Talk in London about Xenos

[ralexand]

So does the RSX have a tessalator also? Is RSX WGF 2.0 compliant in a functional since? And what's the advantage of WGF 2.0?

Not sure if RSX has a tesselator, but if not, that's something a SPE could be very good at

I doubt RSX is WGF2.0 in a functional sense either (the specification not being finalised aside). It's beyond WGF 1.0 probably.

WGF2.0 is basically the "real" DX10. Programmable tesselator, SM4.0, virtual memory for the GPU etc. (see: http://www.beyond3d.com/articles/directxnext/).

Awesome, thanks for the link. Reading that it seems like the xephos was designed around directxnext with its unified everything.

 

[Megadrive1988]

Xenos is equivalent to a 32-pipe gpu. It's WGF 1.0, not WGF 2.0 (can't create vertices).

I think I'll go back to PC gaming. No PPU, no WGF2.0.

http://www.bit-tech.net/news/2005/05/25/ati_xbox_360_london/

I don't believe it is equivalent to a 32 pixel pipeline GPU.

Xenos can only output 8 pixels per clock, although those pixels are anti-aliased and have heavy amounts of shaders applied to them.

 

[Xmas]

WGF2.0 is basically the "real" DX10. Programmable tesselator, SM4.0, virtual memory for the GPU etc. (see: http://www.beyond3d.com/articles/directxnext/).

Drop the tessellator.

 

[PC-Engine]

The 6800U has 4 fragment processors that each operate on 4 fragments at a time, leading to the common reference of 16 fragment/pixel pipelines.

The new G70 is slated to have 24 I believe. I'm not sure about the R520....

Ah, true. So he might be referring to SLI-ed 6800s... It's surprising to me how much Ati people seem to be downplaying the raw power of this chip when talking about Xbox 360, and playing up it's cost effectiveness or power saving or elegant design or whatever. I wonder why they keep doing that, when the chip seems very capable. Do they actually expect RSX to outgun this by a far, because to me it doesn't seem that will happen if it has 24 pipes and R500 is equivalent to 32...

I'm thinking because increases in performance is nothing new? Everyong expected higher performance, but everyone didn't expect a fairly exotic and efficient architecture. I think most people would find the architecture more interesting than the standard increase in performance.