5700LE oc

[electrorcamd]

I have an evga GeForce FX5700LE. The card is 225 core/400memory stock. When I overclock it with Coolbits, I can max the Coolbits settings out at 500MHz core. However, I know it can go higher, because it has no problems at all at 500. The memory can pass the test at up to about 487, if cool, 493. This is using the stock cooling (small heatsink/fan on core, no RAM sinks). Is this typical, and is there a program that will let me go higher? PowerStrip maxes at 450ish core. RivaTuner maxes out somewhere lower, don't remember where since my good computer isn't working. Any other ideas, and on how typical this is?

Thanks