PlayStation 3 versus Xbox 360 - End all Arguments - Please Help

[rocketpig]

MikeB said:
Basically the article is riddled with mistakes, just some quick examples:

> 360’s GPU is actually capable of 96 billion shader operations per second.

Microsoft doesn't claim this, ATi was talking about floating point ops possible to achieve with the GPU, shader ops are something different, it's 48 billion shader ops per second max.

> 115GFLOPS Theoretical Peak Performance for 360 CPU

With a normal measure of theorectial peak it's 77 GFlops, 115.2 figure is the theoretical peak if you include non-arithmetic instructions such as permute. These are not normally included in *any* measure of FLOPs. If you want to count non-arithemitic peak figures, the usable Cell components in the PS3 will get 268 Gflops (6 SPEs + PPE) - over twice that of the 360

> 218GFLOPS Theoretical Peak Performance for PS3 CPU.

Correct for 1 PPE + 7 SPEs (unlike the article claims this to refer to 8 SPEs). Of course the OS also uses up CPU cycles (like on Windows, like a Epic dev pointed out in an interview Windows/DirectX can use up 50% of available CPU cycles, this is the case for the PS3 as well as for the XBox 360, the PS3 has one SPE reserved for the OS, stuff the XBox 360 has to dedicate resources for on its 3 cores)

> The 360’s 12 DVD drive has a speed of 16.5 megabytes per second compared to the PS3’s 2X Blu-ray drive which has a speed of 8.7 megabytes per second.

The PS3 Blu-Ray drive achieves 9 MB/s. The XBox 360 x12 drive slows down to a x8 speed drive max like all 12x speed DVD drives for reading dual layer discs. As the Blu-Ray drive speed is sustained on average it loads faster than a 12x speed drive for dual layer discs. A DVD drive can read the outer tracks far more quickly than the inner tracks.

> Using a 1Kx1K matrix and 8 SPE they were able to achieve 73.4GFLOPS

That was a very early unoptimised test, later such tests showed the SPEs to achieve near 100% efficiency.

Please don't use that article as a source for anything, browse through Beyond 3D forum discussions, manufacturer drive specs, university research articles and such instead.

I don't know whether to put my head through a wall or ban you; a guy asked a question and you really had nothing of substance to offer. Please stop your PS3 bullshit.

You offered completely biased technical information that tells maybe 1/4 of the story. The OP was asking a lot more than that. Mike, STOP IT. Your schtick is tired. Let it go.