There are two different models of the GT335M card. The model on the second revision card has more shader IIRC.

I believe I got 17 million hashes per second. Its been about a month tho.

I was able to overclock the core with overdrive but underclocking would lock the machine up.

I'll give atitweak a try. Thanks guys.

I'm running an ubuntu 10.04 server with xfce.

The server has an athlon 140, 2gb ram, and 2x5830's. I have them both overclocked to about 950mhz core. I tried to underclock the memory but everytime i do so it locks the machine up.

I have this same exact hardware also running under windows xp sp3 and I get the same results. ANY modification to the memory clock speed on either GPU and it locks the machine up...

Any ideas?

Thanks.