a fantastic card, however I will wait for the ATI numbers first :)PS:
Thanks for including the 9700 Pro. I own that and it was nice to see the difference.
dawurz - Wednesday, April 14, 2004 - link
Derek, could you post the monitor you used (halo at 2048 rez), and any comments on the look of things at that monstrous a resolution?Thanks.
rainypickles - Wednesday, April 14, 2004 - link
does the size and the power requirement basically rule out using this beast of a card in a SFF machine?Damarr - Wednesday, April 14, 2004 - link
It was nice to see the 9700 Pro included in the benchmarks. Hopefully we'll see the same with the X800 Pro and XT so there can be a side-by-side comparison (should make picking a new card easier for 9700 Pro owners like myself :) ).DerekWilson - Wednesday, April 14, 2004 - link
We are planning on testing the actual power draw, but until then, NVIDIA is the one that said we needed to go with a 480W PS ... even making that suggestion limits their target demographic.Though, it could simply be a limitation of the engineering sample we were all given... We'll just have to wait an see.