low air temps? air or liquid

[theopetro]

k heres the plan...... i decided my comp is going to need alot of cooling because ive waited long enough to OC this thing. my problem however is what is better for the $ air or liquid. whatever i go with i will be constructing everything myself......well just about everything. ive got some neat ideas for an air cooled heatsink but i was wondering how low the temps will really go with air???

what are some of your lowest temps on air???

now with liquid id build the whole thing so all i would need to pay for would be the pump and the Cu (im sure ive got some plastic tubing laying around). has anyone built their liquid cooling setup or have any hints on stuff to watch out for? the liquid will be run through a coil in a freezer type thing so i need some ideas for liquids that arnt to viscous at low temps and that can stay liquids up untill like -15C

[shadowbreaker513]

With no cpu overclocking I get an idle CPU temp of about 80F and a case temp at about 68F-75F on air cooling. With a 200Mhz overclock the temps only went up by about 3F-5F. Right now at full folding my CPU temp is hovering around 102F, and my case at about 78F

[FLG]

For water cooling you will need to buy a block, pump, and rad. I recommend swiftech blocks, DD rads, and a swiftech pump. Also unless your doing phase change cooling (which is a heck of alot more complicated) you wont get temps below room temp with water. For water cooling you want to use distilled water and some kind of additive to keep alge and corrosion to a minumum, i run 5% anti-freeze, 15-20% hydrx and the rest is distilled water, then a bit of yellow highliter fluid to give that deep uv green glow.

[theopetro]

only room temp i disagree. attatched is what im thinking . im going to need a liquid that stays pretty fluid at low temps. even if it was at like 30F thatd be awesome. im drafting out the idea for the memory coolers now. i heard that leaving them open is better than the heatsinks because of the thermal paste used to attatch them. soooo im thinken maby either eliminate or cut waaaaaaaay down on the paste and it would work alot better. anyway ill probaly go with all antifreeze. as for buying the blocks im going to make them i think. cant be too hard right? owell itll be an adventure atleast. any tips though on stuff to stay away from or like weight issues... especially w/ the vid card. condensation issues?

[FLG]

Whats run through a freezer is freon, using it tool cool a comp is phase change cooling. Phase change requires, a compressor, condensor, copper tubing, and a very good knowlege of phase change cooling. Any computer cooled with water and a radiator (it can be the biggest radiator in the world) wont go below ambient air temps.

And i wouldent jump into phase change cooling just yet before doing water cooling, phase change is pretty risky and takes up alot of space. Maybe go with a pelt, which will get you below ambient.

Also you cant go with all anti-freeze because antifreeze isnt a good conductor of heat, you only want very little to keep alge from forming.

edit again: making a block isnt to hard, you can use a copper cap from a pipe and some pieces of copper for making channels in it, then a arcrylic cover over it. But preformance will be better with a pre-made one.

[theopetro]

thankyou vary much flg i really appreciate it. would it be worth cooling the memory? i mean i know it shuold be cooled for OCing but will it affect preformance that much? they are going to be pretty hard to build. as for the blocks what are some good ones to get...do it w/ cost as no option just not gold ones.

[MaxRat]

Zip file says it's empty....

I would think if you took some copper line and made a coil and modded it into a freezer ( drilling 2 holes in the freezer for the lines to portrude) then run you lines off of that to a pump and your pc you'll be ok ...I would use an insulative rap from the freezer to the pc on all lines

Your going to want good case airflow to stop condensation... No air and you'll have it....We did this once to cool a fresh water fish tank....

You'll want a regulator on the line so you can reg temps as need be... also a dehumidifier might be of help you'll want to maintain a relative humidity of 30-40 percent to control condensation