Peltier cooling????

[bobt17]

i see lots of watter and air cooling but nothing about peltier cooling. anyway i just baught a peltier cooling system on ebay and want to know if this is a good effective way of cooling my cpu or not?


here is a link to wut i baught http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1305540660&r=0&t=0&showTutorial=0&ed=1007362201&indexURL=0&rd=1

[ButcherUK]

If you value your athlon don't put that thing on it! For athlon cooling you need water cooling and a high powered peltier(120W+). That looks like around a 70W peltier with what is frankly a weakass HSF on it, it'd be adequate for a p3 / celeron but only just.

[muddocktor]

There is no way that will work on the athlon rig in your sig. By cross checking the amp rating on that 1 you bought with the dangerden site, it looks like the peltier is a 80 watt peltier, maximum, which will work on a P3 but not a t-bird. As far as the hsf is concerned, it would make a good cooler for a K6-2 or K6-3 processor, nothing faster, without the peltier. There is no way that it will be able to dissipate the heat of even a 80 watt peltier by itself, let alone the pelt and a cpu

Please do not try this setup like it is! You will burn up your processor!

One saving grace though; you paid less than the 80 watt pelt costs by itself at dangerden.
Please use the search feature here and look what sizes the peltier elements people are using and the methods that they are using to cool everything down. Basically, you cannot use air-cooling with a peltier on an athlon system, they put out too much heat. You have to use watercooling. You can use air-cooling on a P3 system, but it is hard to do and will be noisy due to the high airflow needed to remove the heat from the heatsink. I hope this keeps you from frying stuff.

[mark]

DO NOT USE THAT PELTIER COOLING KIT!!!

This is taken right from oc.com under problem products;

"Peltier Cooler"
I reviewed this particular Peltier Cooler ("Mushkin Tundra") some time ago and recently it has re-surfaced under generic as well as the Vantec labels. I have not seen a positive review yet for this product and doubt any credible reviewer will find it usable. It does not cool as well as a good air-cooled heatsink; further, I believe it can be downright dangerous, as it get so hot you could burn your fingers on the heatsink. AVOID AT ALL COSTS!
http://www.overclockers.com/tips39/VPelt.jpg

The Problem with this is, the Heatsink Will Not be able to pull all the heat that comes from the peltier, and the cpu. Heck, the fan on the kit you bought only puts out 8.5CFM (THAT IS VERY WEAK!!) Which means it may even Heat-Up the CPU

Not to mention there is no condensation protection, and the contact between hs/f and peltier doesn't look very good.

You have been warned,
mark

[RoadWarrior]

Looking at th picture on eBay, I recognise the hsf assemble less the peltier, because I've got one, got it at a fleamarket when I needed a fan a while back and wasn't being too picky. Anyway, on a K6-2-400 it can't keep it cool enough to be stable in quake or other 3d game for longer than about 10-15 minutes. That's about 40W worth, that that particular hsf combo can't cope with. I know you can let them get a bit hotter on top of a peltier, but it probably ain't gonna shift the nominal 70W or so of your athlon plus whatever below ambient you were hoping for that the peltier is meant to suck in.

Remount the pelt and it might be useful on your second or third system or something. Save the hsf for repairing your aunties compaq with the P200 in it or something.

Road Warrior

[bobt17]

what if i put the peltier with a bigger hsf combo??

[ButcherUK]

Originally posted by bobt17
what if i put the peltier with a bigger hsf combo??

I think the peltier here is a TEDist TB-127-2.0-2.5 / 48 - 76W, 7.6A@16.3V.
Nope, the peltier just isn't big enough for the cpu. It's a 76W peltier on a 70W cpu, that's not going to work. For a couple of numbers, if you got a really high-end air cooler capable of 0.15C/W (say swifty MCX462 plus delta screamer) then with that peltier you'd get about 58C cpu temp. Using the huge HSF on it's own you get 36C cpu temp. If you used a 156W TEC in a similar setup you could get temps of 33C, a lot of effort for a very small drop, this is assuming you could even get air cooling to do 0.15C/W.

[bobt17]

whats a good cooling solution without watter?? and where could i get it useing paypal that is all i can use to pay online

[ButcherUK]

Buy a big (80x80mm form factor - swifty mcx462 and alpha 8045 spring to mind) heatsink and a decent (50cfm+) 80mm fan. As for where... good question ;)

[bobt17]

ok heres wut i just baught
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1305007025

any good reviews on this cooler i should know about???
its got to do better then wut i am running at right now i know that for sure 55 Celcius man thats hot

[bobt17]

bump

[muddocktor]

It might work OK, but it will be loud with that 7000 rpm screamer on there. Be sure to check the base for flatness and lap that sucker if it is rough or has high/low spots in the base. Also, use your thermal paste if you haven't done so before because it makes a significant difference in heat transfer. I find that these Athlon chips are hard to cool because they use so much power; I personally don't buy the cheap hsf units for high end Athlons because it is such a crapshoot. I tend to stick to the premium brands such as Alpha and Swiftech for the high speed AMD procs.

[bobt17]

i'm just looking for the most bang for the buck i can get btw what is lap??? i havent done it b4 so i dont know if someone could explain please it would be a help thanx

[muddocktor]

When you lap the heatsink base you are basically sanding it down smooth on a very flat surface. I use a pane of 1/4" thick glass and tape wet/dry sandpaper to it. I usually start off with 400 grit and rub the base of the heatsink in a figure 8 motion on it. I check it quite often and when it looks like I am starting to see new material across the entire heatsink base I change to 800 grit. After lapping with 800 grit, I will polish it with 1500 grit. After you lap it, be sure to wipe it down well to remove the sand/metal dust left on it. When you get to this point it should be shiny enough to see reflections rather well. I hope this helps you out and it will help get the best and tightest fit between the heatsink and the cpu.

[ButcherUK]

Lapping is best done wet, you get a smoother finish and no dust.

[Intraveinous]

Originally posted by ButcherUK
Lapping is best done wet, you get a smoother finish and no dust.

yeah... I usually use a warm water/ drop of dish soap (like dawn, not the stuff U put in the dishwasher). for the 400-800, then finish up with a sheet of 1200-1500 with a tiny bit of ultra light gear oil and some arctic silver 2. Rinse this with Isopropyl Alcohol or Acetone and buff it dry... Beautiful... :D
Peace
John