Processor Idling too hot

I just finished building my own computer and am having some problems with the CPU temperature. The motherboard is a Asus P5N-D and the processor is a Q9300 and am using the Corsair A50 as my heat sink. I haven't done any overclocking and the temperature reported by the bios after the computer has been left off overnight is around 48C.

I first assumed I hadn't applied the thermal grease correctly so I took out the processor, wiped off the old thermal grease and applied a pea sized drop which I then spread around evenly in a very thin layer. Any ideas on why this is happening and a way to fix it. I ran a program which maxed out all 4 cores of my processor and the average temperature reported by Real Temp after about a minute was ~ 60C. I've read this processor can reach up to 71C but still this makes me rather uncomfortable. Any suggestions on how to fix this are greatly appreciated.

The temperature you listed would be considered normal with the H50. The H50 is a low end watercooling system, maybe just slightly better than high end air coolers.

Make sure you have enough air flow in your case, add more fans if you dont. Maybe add a 2nd fan to the radiator on the H50 to have a push/pull combo, that will lower temps.

A50 cooler, not H50









The most common cooling issue (that I've seen) is improper air flow. Make sure your fans are set up in the correct configuration.

You want to suck in new cool air from the bottom front of the case, and exhaust the heated air out of the rear top; the classic pull-push configuration.

This will keep a constant flow of fresh cool air flowing through the case, and ultimately through the CPU cooler otherwise you'll just be circulating warm air around in the case, which obviously isn't going to cool anything down.

Well I believe the air flow is ok because the temp1 and temp2 temperatures reported by speed fan are around 30-40C. I know speed fan isn't always correct but it's CPU temps seem to match up fairly well if not exactly with Real Temps.

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Check the heat sink condition.

Apply a little more thermal grease and restore your bios to its default setting and check the fan.

Thermal grease is extremely important but not to much or to little. To little and it will not allow thermal transfer from the CPU top to the heatsink due to the gaps and bare metal contact. Too much and it will hinder the thermal transfer from the CPU top to the heatsink.

The purpose of thermal paste is to fill into the microscopic grooves on both surfaces to allow a full surface contact area and allow thermal heat trasnfer through the metals using a minimal paste thickness so as not to become a hinderance to the heat transfer process.