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Base stress test - CPU hitting 92C

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Sep 6, 2013
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Motherboard
Z87MX-D3H
CPU
Intel i7-4770K
Graphics
EVGA GTX 760
Mac
  1. Mac Pro
Classic Mac
  1. Xserve
Mobile Phone
  1. Android
Hey everyone. First post here on Tonymac!

I just finished my first Hackintosh last night (this site was extremely helpful of course) and everything is running great! I dual booted this system, so I have Win 8.1 running on an SSD partition, which is where I'm running my stress tests from.

..................................................

I got home today and started up Prime95 to do a base burn test using the Intel Extreme Tuning Utility to monitor system stats. I am running the base clock of 3.5GHz with turbo up to 3.9GHz. I did a 10 minute test using the Blended Tests option in Prime95, and my CPU shot up to 90-something degrees after only a few minutes.

Based on what I've read here and elsewhere, a comfortable temp is somewhere around 70C, and not much above. This is somewhat troublesome, as I haven't touched my base clock at all, and I plan to be doing quite a bit of Cinema 4D rendering with this rig, which will pin the CPU for many hours at a time.

I'm further befuddled because I installed a Corsair H60 liquid cooler specifically so that I could overclock.

My instinct tells me that my heatsink / fans aren't working properly, so here's how I have my cooling physically set up: (all fans are 120mm)

..................................................

Lead from pump connected to CPU_FAN header on motherboard
Radiator mounted in the front of the case with fan in-between (pulling air into case). Lead from this fan connected to SYS_FAN2 header.
One stock Coolermaster case fan pulling air into case from the back. Lead connected to SYS_FAN1 header.
One stock Coolermaster case fan pulling air in from left side of case. Lead connected to SYS_FAN3 header.
One Noctua NF-P12 Fan blowing air out from the top of the case. Lead connected to CPU_OPT header.

All of the headers are 4 pin, and I have my leads connected to the "right" 3 pins. Don't know if that makes a difference.

..................................................

One thing I've noticed is that the fans don't seem to vary RPM very much, and they don't get very loud at all, even during the stress test. I also never hear my pump (I don't know if I should expect to?) Am I missing a BIOS setting somewhere that allows the fans to vary speed depending on CPU load or something? Just a shot in the dark with that one.

Any suggestions are welcome. In the mean time, I'm going to try messing around with the pump power lead and see if I can get anything to change, and I'll comb through the BIOS again to see if I can tweak any settings. Thanks in advance!
 
Hey everyone. First post here on Tonymac!

I just finished my first Hackintosh last night (this site was extremely helpful of course) and everything is running great! I dual booted this system, so I have Win 8.1 running on an SSD partition, which is where I'm running my stress tests from.

..................................................

I got home today and started up Prime95 to do a base burn test using the Intel Extreme Tuning Utility to monitor system stats. I am running the base clock of 3.5GHz with turbo up to 3.9GHz. I did a 10 minute test using the Blended Tests option in Prime95, and my CPU shot up to 90-something degrees after only a few minutes.

Based on what I've read here and elsewhere, a comfortable temp is somewhere around 70C, and not much above. This is somewhat troublesome, as I haven't touched my base clock at all, and I plan to be doing quite a bit of Cinema 4D rendering with this rig, which will pin the CPU for many hours at a time.

I'm further befuddled because I installed a Corsair H60 liquid cooler specifically so that I could overclock.

My instinct tells me that my heatsink / fans aren't working properly, so here's how I have my cooling physically set up: (all fans are 120mm)

..................................................

Lead from pump connected to CPU_FAN header on motherboard
Radiator mounted in the front of the case with fan in-between (pulling air into case). Lead from this fan connected to SYS_FAN2 header.
One stock Coolermaster case fan pulling air into case from the back. Lead connected to SYS_FAN1 header.
One stock Coolermaster case fan pulling air in from left side of case. Lead connected to SYS_FAN3 header.
One Noctua NF-P12 Fan blowing air out from the top of the case. Lead connected to CPU_OPT header.

All of the headers are 4 pin, and I have my leads connected to the "right" 3 pins. Don't know if that makes a difference.

..................................................

One thing I've noticed is that the fans don't seem to vary RPM very much, and they don't get very loud at all, even during the stress test. I also never hear my pump (I don't know if I should expect to?) Am I missing a BIOS setting somewhere that allows the fans to vary speed depending on CPU load or something? Just a shot in the dark with that one.

Any suggestions are welcome. In the mean time, I'm going to try messing around with the pump power lead and see if I can get anything to change, and I'll comb through the BIOS again to see if I can tweak any settings. Thanks in advance!

Check for an air gap between your CPU and the heat sink.

My guess is that you are not getting proper contact for the dissipation of heat to be adequate. No way you should be hitting 90C - I know for a fact that this liquid cooler has issues mounting correctly depending on the board used. That is why I went with a Noctua air cooler - and even on full load I don't get past 52C. The liquid cooler heat sink on my last build didn't get close enough to the CPU so I had do get some screws that pushed the copper heat sink on top of the CPUw/ thermal paste. Temps went down 44C just because of contact issue.

Hope this helps.
 
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