Overclocking i2600K with Noctua NH D14 and Akasa Apache fans

meteoman

meteoman

meteoman

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25 Dec 2011
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New to the forum and need some expert advice. This is my first overclock but I am worried about temperatures (too high?).
I tweaked a little bit the rig (see below for the reason).
This is the system:

i7 2600K,
P8P67 Pro B3 Rev 3.1
8Gb GSkill RAM DDR3 1600 Mhz CL7
CM 690II Advanced
Noctua NH D14 but removed stock fans (NF P12 and P14) and added instead two Akasa Apache 120mm PWM (reason: want a quiet PC when not loading it).
Win 7 64

Test result (Intel Burn Test v2.5 10 runs standard - Linpack output):

Ambient: 22 C

Stock frequency, idle:
Core temps:
27C-35C

4.5 Ghz 100% full load
VID 1.36-1.38 v

Max
65 C
75 C
76 C
72 C


I have seen similar temperature around but am still not completely convinced it's fine.
Maybe the 140mm middle fan on the Noctua is required instead of the 120mm which I am using (replacing the stock NF P14)? Maybe need reapply thermal paste? Or are these temps just fine?

Note : Noctua vs Apache Specs:

Noctua NF P 14 140mm: airflow 110m3/h, static pressure: 1.29 mm H2O
Akasa Apache 120mm: airflow 97.7m3/h, static pressure: 2.64 mmH2O

Thanks
M.
 
I have pretty much the exact same system as bar the fan changes and I reach a maximum of about 70°c when running Intelburntest at 4.6GHz.

Maybe try reseating? Are there any other fans in the case?
 
Your temps don't look too bad but if you want low noise and good performance, the 140mm NF-P14s win everytime over 120mm fans. I would take those rated Apache specs with a pinch of salt.

If you want the best configuration, get two Thermalright TR-140s. Not only are they quieter than the NF-P14s but they perform better and have PWM functionality. The Apaches can't compare to that.
 
Thanks Helios, Greg,

QUOTE
I have pretty much the exact same system as bar the fan changes and I reach a maximum of about 70°c when running Intelburntest at 4.6GHz.

Maybe try reseating? Are there any other fans in the case?

Have the usual fans for the case, front 140 mm, top 140mm and rear 120mm, all reduced however to 700/800 rpm.
According to your results, this may be a thermal paste issue. Or it may well be the Apache not performing as I would have expected. Will test again with the Noctua stock fans and try to understand.

M.
 
You need to run Intel Burn Test on Max Stress Level and 8 threads.

The way you ran it will hardly stress the CPU, that said your temps look quite high.

This is my 2500K @ 4.6GHz stock NH-D14

46ibtmax.jpg
 
Last edited:
Have reapplied the thermal paste and put back the Noctua stock fans, yet temperature readings are pretty much the same with Intel Burn Test 2.5 I get max of 75 when OC at 4.6Ghz. Don't understand what's wrong here. I am using all auto settings in BIOS except VRM frequency fixed mode at 350, DRAM voltage for my RAMs (G Skill) is 1.6V.
I see VID going up to 1.38/1.39

Any idea?

Thanks
 
Forget auto, try lower vcores, you might be surprised how much less you need.

Also, regarding Intel burntest, how much Gflops does the cpu get? Should be over 100, if its like 50-60 or so, then you're using a non AVX supporting version and its not ramping up to the highest temp you can get, or really stressing the cpu properly. Use max setting as well.
 
> Forget auto, try lower vcores, you might be surprised how much less you need.

> Using auto voltage can sometimes cause the core voltage to become too high. Try setting it to 1.35v or so.

Did that, setting manually 1.35 in CPU voltage. However what happens when running IBT is that it has spikes up to 1.38/1.39 eventhough I set it at 1.35. And when it goes that high, the temp also increases.

Thanks
m.
 
Might be worth turning on Load Line Calibration if your board support its. The alternative is to set the voltage even lower to compensate for the fact that it increases under load.
 
Helios,
activate LLC to medium
did also lower cpu volt, set to 1.35 but then when running IBT I have BSOD under load (4.5 Ghz). So, I think I am stable at 4.5 on auto but with vid up to 1.38, when going to 4.6 vid goes to 1.39 and temp unacceptable (I mean, 75 up to 79 after two , three 10 run tests). Understand no CPU is the same, so may be I am unlucky and got a "nervous" CPU? Or is there anything I am missing?

Also, I still can't figure out how to keep vid stable, even though I set it manually, under load it goes to what it needs (e.g. 1.38 or 1.39) and at that moment temps reach the top. Could it be memory? (G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7D-8GBXH)??

So in the end issue is not the Akasa fans but something else. Thermal paste was reapplied as per indication (tiny drop 5mm). Note also that idle temp seems very good (25 to 35 up to 37, 39 at 4.5Ghz low load)

Thanks anyway
m.
 
Forget the VID you need to be watching the vcore in CPU-Z.
It would be easier for people to help if you posted screen shots, like the one I did above.
Have you tried lowering your Ram to 1.5v.
Lower your CPU PLL Voltage to 1.750v.
Do you have an option to use Offset vcore on that board ?
 
Davefran said:
Forget the VID you need to be watching the vcore in CPU-Z.
It would be easier for people to help if you posted screen shots, like the one I did above.
Have you tried lowering your Ram to 1.5v.
Lower your CPU PLL Voltage to 1.750v.
Do you have an option to use Offset vcore on that board ?
Click to expand...

Here you are:
screenshot001sj.jpg


Core voltage is 1.312, temp are 70, 71 but sometimes IBT fails the test and advise overclock not stable. Yes there is an option to offset vcore (I guess this is CPU voltage). Board is P8P67 PRO
Meanwhile I changed the two Akasa for a Thermalright TY 140 PWM and a Noctua NF-P12 PWM, as someone suggested and after checked.
 
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