AMD Zambezi news, info, fans !

[BeepBeep2]

4.7 to 5x multiprocessor speedup is simple to explain. In single thread test you have one core using one 256bit FPU. In MT you have 8 cores using 4 256bit FPUs. From one to 4 FPUs you have 4-5x speedup (more than four due to SMT mode in the FlexFP which adds 20% on top of 4x).
The problem is one 256bit double-sized FlexFP is slower than old Thuban core.At least in these benchmarks/conditions. That's what's illogical.

Obviously it's all terrace215's fault. (lol, joking)
We will see when the CPU's will launch, a CPU performing at that level is probably only worth about $120.

CrazyNutz -
Why would Cray buy a downgrade, even if it did have 4 more cores? I think all these samples are crippled in some way and that is the reason why John stated that nothing from anyone other than AMD with proper testing procedures will be correct until after launch time.