s939 Tec adventure.

[ShrimpBrime]

Opteron 146 @3400mhz via Thermal Electric Cooling TEC# 12715 136w cooling capacity.

Specs: s939 DFI LanParty Ultra D
Opty 146 90nm
x1800xt 256mb
Crucial Ballistix Tracer LED DDR500
650w PSU for rig
600w PSU for TEC.

http://valid.canardpc.com/show_oc.php?id=2434916

[Mr.Scott]

More info bro.
Temps?, and how is the cooling on the hot side holding up?

[ShrimpBrime]

Oh yea! Forgot.

Temps where idle at 9c and loaded at 3200mhz hit 33c as a max. AMbient temps are controlled by the Chicago weather. So it did prevent freezing which is ok because I didn't want frozen. AMbient was 85-95f during the after noon shade-sun.

I applied the peltier at a 3300mhz wall. Got me an extra 100mhz

Even though the TEC was not properly powered, It worked well cause' I used a heavy lamp cord to run the available current.

I'm also trying to design a little Ram chiller. The only problem is that these particular TEC's are so hot, they don't cool well on air hsf dissipation.

[ShrimpBrime]

An update:

s754 Sempron 64 3100+
DFI NF4X
x1800XT 256mb
1024MB Corsair DDR - 1x512mb and 2x256mb
650w PSU

-6c at idle and 19c loaded.

http://valid.canardpc.com/show_oc.php?id=2448929

[onewecallgod]

Guessing that's a 40x40 peltier?

[Maurice]

Sweet I miss TEC cooling.

[ShrimpBrime]

Originally Posted by onewecallgod

Guessing that's a 40x40 peltier?

It sure is! The largest TEC model I could find. 136w of cooling power, I discovered these older cpu's don't mind it much. The tec won't handle 1.8v on s754 though... I did try

Originally Posted by Maurice

Sweet I miss TEC cooling.

It's fun. Challenging to say the least.

[Maurice]

Ya, I remember having my 2.4C chip sitting at -4C and 3.6 at load. It was cool.

[FX5200]

I'm assuming that there aren't really any TEC's out there nowadays that'll handle a modern chip?

[onewecallgod]

That might be true for AMD, but the modern iCore Intel chips should be cooler than the old Netburst stuff.

[FX5200]

Aren't they just cooler in relation to performance gains?

[ShrimpBrime]

Originally Posted by FX5200

Aren't they just cooler in relation to performance gains?

Ahh, see the newer chips have more cache as well as faster architecture. BUT, the TDP differs depending on the stepping and voltage along with clock speed.

Clock speed without voltage increase does increase thermal output. What chilling helps to do is eliminate the need for more voltage considering most cpus respond better to a little chilling vs slamming home the voltage.

The main thing I like so far about working with these TECs is that they don't produce so much cold that you can't handle it. What I'm saying is that if a cpu has a cold bug, you can use TECs to the advantage with regulation to prevent freezing. I do this by adding or subtracting voltage.

Most of the Semprons I use are around 65w to 89w. Had some s754 2800+ running 2.9ghz+ today. Even with the near 100f ambient temp. This set up is in my shop which is not air conditioned. Just wish I could get some 65f weather.....

[ShrimpBrime]

Ok I had to give a 2800+ palermo a go. This one went pretty far. Max speed on liquid was about 2900mhz. After applying the TEC, It hit 3089mhz as a max clock and bench WPrime just over 3ghz. This one chugged along pretty good.

http://valid.canardpc.com/show_oc.php?id=2451975