Is the Xbox 360 a Success?

[mjk45]

Kynes said:

Pemalite said:

mjk45 said:

Look and this is the last time I reply since i said at the end of my last post we will have to agree  to disagree ,  if you read me correctly  said it was a custom card based of one with dx capabilitys , in that case a 7series and yes it is custom since they don't put in a standard card, it is simply the matter that open gl works fine and does everything needed of it , and that is why it doesn't matter about the card being designed to work with the latest dx because it would only matter if dx influenced the hardware to the point it was the only viable option left  , so to me it comes down not to DX's affect on gpu develoment or the technical merits of what ever api  , but on that development having a such an affect that Sony is beholden to it and to me unless they use it my answer is no.

But it's not a custom card at all. That is the point I'm making.
The RSX (PS3 GPU) uses the G70 core which is exactly the same as the PC version, the only difference is the memory bus (Many graphics chips use different types of memory for more performance or a lower price) and the lower fabrication process. (So it runs cooler, uses less power and is cheaper to make).

RSX: G70 core, 24 pixel shaders, 8 vertex shaders, 24 texture mapping units, 8 ROPS, Core clock 500/550mhz.
GeForce 7800 GTX: G70 core, 24 pixel shaders, 8 vertex shaders, 24 texture mapping units, 16 ROPS, Core clock 430/550mhz.

Only difference is the G70 chip on the PS3 has the ROPS cut in half, ROP means: "Render Output Pipeline".
ROPS handle the final transition from the pixel pipeline to the display by building the pixel fragments generated from the pixel pipeline into complete pixels. - The ROP unit also optimizes the display image to save on memory bandwidth, for example when dealing with depth compression and colour comparison, amongst other things.

I would assume Sony cut the ROPS in half to save on money, it's not unusual for PC manufacturers to do the same to hit certain price points.

But regardless of what you say, the GPU in the PS3 is exactly the same as the PC part, hell the core codename is named exactly the same, how you can deny it beats me. Is this some blind faith thing you have going on?

Rops in this chip are tied to the number of memory chips. 128 bits need 4 32 bits chip, and each rop is tied to a 16 bits memory channel. Newer architectures decouple rops and channel width.

256 bits needed 8 chips, so it's costlier, as you assumed.

Ok I concede you the custom bit , after all , all that means is it was something made /tuned to the customers specifics needs  , and it gets away from the rest of my reply ,and that is the part that shows my view on the matter .