G80 De-Mystified; GeForce 8800GTX/GT

[StyM]

source here

* Unified Shader Architecture
* Support FP16 HDR+MSAA
* Support GDDR4 memories
* Close to 700M transistors (G71 - 278M / G70 - 302M)
* New AA mode : VCAA
* Core clock scalable up to 1.5GHz
* Shader Peformance : 2x Pixel / 12x Vertex over G71
* 8 TCPs & 128 stream processors
* Much more efficient than traditional architecture
* 384-bit memory interface (256-bit+128-bit)
* 768MB memory size (512MB+256MB)
* Two models at launch : GeForce 8800GTX and GeForce 8800GT
* GeForce 8800GTX : 7 TCPs chip, 384-bit memory interface, hybrid water/fan cooler, water cooling for overclocking. US$649
* GeForce 8800GT : 6 TCPs chip, 320-bit memory interface, fan cooler. US$449-499

source

NVIDIA G80 will be the first DirectX 10-compatible graphics circuit on the high performance market

[buff]

so if thats true......384 bit interface. I had heard about that......
768mb is not consumer friendly, but I guess it wont matter to us.

[ahmad]

Pulled. I wonder if its Nvidia trying to avoid bad publicity when they deliver what people don't expect...

[Zorlac]

OMG...I just wiped a hella long shoe-lace drool from my face! LOL

Seriously though, no mention of DX10?

Either way, Vanguard is going to be badass this winter!

[dimasdw]

hm..double thread ?

[iddqd]

I don't see a 2nd thread.

[Pillo-kun]

what happened to the 1st thread?

[iddqd]

Pulled. By Nvidia

[Pillo-kun]

Were we to accurate?

[arisythila]

Sweet!

~Mike

[Pinnacle]

do we got a Nvidia rep here?

[dimasdw]

I don't see a 2nd thread.

i can't find the other same thread too, i posted reply in 2nd thread ...

[RPGWiZaRD]

hah, seems like both VR-Zone's and the other thread about this was removed now. I just hope the specs aren't inaccurate, if they aren't then there's no need to keep it in secret as it would only make people excited.

Or then Nvidia wants to tweak the cards furthermore still, dunno but those specs sounded almost too good to be true for G80.

*copies the specs to .txt before this thread is removed too *

[***Deimos***]

hah, seems like both VR-Zone's and the other thread about this was removed now. I just hope the specs aren't inaccurate, if they aren't then there's no need to keep it in secret as it would only make people excited.

Or then Nvidia wants to tweak the cards furthermore still, dunno but those specs sounded almost too good to be true for G80.

*copies the specs to .txt before this thread is removed too *

dude,
I hope you dont mean what I think you mean by "tweak".
The API was conceived and designed a long long time ago. Likewise, the chip (hardware) was conceived and designed years ago. And if the chip was spotted on a PCB, it must have been designed a long time ago too. And dont forget, since its new technology, nvidia needs months of testing time.

If they wanted to make architectural changes now, we'd be looking at design/production/testing delays that would push us into mid 2007.

As for why nvidia would want to pull the threads... well, it can't be helping the sales of current lineup now can it? (in comparison, much different story for Intel and Conroe, where with gamers and enthusiasts Intel had like no market, so nothing to lose)

[Magnj]

interesting

[zakelwe]

1.5Ghz and 700M transisters? Conventional design you would be struggling to see how that was possible. I'm not convinced about these numbers though probably there is a grain of truth in the descriptions of the gpu.

Regards

Andy

[Turtle 1]

The link to VR zone doesn't work. I should say the article is no longer up.

I find that whole thing strange. NV with Unified shaders ahead of ATI . Not likely.

[lizardmech]

I wish they would hurry up with these cards, I need a new card for crysis and im not goig to waste money on a high end dx9 card.

[punisher69]

is this confirmed to be true?

EDIT: the specs

[Turtle 1]

I never thought I would ever ever say this . But I hope its true. Since I am now a new NV fan .

[nn_step]

lets think about this.
The X1900XTX has 384Million transistors and a 650 Mhz core speed.
And it is a big fat Die.
And they think they can make it twice as large and more than twice as fast...
Not happening on the 90nm process. Questionable on the 80m process

[Vapor]

The other thread was not pulled by nV....it was pulled by staff due to flaming.

As for the VR-Zone link...got me.

I think Andy's right on here...1.5GHz at 700M just isn't going to happen yet, but there probably is some truth behind the specs.

I still wonder about the PCB config....one massive one? Two? A 10- or 12-layer PCB? A double-sided config?

700M is a lot to put on one package, and the memory config really doesn't seem like it's coming from one controller. :-/

Also...FCAA (in my best guess) stands for Free-computation Anti-aliasing, similar to what ATi did with Xenon, but I'd bet this implementation has a second chip in psuedo-SLI with the first chip, where it dedicates itself to AA (and maybe other special effects) while the primary chip does the typical work (could also be nV's work-around for getting MSAA+HDR to work without a 512-bit ringbus [yes, that thing really does work]).

Of course, just speculation....maybe the only thing that beats it is a nice cup of lemonade on a warm Sunday

[Turtle 1]

Well it really does seem unreasonable. I was reading some stuff on Cell today . On how the PS3 well use its memory . the author brought up an interesting point. As we all know playstation3 is using XDR memory . So the author sugjested that NV could use XDR memory on the G80 gpu. Kinda makes sense. Who knows.

[Micutzu]

We could also take into consideration the possibility of an asymetric 2-chip GPU : 700mil transistors in total, 1.5Ghz in total, two different memory controllers with different memory configurations, hybrid water/air cooler (different for the two chips) ... SLI technology at it's best . And that is doable on 90nm.

[nn_step]

We could also take into consideration the possibility of an asymetric 2-chip GPU : 700mil transistors in total, 1.5Ghz in total, two different memory controllers with different memory configurations, hybrid water/air cooler (different for the two chips) ... SLI technology at it's best . And that is doable on 90nm.

two chip GPU, it'll make the board more expensive but oh well.
And probably not sporting unified shaders