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Why aren't there more CPU blocks that use the Peltier Effect? - Page 3

post #21 of 82
Thread Starter 
Quote:
Originally Posted by DEW21689 View Post

While an interesting concept I don't think it would be for every system. For example my current system while idle is pulling 83W and under max load it pulls somewhere around 260-280W I forget exactly (see signature rig) for my system a TEC cooler just wouldn't be worth it if you ask me. However now I want to figure out at what point a system puts out enough heat that a TEC cooler becomes a better option than adding more fans, stronger pumps etc.... Time to bust out my insanely power hungry and hot i7-920 for science!!

Gosh, I idle around 200-220W. Haswell-E can't come soon enough.
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post #22 of 82
Quote:
Originally Posted by pokerapar88 View Post

Exactly, nevermind condensation, you also have to think that TEC coolers are always working and producing the same amount of heat on the hot side ALL THE TIME, which means your cooling solution (be it radiators or whatever) will be doing 100% even if the PC is IDLE !

This is only true for a TEC connected directly to a power supply. My TEC doesn't break ~30's% Duty Cycle during normal use. Idle holds the cold plate at 10c at around 28%, and uses less power then adding another GPU would.
Edited by Puck - 9/4/13 at 10:53am
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post #23 of 82
Quote:
Originally Posted by Artikbot View Post

On the other side, besides a cooling loop failure, the TEC doesn't need to be refilled, poses no possible risk at all to your health (except the hot loop stopping working, blowing a gasket and spraying steam XD), and with a large enough radiator surface it isn't any louder than your average water loop.

But electricity-wise, TEC cooling isn't worth it, at all.

Not true, with a controller a TEC block can use very low power (40-80W) while keeping the CPU around zero at idle or normal use (surfing, office...).
Aside from completely silent, the real advantage of a TEC system is to be able to adjust the cooling power and control temperature very precisely and quickly. This allows it to avoid condensation, too. It's such a fun feature that no other cooling solution can do.
The inefficient problem is associate with running at higher Delta T (>30C), and only comes when CPU is fully loaded. If you have a controller and don't load your CPU 24/7, it's not a concern.
Edited by foxrena - 9/4/13 at 11:36am
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post #24 of 82
Quote:
Originally Posted by foxrena View Post

Not true, with a controller a TEC block can use very low power (40-80W) while keeping the CPU around zero at idle or normal use (surfing, office...).
Aside from completely silent, the real advantage of a TEC system is to be able to adjust the cooling power and control temperature very precisely and quickly. This allows it to avoid condensation, too. It's such a fun feature that no other cooling solution can do.
The inefficient problem is associate with running at higher Delta T (>30C), and only comes when CPU is fully loaded. If you have a controller and don't load your CPU 24/7, it's not a concern.

A TEC using 40W won't cool down a Pentium 3. Fact.
   
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post #25 of 82
Thread Starter 
Quote:
Originally Posted by Artikbot View Post

A TEC using 40W won't cool down a Pentium 3. Fact.

At an efficiency of 50% A TEC using 50W will be able to cool down an idle 4770K. Do the math yourself if you don't believe me.
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post #26 of 82
Quote:
Originally Posted by Artikbot View Post

A TEC using 40W won't cool down a Pentium 3. Fact.

The TEC I used has Qmax of 500W and my controller can continuously adjust the DC voltage supply to it.
When 4770K is idle (less than 20W of heat load), the TEC only requires less than 3V and 3A (less than 10W) to keep it under 20C, and about 50W to keep it at zero.
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post #27 of 82
Quote:
Originally Posted by Artikbot View Post

A TEC using 40W won't cool down a Pentium 3. Fact.

Did you miss the "at idle or normal use" part?
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post #28 of 82
Quote:
Originally Posted by foxrena View Post

The TEC I used has Qmax of 500W and my controller can continuously adjust the DC voltage supply to it.
When 4770K is idle (less than 20W of heat load), the TEC only requires less than 3V and 3A (less than 10W) to keep it under 20C, and about 50W to keep it at zero.

Seeing your cooling loop could cool down a racing car engine, the Peltier is barely lifting a finger, and merely acting as a bond. At 20ºC I bet your dT isn't even 10ºC.

Quote:
Originally Posted by Puck View Post

Did you miss the "at idle or normal use" part?

I did. Apologies!
Edited by Artikbot - 9/4/13 at 11:44pm
   
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post #29 of 82
Quote:
Originally Posted by Artikbot View Post

Seeing your cooling loop could cool down a racing car engine, the Peltier is barely lifting a finger, and merely acting as a bond. At 20ºC I bet your dT isn't even 10ºC.

LOL there are much more insane water cooling setup out there. Rad deals are quite easy to find on marketplace. Two quad and a triple are what I am using. Normally only three slow speed fans on the triple are running and when water temp raises above 2C over ambient the two quads will kick in.

You are right at 20C dT (hot side to cold side) is less than 10C. What we want to achieve is to stay in the efficient range of the TEC. At 0C it's a significant dT but still the TEC is working in its efficient range. Generally above 30C dT it won't be as efficient.

Bong at its best cools to the dew point. Same effect and much stable results can be achieved using dew temperature control mode with a TEC. That's the lowest possible temp one can get without insulation.
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post #30 of 82
Thread Starter 
Quote:
Originally Posted by foxrena View Post

LOL there are much more insane water cooling setup out there. Rad deals are quite easy to find on marketplace. Two quad and a triple are what I am using. Normally only three slow speed fans on the triple are running and when water temp raises above 2C over ambient the two quads will kick in.

Oh that's awesome. I've got 2 quads and 2 doubles with all 1050 GT fans running at the same time. I should get more automated fan control system varying with temperature water temps. rolleyes.gif
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Hydra TH10A
(15 items)
 
Nova Vault
(5 items)
 
 
CPUMotherboardGraphicsRAM
5960x Rampage V Extreme 3-Way SLI GTX 980 Ti Hydro Copper 16 GB Dominator Platinum 
Hard DriveCoolingCoolingCooling
480GB Intel 730 SSD Raid 0 x4 Custom Loop 4x 480 Alphacool Radiators Aquacomputer Aqualis 
MonitorKeyboardPowerCase
Acer B326HK Razer Black Widow 2014 Corsair AX1500i  Case Labs TH10A 
MouseMouse PadAudio
Razer Naga 2014 Megasoma 2 Creative ZxR 
CPUMotherboardRAMHard Drive
Xeon D-1541 Supermicro X10SDV-TLN4F 128GB Crucial DDR4 2133 ECC 10x WD Red 4TB  
Case
Caselabs Nova  
CPUGraphicsRAMHard Drive
2.9 Ghz Radeon Pro 560 4GB 16 GB 1TB SSD 
OSMonitor
OS 10.11 15 Inch Retina 2880x1800 
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Overclock.net › Forums › Cooling › Specialized Cooling › Peltiers / TEC › Why aren't there more CPU blocks that use the Peltier Effect?