NVIDIA: Beyond G80...

The numbers that surprise me re: G84 aren't "80". More like "32" and ... maybe "128". :)
Actually, the thing that gets me regarding bandwidth isn't really the width. The availability, speed, and pricing of GDDR4 isn't really where I expected it to be. That surprise is only strengthened with the rumors regarding <1ns GDDR3 Ultras.

Nah, if there's a surprise re: 80nm it's the appearance of a 90nm Ultra.

jmho, though

-Dave
 
dnavas said:
That surprise is only strengthened with the rumors regarding <1ns GDDR3 Ultras.

-Dave
Click to expand...

It's not a rumor anymore, it's real.
The Beareyes review of the Ultra had a close-up picture of the PCB with unknown Samsung "BJ08" GDDR3 chips clearly visible.
That's 0.8ns, or 2200MHz.
 
I doubt either IHV is bold enough to reach for 1 teraflop with the refreshes of R600/G80. But if Nvidia does try I expect something like 160 SP's at 2.1Ghz. I don't really see a need to go wide here if you can go high. AMD can get there with an R600 variant with 96 shaders @ ~ 1Ghz.
 
Hmm, didn't notice this posted yet. X-bit labs has a "preview" of GF8800 Ultra up, here: http://www.xbitlabs.com/news/video/display/20070430143103.html

They test simply using an overclocked GF 8800 GTX, but the benchmarks are somewhat lacking since they can't get the GTX to run at the exact clocks of the Ultra. At least they seem to be certain that Ultra will launch with 612 MHz core, 1.5 GHz shaders and 2.16 GHz (effective) memory clock.

As can be expected, the performance improvements aren't really astounding, and with many factory overclocked cards available I'd call the results just plain disappointing.
 
According to the editor of this chinese review, the 8800 Ultra, when OC'ed -stock cooling-, can be as much as 31.5% faster compared to a stock GTX in the same test.
 
INKster said:
According to the editor of this chinese review, the 8800 Ultra, when OC'ed -stock cooling-, can be as much as 31.5% faster compared to a stock GTX in the same test.
Click to expand...
Hmm, looks like AMD should know where to aim XTX... OK, so it'll consume more power, but...

I wanna see that peltier cooler get deployed :LOL:

Jawed
 
INKster said:
According to the editor of this chinese review, the 8800 Ultra, when OC'ed -stock cooling-, can be as much as 31.5% faster compared to a stock GTX in the same test.
Click to expand...

That is true, but an overclocked 8800 Ultra is probably only 10-15% faster than an overclocked 8800 GTX. That would seem ok if the Ultra was released side by side with the 8800 GTX, but when released 6 months later, it just doesn't have the same appeal. And there are already overclocked GTX's on sale at a much lower price than the reported Ultra prices. Hopefully the Ultra street prices will be much lower than the MSRP, but I wouldn't count on it because supply may be limited to the point where the street prices will remain very high.
 
That's just pure speculation on my part. I believe that the Ultra cards will have relatively limited supply for consumers looking to purchase the cards separately from vendors like evga. Dell might be different though, but they charge an arm and a leg to upgrade to the highest end GPU's.
 
jimmyjames123 said:
That is true, but an overclocked 8800 Ultra is probably only 10-15% faster than an overclocked 8800 GTX. That would seem ok if the Ultra was released side by side with the 8800 GTX, but when released 6 months later, it just doesn't have the same appeal. And there are already overclocked GTX's on sale at a much lower price than the reported Ultra prices. Hopefully the Ultra street prices will be much lower than the MSRP, but I wouldn't count on it because supply may be limited to the point where the street prices will remain very high.
Click to expand...

Take a good look at the last few pages of that review.
The author claims the maximum temperatures are greatly reduced from the original G80 GTX, while the core has no difficulty reaching 720MHz on stock air cooling alone.
I don't think many GTX'es can do that... ;)
 
That's interesting. Here is a translated link:

http://translate.google.com/transla...&hl=en&ie=UTF-8&oe=UTF-8&prev=/language_tools

In one case (Splinter Cell Chaos Theory), the 8800 Ultra (with core at 612Mhz) is 20% faster than the overclocked 8800 GTX (625Mhz core, 2.0Ghz mem). In Far Cry, Prey, 3dmark06 SM 2.0/3.0 tests, the stock Ultra is actually slower than the overclocked GTX. In FEAR, Company of Heroes, and Serious Sam, the stock Ultra is slightly faster.

No question that an 8800 Ultra overclocked to something like 720Mhz core would be pretty impressive. Looks like there are definitely some efficiency improvements on the Ultra, although GTX owners need not be overly worried about their purchase being outdated by any means ;)
 
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