I just wanted to share these results that I got today.

Gainward 6600GT.
Vgpu 1.72V
Vmem 2.3V (timings tightened)
Watercooled

CPU:4GHz (01 and aqua 4050MHz)

3DMark01 (38336):
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3DMark03 (12961):
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3Dmark05 (5491):
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3DMark06 (2535):
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Aquamark (95.7fps)
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Nice old card