Using Powerstrip to overclock my TNT2 M64

[fragmaster_sexay]

I have a TNT2 M64 I know I know but I'm getting a Geforce 2 MX in about a month and in the meantime I wanna sqeeze the best performance I can out of my old card.
I have it running (engine speed this is) at 140MHz. Its default was 120MHz and I was basically wondering if anybody had had any experience in overclocking these and how far they go up to. The slider will take it to 200MHz and I was also wondering if I take it too far will the card Fry because I may be getting a new card but I have to pass the M64 down to my 11 year old bro eventually. (get him trained in fragging early).
If anyone can Help I'll be well chuffed

[SKILL]

I have a TNT2 Vanta 16Mb AGP and with a fan and the standard heatsink i can get it to 150MHz core and 179MHz memory, also if you push it to far then you shouldn't fry the card as i set mine to 200MHz core 200MHz memory and it crashed.(i wanted to see it FRY).

[fragmaster_sexay]

Cool
When I upped the memory though it made my monitor flicker but when I clocked it over 129 MHZ, I think it was 150Mhz it actually got LESS in 3d mark pro 2000.
Wierd, I might try it at 170MHz cos someone told me it worked.