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high cpu temperature

post #1 of 2
Thread Starter 
Hi,

I recently picked up a used PC with the following hardware

Motherboard: Gigabyte X-48-DS4
CPU:Intel Core 2Quad Q9450 2.6Ghz
RAM:8GB(4*2GB) Kingston Hyper X PC2-6400
2 x Sapphire HD 4870 512MB DDR5 in Crossfire
800GB (2 x Seagate 400GB 7200RPM in RAID0 array)
LG DVDRW+/- DL Burner
Coolermaster Real Power 850W Modular PSU
Black Fractal Design XL Server Case
Microsoft Windows Ultimate 64bit Edition

The CPU temperature used to be on 80 degrees C on idle and 100 degrees C on 20% CPU load. The computer used to randomly shutdown.I have applied a new thermal paste ( Arctic -Alumina) and it has brought it down to 70 deg C on idle and 85 deg C on 20% CPU load.( no random shutdowns yet..)

I think this temp is too high on idle considering the PC isn't doing anything, I have taken 2 measurement one from bios and coretemp software inside windows and both show the same temperature reading.

One thing i noticed is core1/core2 temperature sometimes indicates a negative reading of -20C core3/core4 temperature readings shows higher than 90 degree C.

Any ideas what's causing this??
Help much appreciated

Thanks
Mottai
post #2 of 2
Sounds to me like this is a faulty reading from the temperature sensor on the board. Try using HWmonitor to show the readings from other nearby sensors. The socket temperature as opposed to the chip temperature should be shown by HWmonitor and it isn't shown in CoreTemp.

However, having said this the fact it is shutting down suggests it is thermal throttling and then overheating. This could be a result of the faulty sensors, however, it would be worth checking the BIOS to make sure all the voltages are set to default.
 
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CPUMotherboardGraphicsRAM
i5 2500k @ 4.8GHz - 1.38v - 24/7 Gigabyte Z68AP-D3 XFX R7970 Black Edition G.Skill Ripjaws 8GB 
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Seagate 1TB Samsung BluRay Noctua NH-D14 + 3 NF-F12 fans Windows 7 Professional 64bit 
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CPUMotherboardGraphicsRAM
E8400 E0 Gigabyte G31M ES-2L HD 5670 4 GB generic value RAM 
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Budget Build
(9 items)
 
 
CPUMotherboardGraphicsRAM
i5 2500k @ 4.8GHz - 1.38v - 24/7 Gigabyte Z68AP-D3 XFX R7970 Black Edition G.Skill Ripjaws 8GB 
Hard DriveOptical DriveCoolingOS
Seagate 1TB Samsung BluRay Noctua NH-D14 + 3 NF-F12 fans Windows 7 Professional 64bit 
PowerCase
OCZ Fatal1ty 750w Silverstone Raven RV-02-W 
CPUMotherboardGraphicsRAM
E8400 E0 Gigabyte G31M ES-2L HD 5670 4 GB generic value RAM 
Hard DriveCoolingOSPower
Samsung 500GB Scythe Yasya 1000 Windows 7 Professional 64bit Corsair CX430 
Case
Thermaltake 
  hide details  
Reply
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