
This afternoon Legit Reviews Forum member wickedld9 came over armed with his brand new AMD Athlon 64 4000+ "San Diego" processor. He was even nice enough to let us throw some water cooling on it and run some tests on it!
Here is a retail 4000+ on the DFI SLI-D motherboard running Corsair's PC-4400C25 memory on DFI's 427-3 Beta BIOS.
Stock Everything:

Best Stable Overclock:

We ran both Corsair's Samsung TCCD based memory and OCZ's Winbond UTT memory on the board and tried a numerous voltages, but was only able to get up to 2.91GHz with some stability.
We were able to run Comanche 4 at 640 x 480 resolution and came up with this for the results:
Both At 2.2GHz (11x200)
3500+ Venice: 72.82
4000+ San Diego: 76.46
Both At 2.9GHz (10x290)
3500+ Venice: 95.46
4000+ San Diego: 99.50
This was the closest Legit Reviews has ever been to breaking 100FPS on Comanche 4! The extra cache is used up on games, but doesn't make much difference on benchmarks like Sciencemark, Cinebench, Everest, or Sandra.
I'm sure wickedld9 will keep us inforemed how his CPU does after it has been broken in!