"Since publishing our Linux review of the AMD Phenom 9500 on
the Spider platform a month ago, we have continued in our investigation
of this first AMD desktop quad-core processor that has been very
problematic with Ubuntu 7.10 Linux. Fortunately though this support
isn't stagnate and a better picture is painted when using the latest
development builds of Ubuntu 8.04 "Hardy Heron" with the Linux 2.6.24
kernel. Per reader requests, we have carried out additional benchmarks
of the Phenom 9500 to compare its 32-bit and 64-bit Linux performance."