Okay, I plan on doing some major overclocking on my Geforce4 MX420 to get it to at least a Geforce3 Ti200 level. What I want to know is which HSF to get. I was wanting something like a Thermaltake VOLCANO 7+, but that is too large...and since you guys are the smartest at this, I was wondering at what to get..I already have my ramsinks. I don't care about price or noise as long as it gets me somewhere around there. Oh, and this is a PCI card since I don't have an AGP slot, so I can move it to the last slot if space is needed, which I'm sure will happen... Thanks guys!
With that card, and it being a PCI card, you will never see that kind of performance, you MIGHT get it to the same clock speeds, but it will never be as fast....... That being said, I have a Crystal Orb on my ATI card, and it dropped my temperatures by about 20C, so I imagine it would cool that bugger quite good. You could always go peltier cooling like Zappy did *shameless pimp* Or water cool it like I've seen a few people do. That's my advice. Have fun.
You definitely need to look a chipset coolers rather than CPU ones! A couple that spring to mind are the Crystal Orb which certainly looks cool and does a fair job, and the copper Icicle which is supposed to be pretty good! OCS should have both if you are in the UK.