8800GTX Shader overclocking question?

Hello everyone, I have had great success overclocking my 8800GTX GPU core to 651MHz, Shader 1525MHz and Memory 2006MHz. I've already found my GPU core limit using RivaTuner and want to push my Shader and memory a little more. During my entire overclocking of this graphics card I haven't seen not one degree higher than 68C full load and idle 52C going from Stock of 576MHz GPU core to 651MHz, so I figure that my temps are still quite low for more overclocking and this is still on my stock cooler.


Is 3DMark06 the best tool for checking the shader overclocking of a graphics card or is there something else better out there? Thank you for your suggestions!