Hi, I just though i might mention a new cooling idea i built on my friends comp. I insulate the case with foam insulation and plugged all the holes...i then bolted a window box air conditioning unit on the side. the comp requires not extra fans cuz the ac circulates the air well for such a small space and it keeps the processor at 30 C no fan just a heat sync.. it a 3.4ghz over clocked to 4.5. We hope to over clock it more since the temps are still so low. the AC kicks in for about 2 min every hour or so. we rewired it slightly so it blower always recirculates the air. it works pretty well if you wan an ice cold case. I JUST LOST 287 gigs entertainment! F

I don't really recommand doing that because if the AC were direct blowing into the heatsink and to the motherboard, it may contain moister which will short out the circuits in the motherboard... Thats why they use a robber tube and a special "connector" attach to the CPU so no moister will escape from the compressed cold air... Those are vapochills.... Upto this point, I still prefer air cooling because it is the simpliest and cheapest of all... If you had a good 3.4Ghz chip, going to 4.5Ghz isn't that difficult with air cooling.. I saw a guy had a Pentium 631 65nm Presler core o/c from 3.0Ghz to 4.5Ghz air w/ some ninja cooler and modified chipset cooler... His temperature stay below 49C full load... TMP-Man Asus P5P800-SE P4 506 @ 4100Mhz 1.525v Thermaltake CLP0024 w/ 2000RPM FAN + AS5 1GB Corsair 2-3-3-5 DDR400 40GB 5400RPM/120GB 7200RPM HD Radoen 9500 mod 9700 @ 375/600 CHS+RHS

yea, the liquid thing was a concern, i though it might be a problem, but we have a humidity meter in there and surprisingly it still shows slightly lets then out side the case. It really dry...we tried it for a while before installing vital electronics in the case. i thought it would be difficult with that much heat to, but the ac really works well, and the insulation keeps it cold. max was 35C while we were gaming on it...and the ac is not even maxed out..were gonna try and clock it to 5.0 or 5.5 if we can keep these temps stable. My friend's dad works for best buy and had some processors they couldn't sell, so basically we had a dirt cheep 3.4 that we figure we will either destroy or build a kick ass fast system. gota bring the rest of the comp up to spec thoug, only a 32 meg vid card and 256 ram...20 gig hd lol..needs some supping up. a shame to run slow stuff with a now 4.7 ghz proccesor. I JUST LOST 287 gigs entertainment!

It's nice to see some one experiementing & pushing the limit, but obviously the setup isn't very practical. How about listing all the specs of this system....what speed is the RAM running at when then CPU bus cranked up to 265-275MHz & beyond...is it still lagging way behind at 200MHz? What motherboard & power supply are you using? And I'm curious as to why you're running a heatsink only...I would think you'd want to keep the fan on anyway? BTW, I see for your specs you have a Centrino listed. A Centrino is not a CPU, it's the name of a technology package.

If you want to overclock based on FSB, you may want to consider to modify your chipset cooler so it can handle higher FSB... Having only 256mb RAM, 32mb video card and 20GB hard drive, what is the point to overclock the CPU? If you try to play games on it, then you should be considering a better graphic card, more RAM and a bigger hard drive for storage... Otherwise, you will not beneifit much for having 4.5Ghz overclocked cpu + 256mb RAM + 32mb video card + 20gb hard drive and run it under win xp... What kind of games can you play on that 4.5G machine? TMP-Man Asus P5P800-SE P4 506 @ 4100Mhz 1.525v Thermaltake CLP0024 w/ 2000RPM FAN + AS5 1GB Corsair 2-3-3-5 DDR400 40GB 5400RPM/120GB 7200RPM HD Radoen 9500 mod 9700 @ 375/600 CHS+RHS

The air gives up moisture in the form of condensation as it passes across the evaporator coil, thereby lowering the relative humidity of the air. So the conditioned air inside the case would be lower in humidity than the unconditioned air. Still in all, its sounds like overkill to me.

Hey, how about posting a picture of this thing?