Xbox2 CPU : 240 Gflops..?

[Megadrive1988]

I was thinking this morning about the X2 CPU (or Xenon CPU) and it could be.

The Power5 CPU is a Server-CPU composed by:

-4 Cores at 3Ghz that supports Mutithreading.
-38MB Cache L3.
-Cache L3 is the 50% of the chip area.
-The chip area has a size around of 400mm.

If you take the 38MB cache L3 you have a 200mm 4 cores, but you can change one of the cores for 3 VMX units and you can mantain the bus channel of the L3 Cache of Power5 for the direct transfer between ATI GPU and IBM CPU.

This is my idea of Xenon CPU.

I don't think Xenon CPU will have any L3 cache at all. and I would be extremely happy to see even 2-3 MB of L2 Cache instead of the reported 1 MB.

 

[version]

XENON:

- 2 core G5 at 3 GHZ with 2 MB cache
- 8 vectorprocessor in another chip at 3GHZ
- ati gpu with 32 unified shader, 500 MHZ

 

[one]

I was thinking this morning about the X2 CPU (or Xenon CPU) and it could be.

The Power5 CPU is a Server-CPU composed by:

-4 Cores at 3Ghz that supports Mutithreading.
-38MB Cache L3.
-Cache L3 is the 50% of the chip area.
-The chip area has a size around of 400mm.

If you take the 38MB cache L3 you have a 200mm 4 cores, but you can change one of the cores for 3 VMX units and you can mantain the bus channel of the L3 Cache of Power5 for the direct transfer between ATI GPU and IBM CPU.

This is my idea of Xenon CPU.

How can they be clocked at 3Ghz when the fastest POWER5 processor in the market now is clocked at 1.9Ghz?

 

[aaronspink]

The Power5 CPU is a Server-CPU composed by:

-4 Cores at 3Ghz that supports Mutithreading.
-38MB Cache L3.
-Cache L3 is the 50% of the chip area.
-The chip area has a size around of 400mm.

Ok, if you can't read and understand public documentation then maybe you shouldn't post. A power5 cpu actually consists of the following:

- 2 dual thread cores @ 1.9 Ghz
- 1.9 MB of cache
- die size of 389 mm^2 in 130nm

realistically you could produce an embedded version in roughly 200 mm^2 in 90nm.

Aaron Spink
speaking for myself inc.

 

[Sonic]

This thread will be temporarily locked while we do some pruning on eastcore/deadmeat's posts.

 

[bbot]

XENON:

- 2 core G5 at 3 GHZ with 2 MB cache
- 8 vectorprocessor in another chip at 3GHZ
- ati gpu with 32 unified shader, 500 MHZ

Is this only what you wish Xenon to be?