killzone 2 uses only 60% of ps3 SPUs

[MikeB]

haxxiy said:

^ GPU =/= CPU

And even if the remaining SPU's were used for graphics processing it still would write at mere 4 MB/s at PS3's video memory.

It makes no sense for the Cell to use GDDR3 memory, it uses the low latency much faster XDR Ram. It only makes sense in some cases for the RSX to use XDR Ram in addition to its GDDR3. The Cell to GDDR3 link is mostly useful for testing purposes and such.

The RSX using XDR, doubles bandwidth and increases graphics memory. I guess this is only useful for games where the Cell doesn't have to move around data too much.