[rescue] The best 'rescue' workstation
Francisco Javier Mesa-Martinez
lefa at ucsc.edu
Sat Apr 23 23:00:40 CDT 2005
On Sat, 23 Apr 2005, James Fogg wrote:
> I can't believe this question was asked on this list. CPU clocking has
> nothing to do with performance. It's all about architecture and I/O
> design. The Intel chip is a 20 year old design extended by marketroids
> into the new milenium.
No it is not, a Pentium III believe it or not such an old
microarchitecture when comparing it to the UltraSparc. BTW, there is a
clear difference between an ISA anda Microarchitecture. A 1Ghz P3 will
run circles around a US II integerwise unless you are more interested in
FP performance. On the good side of the P3 it can do out-of-order, which
and US can't and it as a hardware managed TLB, so believe it or not on a
per Mhz. basis a P3 is almost more efficient than a US II. However the UPA
switched architecture is far better than the half assed snooping bus
system that the P3 has for SMP.
> Depending on task, an Intel CPU is about equivalent to a decent CPU 1/2
> to 1/3 it's clock speed. So, it will be about equivalent to your 1ghz
> Intel box.
As usual it depends, for iteger codes (i.e. most desktop experiences) it
won't even be close (the Sparc that is).
Gotta gave the devil its due...
More information about the rescue