This is to that long wall of text on in page 2, couldn't quote for some reason.
First of all the 10mb of Edram (not 8mb) is used to store the frame/Z buffer/alpha blending, not to metnion stencil operations. A known fact is these are the most bandwidth intensive parts of a graphics subsystem. This saves an amazing amount of memory, allowing Xenos to uses most of the memory bandwidth it is given. This gives most of that 22GB's freedom to which the CPU or GPU need. This not including the very tightly packed 10.8GB up and down (dual channel) connection between the GPU and CPU, which is nice because the GPU can read directly from the CPU L2 and lock it if needed (this helps stop an inefficencies in the L2, and with the small 1MB the CPU has to share, this helps a ton)
If anything, this givens the 8 ROP's on Xenos FAR more flexablity then RSX's 8...they simply won't push as much.(48GB vs 256GB in framebuffer bandwidth).
Why you are comparing these cards with ATI/Nvidia's DX10 cards are beyond me. Xenos and RSX are FAR FAR more similar to their respective R5xx and 7xxx cards. It's a prety well known fact that the R5 series had more shader power then 7xxx series, not that you could be mad at the either. It's been said that Xenos is slightly more power then the R520 chip (aka 1800XT) and based off the specs I culd believe it. Seeing what we know of the RSX, it similar to the 7800GTX, the only problem is it has bandwidth similar to the 7600GT, and its pipes while clock for clock are more powerful, there aren't as many, and thats not even dealing with the inefficency of a traditional pipeline. Yes it has higher bit HDR, but it can't do HDR+AA, at least no true floating point HDR. Shader based HDR is a very nice alternitive, but it's not as precise, and it takes power from the rest of the card.
I haven't mentioned Memexport, which the ps3 has nothing like. Memexport is like an advanced version of stream-out in DX10. This allows the GPU to slave one of the 360's core entirely for graphics...a good reason why the 360 is a beast at procedural processing.
Now clearly it's not as white and black as most fanboys will have you believe, but simply put Xenos is a more flexible monster then RSX. Innovazero2000
The lack of HDR+AA is where the Cell comes in. Ninja Theory said that they have HDR emulated on the Cell in Heavenly Sword, freeing up the RSX to do AA. Just the fact that the RSX ins't doing any HDR at all allows it to focus that power in other areas.
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