In a related post, around 500 3DMarks were missing before and after reinstalling my Windows system. That’s a lot of points for an unknown cause. Thankfully, it’s no longer unknown. When I flashed my motherboard’s BIOS to update it, all my overclocking settings went to default. So I set my FSB and RAM clocks and timings to my previous configuration. Turns out that I missed the HyperTransport Link clock to default brought it down to 200Mhz. I set it back to 1Ghz and I got my 500 3DMarks back!

This benchmark is pretty much final. This is a single HD2600XT benchmark.

System configuration:

1. AMD Athlon64 X2 5600+ @ 3.02GHz
2. 2GB Corsair XMS2 DDR2 @ 860Mhz
3. HEC 550W power supply
4. Creative Audigy 4
5. Seagate 320GB 7.200RPM SATA

Good thing I didn’t trust Tom’s Hardware Guide’s GPU charts when I bought my HD2600s. I knew they were badly dated.