I've got an eVGA Geforce 2 mx 400 with 64 mb of ram and i currently have the core @ 225 mhz and the memory @ 193 mhz. I've got the side off my case and a big fan blowing on the card. I'm not having any stability issues. Do you think I can go higer? I see people with a 400mhz memory clock. The card is only warm when running ut2k3.