Overclock.net › Forums › Cooling › Specialized Cooling › Peltiers / TEC › TEC between the cpu and heatsink
New Posts  All Forums:Forum Nav:

TEC between the cpu and heatsink

post #1 of 6
Thread Starter 
I would imagine this has been asked and answered many times but no simple browsing or search of the forum gave me my answers.

Would it be possible to buy a cheap TEC from say eBay, power it with a molex connector, and stick it between the cpu and heatsink of an air cooled computer?

If not what's the problem?

I don't care how efficient it would be but rather just that it worked. I would consider a drop of a few degrees a success.

There's so much too learn. I've just spent hours reading about cpu cooling from air, to water, to modding an air conditioner, to lapping a heatsink, to applying thermal paste. ^.^

David
post #2 of 6
Surely you'd put the tec on the plate above the CPU cooler block. As, if I remember right, the topside of a TEC is warm/hot.
Clevo P650RP6-G
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 6700HQ nVidia GTX1060 6GB Kingston HyperX Impact 2133MHZ 16GB INTEL 600p 128GB 
Hard DriveOS
Samsung 850 EVO 1TB Windows 10 Pro 64 
  hide details  
Reply
Clevo P650RP6-G
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 6700HQ nVidia GTX1060 6GB Kingston HyperX Impact 2133MHZ 16GB INTEL 600p 128GB 
Hard DriveOS
Samsung 850 EVO 1TB Windows 10 Pro 64 
  hide details  
Reply
post #3 of 6
It may work aslong as The TEC is powerful enough to be able to remove the heat quick enough. It's likely you'd see a lower idle temperature but a higher Load temperature.

The other thing it that would want to try and ensure the whole of the Tec's hot side has good cooling, a HDT cooler may not work well as a TEC cooler.
The daily driver
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.8GHz (Under water) Gigabyte Z77X-UP7 MSI TwinFrozr GTX680 X2 SLi (Under water) AVEXIR Core 16GB 2400MHz 
Hard DriveCoolingOSMonitor
2 x Crucial M500 240GB (RAID 0)  Custom Watercooling loop Windows 8 64Bit Dell 24" WLED 
KeyboardPowerCaseMouse
Corsair Vengeance K70 RGB Seasonic P-1000 Corsair 900D Logitech MX Master 
Mouse PadAudio
Corsair MM200 extended Logitech G933 + Large custom sound system 
  hide details  
Reply
The daily driver
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.8GHz (Under water) Gigabyte Z77X-UP7 MSI TwinFrozr GTX680 X2 SLi (Under water) AVEXIR Core 16GB 2400MHz 
Hard DriveCoolingOSMonitor
2 x Crucial M500 240GB (RAID 0)  Custom Watercooling loop Windows 8 64Bit Dell 24" WLED 
KeyboardPowerCaseMouse
Corsair Vengeance K70 RGB Seasonic P-1000 Corsair 900D Logitech MX Master 
Mouse PadAudio
Corsair MM200 extended Logitech G933 + Large custom sound system 
  hide details  
Reply
post #4 of 6
Quote:
Originally Posted by paid2kill View Post
I would imagine this has been asked and answered many times but no simple browsing or search of the forum gave me my answers.

Would it be possible to buy a cheap TEC from say eBay, power it with a molex connector, and stick it between the cpu and heatsink of an air cooled computer?

If not what's the problem?

I don't care how efficient it would be but rather just that it worked. I would consider a drop of a few degrees a success.

There's so much too learn. I've just spent hours reading about cpu cooling from air, to water, to modding an air conditioner, to lapping a heatsink, to applying thermal paste. ^.^

David
It won't work....
1) The TEC will have to move heat faster than your CPU is generating it. I assuming your CPU is at least 100w. That means you need a TEC to move at least 100w to break even.... anything less and you will be insulating the CPU to cause higher temperatures. If you're overclocking, you can expect to see heatloads in the 150-250 range.
2) Your heatsink will need to be able to cope with the heat of the CPU and the waste heat of the TEC. If you had 100w CPU, your HS will need to be able to handle something like 170w. If it cannot, TEC performance suffers and will lead to feedback loop of increase CPU temps.
3) The 16-18AWG wire of a single Molex plug may not be capable of that much power safely.
4) Your PSU has to be able to adjust voltage since TEC power/performance curve varies.
5) You will need a metal plate between the CPU and TEC since TEC with enough cooling power are bigger than CPU IHS. In addition, the heat of the CPU is centralized while the TEC cooling is across the entire surface.
Edited by DuckieHo - 9/22/11 at 7:46am
Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
  hide details  
Reply
Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
  hide details  
Reply
post #5 of 6
Air cooling a TEC will never work out on your average processor. Now with an Atom or other low-wattage processor it may be possible; but I don't know what kind of heatsink could cover the entire hot side and deal with the heat it generates effectively.
 
ThinkPad W510
(12 items)
 
The Arkbird
(14 items)
 
CPUGraphicsRAMHard Drive
i7 3840QM Quadro K2000M 4x8gb Intel 525 Series 240gb mSATA 
Optical DriveCoolingOSMonitor
Tray-load DVD Factory Windows 7 Pro 1080P "Ultrasharp" panel 
KeyboardPowerCase
Integrated Big 'ol brick M4700 chassis 
CPUMotherboardGraphicsRAM
i7 820QM 4318-CTO Quadro FX 880M 4x4gb 
Hard DriveOptical DriveCoolingOS
X-25M G2 DVD Stock Arch x64 
MonitorKeyboardPowerMouse
1080P touch screen IPS Clicky Brick Adapter UltraNav 
CPUMotherboardGraphicsRAM
4x Xeon E7440s HP DL580 G3 Motherboard Rev. 1.1 ATi Rage XL Samsung ECC DDR2 
Hard DriveOptical DriveCoolingOS
15K HP Ultra320 SCSI DVD Burner Bare Heatsinks + Chassis Airflow The Ever-Changing Distro... 
MonitorPowerCase
Only For Diagnostics.. 2x1300w (Redundant, Delta OEM) HP 4U Rackmount 
  hide details  
Reply
 
ThinkPad W510
(12 items)
 
The Arkbird
(14 items)
 
CPUGraphicsRAMHard Drive
i7 3840QM Quadro K2000M 4x8gb Intel 525 Series 240gb mSATA 
Optical DriveCoolingOSMonitor
Tray-load DVD Factory Windows 7 Pro 1080P "Ultrasharp" panel 
KeyboardPowerCase
Integrated Big 'ol brick M4700 chassis 
CPUMotherboardGraphicsRAM
i7 820QM 4318-CTO Quadro FX 880M 4x4gb 
Hard DriveOptical DriveCoolingOS
X-25M G2 DVD Stock Arch x64 
MonitorKeyboardPowerMouse
1080P touch screen IPS Clicky Brick Adapter UltraNav 
CPUMotherboardGraphicsRAM
4x Xeon E7440s HP DL580 G3 Motherboard Rev. 1.1 ATi Rage XL Samsung ECC DDR2 
Hard DriveOptical DriveCoolingOS
15K HP Ultra320 SCSI DVD Burner Bare Heatsinks + Chassis Airflow The Ever-Changing Distro... 
MonitorPowerCase
Only For Diagnostics.. 2x1300w (Redundant, Delta OEM) HP 4U Rackmount 
  hide details  
Reply
post #6 of 6
Thread Starter 
Thanks for the answers. For what it's worth I'm specifically talking about a Core-Contact Freezer as a heatsink and a E5800 65w processor.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Peltiers / TEC
Overclock.net › Forums › Cooling › Specialized Cooling › Peltiers / TEC › TEC between the cpu and heatsink