Noctua NHU12 with high temps

Sitt

Sitt

Sitt

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Joined
11 Aug 2004
Posts
241
Location
Perth, Western Australia
I have just installed a Noctua NHU 12 but my idle tmps through TAT are reading 45/41 degrees. System is bog standard, no oc, spec E6600 on Asus PH5 DW Deluxe with one intake fan at the front and one intake on the case side panel over the motherboard.
I installed the Artic Silver as per the instructions on the AS site i.e. thin line of AS running top to bottom of heat sink, however, I didn't spread the AS out over the heat sink before installing it - thinking that once the Noctua is in place and secured that this should be enough to spread out the Artic Silver. Is this the correct way of doing it or should I have manually spread it out first before securing the heat sink?
 
Sorry, got another Noctua NF S12 (120mm) fan acting as the exhaust, case is a CoolerMAster Centurian 5 btw.
 
As mentioned previously, my machine has not been overclocked and is pretty much standard. Taken the screenshot below which shows all the voltages etc. Maybe somebody can confirm if the vcore needs dropping?

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Ok, I reseated the HSF on my E6600 which resulted in dropping the temp slightly - now TAT is reading 41/37 degrees. With the side of the case off it drops again by a degree or two (nothing much to shout about).
How much of a difference would the temps be if I stuck on another 120mm Noctua fan to the heat sink?
Any other suggestions?
 
Not 100%, doing a lot of reading up on OC as we speak. If you could give me a hand with instructions it would be greatly appreciated as the instructions that I have been following don't relate to this motherbaord and I tend to get confused. It's a Asus P5W DH Deluxe
 
Update: I decided yesterday to have a go at lapping. So out came the CPU and heat sink and less than an hour later both were lapped. I've got to mention that I didn't go for the mirror finish that everybody is raving about; I just left the finish with a few "swirl" marks on both the CPU and heat sink. I stuck it all back together and started up the pc - holding my breath in case I had mucked it all up...

The machine started fine, no problems at all; however, TAT only read a few degrees less than before I had lapped my CPU and heat sink (around 41/38 degrees). This was with the side of the case off too and all fans on full.
Next step was to install a 120mm fan in the front of the case to increase air flow; this was additional to the 80mm fan that sits in front of my hard drives. I have 3 hard drives in my case all sitting directly behind the small 80mm fan at the front of my case so you can imagine, there was not a lot of air flowing around the case.

Thinking about it, this should have been the very first point to start working out why I was having such high temps in the first place before lapping my CPU and heat sink. But I didn't, I had made sure that all the cables were nice and tidy but I had failed to think about the bloody 80mm fan not being sufficient enough for circulation of air. Doh!

Anyways, my machine is all back together and now even with the sides on the temps are now reading a respectful 35/32 degrees. I know that this is still not the best temps around but it’s a vast improvement on my initial temperatures. These new temps by the way are with the fans on full speed as mentioned.

I overclocked my machine to 3Ghz, ran Orthos but my machine locked up within the first 3 minutes giving an error about hardware failure or something (don’t know Orthos that well yet). So, it now sits fairly comfortably at 2.7Ghz, I’ am however putting these terrible overclock speeds down to the cheap Kingston Value RAM that I’m currently running (I have 2GB of Crucial Ballistix 8500 on back order that should be arriving within the next week).

So, the outcome to my story is double check air flow within the case and make sure that you have enough fans to circulate air around the case before doing something as drastic as lapping the CPU...
 
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