CPU Temp With Fan setup

Thangpham

Commendable
Mar 30, 2016
8
0
1,510
Hi everyone,

I recently swapped my components to new case and installed 5 pack cheap RGB Fans. I have some problems with temperature of CPU in different cases.
My specs :
Case Inwin301
I7 4770 ( nonK)
Cryorig c7
Asus turbo 960.
5 rgb Fans @ 1800rpm ( 2 intake in front , 3 exhaust - 1 back -2 bottom).
-> Apply new thermal paste Arctic Silver 5.

http://
2v8cHRN

https://i.imgur.com/2v8cHRN.jpg

https://i.imgur.com/2v8cHRN.jpg

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1. Without GPU installed, I got temp at 27*c idle, and reach above 80*c after 10min stress test and keep going up ( from Prime95 latest version- Blender options) . I cant go with Small FFT as it reached above 90* in first 10-20 second. -> is this normal ?

2. With GPU installed , I got temp at 34*c idle and go even faster to 90* in prime95. Is this normal?

3. Also can you help me to optimize the airflow in my case?
FYI:.With GPU installed, if I make 2 bottoms fan to intake air , GPU will block almost everything and fresh air cant reach anything above GPU ( see the picture). .
https://i.imgur.com/2v8cHRN.jpg



So many questions, but hopefully someone can answer it for me. Tks a lot



 
Solution
The key to good case cooling is INTAKE.
For that, your two front 120mm fans running at 1800 rpm should be sufficient.
If those two fans are filtered, your parts will stay cleaner.

All the fresh air that comes in the front will exit somewhere, taking heat with it.

The main reason for an exhaust fan in the rear is to direct the airflow past the cpu cooler and the graphics card.

Note that adding excessive exhaust fans will draw in unfiltered air from adjacent openings.
That is a trade off that you make for extra "bling".

The cryorig C7 is a downdraft cooler that is very good for what it does, but it is not very good for your setup.
I would replace it with a tower type air cooler like the H7.
Your non overclocked cpu really needs...
C7 cooler is not made for this kind of CPU torture. and don't use prime95 above 26.6 on your CPU - it's beyond torture.

As for the case, pretty, but very poor when it comes to airflow. Use both front and bottom spots for intake and rear for exhaust.
 
The key to good case cooling is INTAKE.
For that, your two front 120mm fans running at 1800 rpm should be sufficient.
If those two fans are filtered, your parts will stay cleaner.

All the fresh air that comes in the front will exit somewhere, taking heat with it.

The main reason for an exhaust fan in the rear is to direct the airflow past the cpu cooler and the graphics card.

Note that adding excessive exhaust fans will draw in unfiltered air from adjacent openings.
That is a trade off that you make for extra "bling".

The cryorig C7 is a downdraft cooler that is very good for what it does, but it is not very good for your setup.
I would replace it with a tower type air cooler like the H7.
Your non overclocked cpu really needs nothing stronger.
A $35 scythe kotetsu is a favorite of mine if you like quiet.
Here is a review:
http://www.silentpcreview.com/article1391-page1.html

To answer your questions:

1. Not to worry.
With your cooler, and setup, your temperatures are nominal.
The cpu will slow down or shut off if it senses a dangerous temperature. That is around 100c.
Normal operation will not reach stress test temperature levels.
Past that, stress testers will use AVX instructions which are not common and generate more than normal heat.

2. Adding a discrete GPU will generate more heat. I think your results are nominal.
I like the blower type cards, they get heat directly out the back of the case.

3. What to do now?

Without expending funds:
Experiment with removing the bottom two fans.

If you have not done so, put a filter on the front intakes.
This will restrict airflow a bit which is not what you want, but a cleaner set of parts is a very good thing.

See if changing the two bottom fans to intake helps, noting that the cleansing effect will diminish.

For $35 I really would install a tower type air cooler.
If you are really into "bling" you can replace the excellent 120mm stock fans of a H7 or scythe kotetsu with one of your bottom led fans.
 
Solution