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Discussion Starter · #1 ·
TEC board needs some excitement:

Recently I am having fun stacking TECs. With my beloved 62mm block (check this previous post) I sandwitched two 62mm 400W Qmax TECs and achieved -60C Dt (cold plate to inlet water) under no load.

Well, the temperature is low enough for me to reach -27C on an idle 3770k, with inlet water temperature of 22C. After I let in some cold winter air, I got -42C on the CPU!! That's hack of low temperature! So I guess it's time to OC a little higher. After some tweaking, this is what I got:

Huge OC:


Test system:
TEC block:


Power supplies:


Water cooling rack:


Picture of the TEC block








After I finish my TEC chiller, it will be a three stage cascaded TEC system and there will be much more OC fun!
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Sweet, so you are going to run a TEC chiller in line with a stacked TEC block? Sounds badass!

Eventually, once I get a new CPU setup, I want to stick a chiller in line with my Arqtik SDD TEC to give it some nice cold water
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This looks truely awesome.

If you want some ideas on an external cooling solutions, I've built an HVAC type system with a phobya 480 rad in a box for the window. Also have a summer version with a massive rad and two 254mm fans. ROG-BOX linky in my sig. The summer version works with the chiller up to 25c outside temperatures.
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Discussion Starter · #5 ·
Quote:
Originally Posted by Rognin View Post

This looks truely awesome.
If you want some ideas on an external cooling solutions, I've built an HVAC type system with a phobya 480 rad in a box for the window. Also have a summer version with a massive rad and two 254mm fans. ROG-BOX linky in my sig. The summer version works with the chiller up to 25c outside temperatures.
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Thanks, Rog! I have seen your awesome build before. The summer version is indeed massive. My dream is to have an out-of-house phase change system as a water chiller, and the in-house solution will be TECs.
 

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Definitely an awesome result. That 3770K clocks really well too... I was only able to hit 5.80GHz on dry ice (~-70°C) with my chip. LN2 helped for 6.3GHz, though
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Discussion Starter · #8 ·
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Originally Posted by xxbassplayerxx View Post

Definitely an awesome result. That 3770K clocks really well too... I was only able to hit 5.80GHz on dry ice (~-70°C) with my chip. LN2 helped for 6.3GHz, though
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Yeah, low temps help a lot on Ivy. I also feel like it's a good chip. I have other 3570Ks and they all only hit 5.40 at -40C.
Cannot wait to have my first try on LN2. My pot is under construction:D
 

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Great work foxrena, ultra low temps and superb OC !
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ooh man , when i see a TEC post ... i wish i could join u guys , with all the custom tec blocks ...

speaking of custom tec blocks :

did u just drew those channels and hope for the best or is there a flow analisis for ? how deep are the "cuts" 3 mm ?
 

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Discussion Starter · #12 ·
Quote:
Originally Posted by yoi View Post

ooh man , when i see a TEC post ... i wish i could join u guys , with all the custom tec blocks ...
speaking of custom tec blocks :
did u just drew those channels and hope for the best or is there a flow analisis for ? how deep are the "cuts" 3 mm ?
To make a nice block you need a CNC mill
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The slots are about 0.8mm wide and 2.5mm deep. The channel design is just based on previous tests and some 2D simulation. Not strictly optimized but shouldn't be far. Copper is difficult to cut and I have to consider the time and effort in fabrication when I make the design.
 

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Quote:
Originally Posted by foxrena View Post

To make a nice block you need a CNC mill
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The slots are about 0.8mm wide and 2.5mm deep. The channel design is just based on previous tests and some 2D simulation. Not strictly optimized but shouldn't be far. Copper is difficult to cut and I have to consider the time and effort in fabrication when I make the design.
Man your block is sexy & shiny!!
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Quote:
Originally Posted by foxrena View Post

Picture of the TEC block








After I finish my TEC chiller, it will be a three stage cascaded TEC system and there will be much more OC fun!
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That waterblock looks pretty amazing!
 

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Discussion Starter · #17 ·
Quote:
Originally Posted by derickwm View Post

What kind of temps are you getting with warm weather? Load temp with that kind of OC? Can't wait to see what else you do
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IIRC, in warm condition (~25C inlet water temperature) with cascaded TECs, the cold plate reaches below -35C with no load and -28C on an idle CPU. I didn't test the load temperature with cascade TECs, because it is not intended to take a big thermal load.

However, I have tested the load temperature with a single TEC. The cold plate was around 0C with 25C water. That's on a 5.1GHz 3770K running Prime95
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. You can see the result here: http://www.overclock.net/t/1265022/ivy-bridge-rocks-5-1ghz-prime95-3770k-and-more/0_100
 

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Awesome ! Great results, esp. for a custom block you had made for yourself ! What sort of cooling do you have for the hot side ?
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Discussion Starter · #20 ·
Quote:
Originally Posted by Schmuckley View Post

That is very nice!
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I can has 1?
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Quote:
Originally Posted by gdesmo View Post

Awesome ! Great results, esp. for a custom block you had made for yourself ! What sort of cooling do you have for the hot side ?
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Thanks guys! For hot side cooling I have a "water rack" with 1 triple, 2 quads and a D5 pump (see the picture in OP). Not as good as yours gdesmo!
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It's really fun testing it. I am also seriously thinking about making these blocks available. Need more free time though...
 
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