|A stock-clocked X2 3800 will definitely act as a bottleneck. Does your BIOS let you overclock? Pushing it up to 2.5GHz should be quite easy and would give the GTX-260 a little more headroom. |
If you can't overclock, get the GTS-250 instead.
Socket 939|Dual-Core Opteron 185 @ 3.2GHz|A8N32-SLI Deluxe|4GB CL2 PC3200|SLI 8800GTS|1TB|PCIe X-Fi Titanium Pro|Win7 Ultimate x64