@angelheart
Quote:
Surely bus/bandwidth is better on AMCC for this value - so that needs investigating to improve on future systems.
The newer AMMC PowerPC SOCs only scale to 1.3Ghz.
The LSI Axxia PowerPC SOCs look much more interesting on paper. They scale as high as 1.8Ghz on a 4 core SOC and the 476fp core is rated at 2.7 DMIPs per Mhz. It also has bigger L2 cache than the 465 cores as well as large L3 cache.
It also has a SIMD unit although I'm not sure if this is Altivec/VMX* although it would make sense for IBM to have designed a a new vector unit for the 476fp.
LSI don't specify what version of PCIe is used on there product pages but I did see a product breif that sugested that it was PCIe 3.0
A system based on that faster Axxia SOCs should be able to trounce the X1000 in every aspect.
Both the Axxia ACP3500 and ACP3400 have a 1295 pin/ball count so in theory should be able to use the same board for both. That would give a good range of speeds and cores. The 3500 can have 2 cores at 1.1Ghz, 2 cores at 1.26Ghz, 4 cores at 1.26Ghz and 6 cores at 1.26Ghz while the 3400 can have 2 cores at 1.6Ghz or 4 cores at 1.8Ghhz
*VMX is IBM's name for Altivec.