Ti4200 overclocking

[Deptmaster]

Hey I just got my Geforce4 Ti4200 (chaintech 128MB) and started tweaking yesterday. I'm at 300mhz core and 540mhz memory stable.
Are there any voltage tweaks out there for me to get a little more speed out of this sucka? 540 for the memory isn't that bad considering there is not even passive cooling for the chip but every little bit helps. I'm treading 4400 teritory and maybe anymore speed is unrealistic i don't know, how much more do you guys think ram sinks and maybe alittle more juice would buy me?
Thanks alot, Ian.

[phantom punisher]

open up the side of the case and put a big house fan blowing at it on high. that will give you an idea of how much you can gain from better ram cooling

[Deptmaster]

Thats a good idea I'll try that. Any clues about uping the voltage?