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New rig with H80, high temps

post #1 of 9
Thread Starter 
I just put together a new build that is using a Corsair H80 for CPU cooling. I booted up into BIOS and was glad to see all my parts were working and I was good to go. Then I saw my CPU temperature sitting at 47 C (ambient ~24C) and was a little concerned. The fans are spinning and the BIOS shows the CPU fan speed at 2000-2100 RPM (which I think means the pump is, indeed, working).

Any troubleshooting I can do on this before I disassemble and go again, or have I just seated the heatsink this badly?
TGC-2007
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TGC-2007
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post #2 of 9
The pump aint as fast as 2000 rpm i dont think., open speedfan and see what rpms it reads out for other headers.

2000rpms will be the fan I believe.
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^3
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post #3 of 9
That would be my advice, Take it off put some new tim and re-seat it.
post #4 of 9
Before re-doing TIM, load your PC to see what you get.
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Níðhöggr
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post #5 of 9
Quote:
Originally Posted by Nick911 View Post
Before re-doing TIM, load your PC to see what you get.
Yeah don't worry about it at this stage. BIOS temps are nearly always higher than those at idle in Windows.
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The Oracle
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post #6 of 9
Like everyone said I would check in windows first buy maybe you either applied paste wrong or pushed it all on one side
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post #7 of 9
Thread Starter 
Been a bit because I've been messing with it. I reseated it a couple of times to no change in the BIOS temperature. The TIM looked pretty evenly spread on each occasion (first try was the stock Corsair which I read was good TIM, two others with Shin-etsu G751).

I went and ahead installed Windows based on your all's advice. I'm currently monitoring with the ASUS AI Suite sensor tool while I get the drivers and other updates I need. The AI Suite is showing 36C at idle. Still not good, but at least hopefully I can get things up and running without worrying about damaging my processor.

The fans are spinning and I went ahead and turned it up to max speed (via the button on the heatsink) just because I could. It's been on for ~1 hour installing Windows and the such and the tubing/radiator don't feel warm to the touch, though I assume it is working to some extent or my temps would probably be even higher. Haven't yet put the computer online (will have to move it for hardwire) so I haven't installed any of the normal monitoring software (speedfan, real temp) yet.

Thanks for the advice so far, hopefully I can figure this out and get my idle temps down closer to ambient.
TGC-2007
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Core 2 Duo E6300 ASUS P5NSLI EVGA 8800GTS 640MB 4GB Corsair XMS2 DDR2 800Mhz 
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Antec P180B 
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TGC-2007
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320GB Seagate Barracuda 7200.10 Windows 7 Ultimate 2x ASUS 23.6" 1080P LCD FSP Group FX700-GLN 
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Antec P180B 
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post #8 of 9
The pump runs at ~2000 RPM, so that part is correct.

I don't remember which motherboards it was, but there were a couple of motherboards where the copper plate would end up touching the capacitors (the cap things) that surround the CPU, so the copper plate would not be fully touching the CPU.
post #9 of 9
Thread Starter 
I got everything set up and decided to put the CPU under load to see how it would perform.

Here's the rig specs before I go any further:

Case: Corsair 650D
CPU: Core i5-2500k
CPU Cooler: Corsair H80 (Shin-etsu G751 TIM, exhaust Push/pull)
MOBO: ASUS P8P67 Pro Rev. 3.1
GPU: eVGA GTX570 Classified
RAM: 16GB Corsair Vengeance 1600Mhz
SSD: Crucial m4 128GB
HDD: Samsung Spinpoint F3 1TB

I set the 650D up with the stock 200m front intake, 120mm top intake (I could put the stock 200m top intake back in if it would help), and the Corsair H80's radiator/fans as the lone 120mm exhaust in the rear. The CPU is still at stock settings. CPU-Z is showing 3.7Ghz Turbo'd and ~1.296V.

I'm seeing temperatures of 33 - 37C at idle in various monitoring programs (realtemp, coretemp, and speedfan). These seem high as ambient in the house is ~25C, but do make me think the unit is functioning properly and I've made a mistake somewhere.

I decided to test at stock clocks for ~4 hours in Prime95 to see how the unit did under load. After 4 hours, the cores were at 53, 56, 58, 58. (screenshot attached, I opened realtemp late, but coretemp & speedfan were active throughout--note: coretemp shows 98C maximums and occasionally "jumped" to those temps on each core which I believe was in error, which is one reason I dl'd and opened realtemp as well).

These temps seem a little high (are they?) for a stress test at stock settings, but the fact that they aren't higher makes me think my unit is functioning properly still.

Does the ~5 degree difference in core 0 and core 3 suggest my heatsink is still not making solid contact? Is my fan set-up in my case (with the radiator as the only exhaust) bad? I originally wanted to make the radiator the top intake, but the fan/radiator/fan proved too thick to fit between the roof and the mobo.

Any help/input lowering my temps is appreciated.
TGC-2007
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Duo E6300 ASUS P5NSLI EVGA 8800GTS 640MB 4GB Corsair XMS2 DDR2 800Mhz 
Hard DriveOSMonitorPower
320GB Seagate Barracuda 7200.10 Windows 7 Ultimate 2x ASUS 23.6" 1080P LCD FSP Group FX700-GLN 
Case
Antec P180B 
  hide details  
Reply
TGC-2007
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Duo E6300 ASUS P5NSLI EVGA 8800GTS 640MB 4GB Corsair XMS2 DDR2 800Mhz 
Hard DriveOSMonitorPower
320GB Seagate Barracuda 7200.10 Windows 7 Ultimate 2x ASUS 23.6" 1080P LCD FSP Group FX700-GLN 
Case
Antec P180B 
  hide details  
Reply
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