Art, There is a specific list for suse on AMD64: suse-amd64@suse.com. There is a high signal to noise ratio and two of the Suse developers regularly post there.
I would expect 64-bit kernel to work and be supported on both of these CPUs - often the portability issues are more to do with the Mobo's - Sata, Nvidea et al. The 64bit kernel supports Opteron, Athlon64, Athlon FX - anything
On Thu, Apr 22, 2004 at 10:38:48AM +0100, daniel.kidger@quadrics.com wrote: based on AMD's 64bit K8 core.
also IMHO the 'FX is basically the same chip as the Opteron - and can be used in dual-cpu servers.
FX is single CPU only, but normally has a higher frequency than a Opteron 1xx.
The 3400+ is just a x86 souped up to 64-bit instruction set and registers and doesn't have the dual-channel integrated memory controller like the FX and Opteron have. Apart from cost, I don't see at as an obvious choice for clusters.
Athlon 64 3400 is the same CPU core as FX and Opteron, but it has a single channel memory controller and supports unregistered DIMMs (FX/Opteron require registered DIMMs) This means you get less bandwidth, but also less memory latency. -Andi