Questions about cooling

[Toralex]

I changed the original cpu fan and the chasis fan to a retail version in the Pavilion desktop case with Lubin motherboard.

After starting the desktop  I get the system temperature failure (90d) after two minutes and the PC shouts done.

1. are there any restriction to the manufacturer of the fan models regarding compatibility?

2. I put about 3 g heat conductive paste on the CPU. Could it be it is too much?

3. The TDP of the CPU is 91 watt. The cpu fan has a power for 95 watt. This is not enough, isn't it?

4. The chasis fan should blow the cool air in or the the hot air out? It is only one chasis fan, so I don't know the best airflow.

Thanks a lot for any feedback and ideas

[NonSequitur777]

@Toralex,

Welcome to our HP User Forum!

Your HP Pavilion Desktop - 570-p070nz PC (1AU30EA) is fitted with the Lubin motherboard (SSID: 82F2) and is* compatible with 7th gen 91-watt processors such as the i5-7600K and i7-7700K, even though HP doesn't mention/recommend it, such as here: HP Desktop PCs - motherboard specifications, Lubin | HP® Customer Support.

* User performance result (i5-7600K) HP Pavilion Desktop PC 570-p0XX: HP Pavilion Desktop PC 570-p0XX Performance Results - UserBenchmark.

Even though a 91-watt processor is compatible, a processor heatsink/cooling fan upgrade is highly recommended, as the stock CPU cooler was meant to accommodate 65-watt processors. You said you upgraded this, please share what you upgraded it with.

Also, 3 grams of thermal paste is almost certainly too much.  Remember: less is better.  Also use a quality thermal paste, such as ARCTIC MX-4 Premium Performance Thermal Paste.

Application of the thermal paste is something else you should look at, please review: https://www.youtube.com/watch?v=123Ls9svoqQ.  Personally, I prefer "Option 3: Spreading" (timestamp 1:42), whereas Arctic recommends "Option 4: One Point" to, quote: "avoid voids between CPU and cooler".

The heatsink/cooling fan combo is supposed to blow air down, and the rear-chassis cooling fan is supposed to blow (hot) air out. There are more drastic cooling upgrade options, off the HP Reservation, such as adding an additional chassis cooling fan blowing cool air in like I have done with a number of HP desktop upgrade projects (disclaimer: do so at your own risk and volition):

Link: Solved: Upgrading HP EliteDesk 800 G3 SFF - Page 7 - HP Support Community - 8251218.

Since you like processor performance, perhaps you also want to upgrade your power supply so that you can pair your high-performance processor with a high(er) end graphics card.  Since your motherboard is 24-pin ATX power enabled, you can swap out the 180-watt stock PSU with any industry standard ATX power supply, as long as you watch its dimensions (LxWxH) for fit inside your case.

Hope this stream of consciousness was helpful.

Kind Regards,

NonSequitur777

[Toralex]

@NonSequitur777

Thanks you very very much for these helpful information.

Inside the HP Pavilion Desktop is an Intel Core i7-7700K.
For the CPU fan upgrade I use this one: Xilence - XC032 I250PWM CPU Cooler 1156 / 1155 / 1151 / 1150, Performance C | I250PWM. Do you think this one is feasiable and it is enough for 91 watt TDP?

As I understand your reply the heat error message comes due to the amount of thermal paste.
I used your recommend  ARCTIC MX-4 Premium Performance Thermal Paste. In the package are 4 grams of paste and I was not aware it is too much. But I have a 2nd package of this paste. So i will give it a next try with less paste.

Indeed I had in my mind also to change the PSU. Here I was a little bit confused about the format.
Also I changed the harddisk, the SSD and spent more RAM two years ago.

[NonSequitur777]

@Toralex,

Your replacement 95 watt TDP heatsink/cooling fan combo should be able to cool your i7-7700K.

Question: once your processor heats up, are both cooling fans (heatsink + rear chassis cooling fan) revving up, and is the rear fan blowing (hot) air out?

Kind Regards,

NonSequitur777

[Toralex]

I change now the amount of thermal paste to the recommend way.

Afterwards I execute the HP's system extensive tests without an issues. Yeah!

Both fans blow the air out.

Thanks a again for your advices 🙂

Torsten

[NonSequitur777]

@Toralex,

You are welcome -glad I could assist to resolve your heat issue.

Kind Regards,

NonSequitur777