Thermalright cooling? Wow, you have a top notch Socket A system, the only thing that's missing is a mobile Barton (if you don't count that even Socket 754 running at lower MHz frequencies may outperform Socket A's nowadays...
)
But seriously, with enough voltage, your desktop chip should go nicely over 2.3 GHz...
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AMD Athlon XP 2500+ AXMH 2500 FQQ4C
IQYHA 0348 SPMW
2 x 512MB Centon PC3200 (Samsung chips) @ 9 4 4 3
[200] FSB x 12 = 2400 MHz @ 1.85 Vcore with memory frequency at 100% [200 FSB] @ 2.90 Vdimm and 1.8 Vdd
Epox 8RDA3+ v2.1, BIOS 07/29/2004
Thermalright SLK-900A with variable speed 80x25mm Thermaltake Smart Fan 2
AIW 9600XT 128MB; Antec SX-835II case ; 380W Antec TruePower TP380
Four 80x25mm Case Fans + 1 Variable speed 80x25mm Fan YS-Tech FD1281259B-2F