Looks like an accurate slide for 6970/Cayman specs

[Skurge]

Apparently the memory bus is the hardest thing to scale down. That is, if we pretend that shaders can be scaled down linearly with the process size, the memory bus wouldn't scale linearly. Thus it costs a lot more to do 384-bit than 256-bit (not to mention you'd have to add more memory chips, and PCB complexity increases)



Actually, AMD is 1600/5 = 320 SIMDs



Shader groups matter in real world benchmarks because apparently, it was extremely hard to feed AMD's 5-way configuration. In fact, it was rumored that internal benchmarks showed that the 5-way was only being used 80% of the time - meaning the 1600SP Cypress acted more like it was a 1280 SP card. Synthetic benchmarks, coded specifically to use all 5, however, were able to utilize the 1600

Going to 4D apparently puts it VERY close to the equivalent in 5D - meaning that a 320 SIMD 4D configuration is very close to the 320 SIMD 5-way config currently existing.

Thus SIMD count matters a lot.. going from 320 -> 480 is a 50% increase

And apparently a more real slide:

Nice, it says November 18 2010 at the bottom.

 

[ScorcherDarkly]

Nice, it says November 18 2010 at the bottom.

Good catch!

 

[Skurge]

Good catch!

Yeah, this looks pretty legit.

 

[HurleyBird]

So, Antilles matches GTX 580 for geometry throughput? Tha'ts not completely impressive, but at the same time it's good that they are moving Forward.

The much more impressive number here is shader performance. Antilles has as much dual precision muscle as GTX 580 has single precision.

 

[Jdawg84]

Am i the only one sick of slides and want actual product?

 

[Gloomy]

Am i the only one sick of slides and want actual product?

Why? You have a 580.

 

[Jdawg84]

Why? You have a 580.

And whats your point? I'm not a fanboi like 99% of the people on this forum. I play both sides :biggrin:

 

[Skurge]

And whats your point? I'm not a fanboi like 99% of the people on this forum. I play both sides :biggrin:

Hasn't sounded that way

 

[formulav8]

One thing you can count on is the new GPU giving nvidia a run for its money in the consumption compartment :hmm:

It will of course perform very well but I bet it will be a huge die.

I like hardware as much as the next guy but fannyism is just stupid. I won't lose any sleep whether AMD kills the GTX580 or not. Its just stupid hardware in the end. ()

 

[dookulooku]

It's been speculated that the slide with the 5970 specs has been altered. The SIMD engine and stream processor numbers seem to use a different font/font size than the rest of the slide. It could just be a bad editing by whoever made the slide though.

 

[Gloomy]

And whats your point? I'm not a fanboi like 99% of the people on this forum. I play both sides :biggrin:

My point is that after spending 499 dollars on the latest and greatest, I wouldn't be looking at anything else for a while, green or red.

 

[Skurge]

My point is that after spending 499 dollars on the latest and greatest, I wouldn't be looking at anything else for a while, green or red.

Actually he has 2 of them.

 

[Silverforce11]

So we have a 50% increase in SP groups. 480 vs 320 in cypress and 224 in barts.
There's beefed up TMUs no longer linked to each SIMD thus should increase efficiency hugely.
Scalable independent tessellator.
Improved bandwidth usage buffering.
Doubled poly/clock, tweaked rasterizers.

And the funny part, two of these fits 300W TDP. Therefore, its not going to be >225W each and not a huge die like NV fud suggests.

*IF* they get their drivers right for this architecture, there's room for much more than 50% increase over cypress (There were leaks with old cat10.10, had cayman 35% better than cypress. There was another set of leaks on internal ATI drivers optimized for cayman had it ~50% better than cypress.). Thats my only concern. Totally new architecture is going to be a nightmare on their driver team.

Why do i think more than 50%? 480 vs 224 barts. Crossfire barts hammer the gtx580. Thats barts without most of the new architecture improvements.

Edit: Something to ponder about, these specs look legit, performance should be very good. Even if there's drMOS constraints, they have enough for a soft launch earlier, get reviews out there to put pressure on NV. Why didn't they? I think its their messy drivers, probably buggy or crash prone in games.

 

[PlasmaBomb]

Actually he has 2 of them.

And he just dropped $40k on a car...

http://forums.anandtech.com/showthread.php?t=2121807

 

[RussianSensation]

64 pixels / clock.

Mad AA powweeeeeeeeeeeeeeer incoming!

Mad double-precision powweeeeeeeeeeeeeeeer incoming!!!

HD4870
1.2 TeraFLOPS Single-precision
240 GigaFLOPS Double-precision

HD5870
2.7 TeraFLOPS single-precision
544 GigaFLOPS double-precision

HD6990
6.0 TeraFLOPS Single-precision
1.5 TeraFLOPS Double-precision :biggrin:

 

[Silverforce11]

So he's rich why are you guys giving from flak ..

 

[Silverforce11]

64 pixels / clock.

Mad AA powweeeeeeeeeeeeeeer!

Mad GPGPU powweeeeeeeeeeeeeeeer!!!

HD4870
1.2 TeraFLOPS Single-precision
240 GigaFLOPS Double-precision

HD5870
2.7 TeraFLOPS single-precision
544 GigaFLOPS double-precision

HD6990
6.0 TeraFLOPS Single-precision
1.5 TeraFLOPS Double-precision :biggrin:

Antilles most likely uses downclock XT cores. So cayman xt would be what, 0.85Tflops dp? Holy cow, are they going for the HPC crowd or what.?

 

[RussianSensation]

So he's rich why are you guys giving from flak ..

Rich people don't drive a Ford unless it is a Ford GT. If you are rich, you don't have to tell people you bought a fully loaded car. The car speaks for itself!

 

[Silverforce11]

Funny that slide here: http://www.chiphell.com/thread-140622-1-1.html

But at a more straight angle. Two leaky sources at the same meeting with secret poor res phone cameras??

 

[3DVagabond]

Funny that slide here: http://www.chiphell.com/thread-140622-1-1.html

But at a more straight angle. Two leaky sources at the same meeting with secret poor res phone cameras??

Why is it whenever someone links to Chiphell, I never see the pic they're talking about?

 

[Gloomy]

Why is it whenever someone links to Chiphell, I never see the pic they're talking about?

Can't you read Chinese?

 

[toyota]

Can't you read Chinese?

so being able to read Chinese will make a slide appear?

 

[Gloomy]

so being able to read Chinese will make a slide appear?

It lets you distinguish links to attachments.

 

[Silverforce11]

Oh, my bad. Here's the imageshack ul.
http://img809.imageshack.us/img809/6274/6970.jpg

 

[3DVagabond]

Can't you read Chinese?

Not in this lifetime.

Oh, my bad. Here's the imageshack ul.
http://img809.imageshack.us/img809/6274/6970.jpg

Thanks. I just figured click on link - see slide or post it was in, anyway.

Everyone on Chiphell has all these big avatars and pics in their sigs, doesn't chiphell allow posting of images?