Question Rearranged cooling, now temps are up but so is the performance (sort of)

[LedAstray]

First of, I am not sure if this is the correct subsection of the forum, so please forgive me if it's wrong place to ask.
This is a bit of continuation of the previous thread: https://forums.tomshardware.com/thr...w-my-mobo-is-confused-about-the-fans.3860155/

I got everything working there, but brother told me to flip the radiator on CPU so that the flow is front-back instead of bottom-up. Temps were supposed to go down a bit, but they went up and by quite a lot.
In previous arrangement my Ryzen 5700x3d would idle in BIOS at 27 Celsius, on Windows it would range from 27-33 Celsius. In games, under worst cimcurstances, it would go up to 45 Celsius.

Now however, it will mostly idle anywhere between 38-45 Celsius spiking to 50, the temps are changing very quickly. Temperature did not change in BIOS, 27 Celsius again.
In gaming it goes up to 60ish Celsius now.
What is weird, I see completely reverse results in Cinebench - used to be 70 and over, now 68 top.

On the other hand, I noticed "slight" performance improvement:

CP2077 gone up from 80ish FPS to between 90-100 most of the time
Witcher 3 went up from 45-57 closer to 60 w/ Ray Tracing - quality - on
But then again, stuttering appeared.

It is truly baffling, I honestly don't know what is going on and would like to know if anybody makes sense of it please.

 

[beyondlogic]

First of, I am not sure if this is the correct subsection of the forum, so please forgive me if it's wrong place to ask.
This is a bit of continuation of the previous thread: https://forums.tomshardware.com/thr...w-my-mobo-is-confused-about-the-fans.3860155/

I got everything working there, but brother told me to flip the radiator on CPU so that the flow is front-back instead of bottom-up. Temps were supposed to go down a bit, but they went up and by quite a lot.
In previous arrangement my Ryzen 5700x3d would idle in BIOS at 27 Celsius, on Windows it would range from 27-33 Celsius. In games, under worst cimcurstances, it would go up to 45 Celsius.

Now however, it will mostly idle anywhere between 38-45 Celsius spiking to 50, the temps are changing very quickly. Temperature did not change in BIOS, 27 Celsius again.
In gaming it goes up to 60ish Celsius now.
What is weird, I see completely reverse results in Cinebench - used to be 70 and over, now 68 top.

On the other hand, I noticed "slight" performance improvement:

CP2077 gone up from 80ish FPS to between 90-100 most of the time
Witcher 3 went up from 45-57 closer to 60 w/ Ray Tracing - quality - on
But then again, stuttering appeared.

It is truly baffling, I honestly don't know what is going on and would like to know if anybody makes sense of it please.

If it's a aio

At the front of case tubes should be at the bottom of the case going up to CPU.

This is to prevent air from being trapped in the block and to stop the pump working itself to death.

 

[LedAstray]

It's not, it's just heatsink with dual fans

 

[das_stig]

Front fans behind front panel or drive cages, will impede air flow, Also always better to have fans pushing thru a radiator regardless if front or top and heatsink.

 

[bill001g]

Does the CPU thermal throttle.

From what I remember the 5700x3d is 90c before it reduces the cpu performance and you are nowhere near that.

You will not see any difference in performance if your system run 80c or 50c. The cpu will run at maximum rates on both.

Now if you overclock maybe the limit is less than 90c but there is really is nothing you can overclock on 5700x3d chips.

The only real difference would be you can run the fans slower and in theory making less noise by getting better air flow in your case.

 

[Misgar]

brother told me to flip the radiator on CPU so that the flow is front-back instead of bottom-up

It's not, it's just heatsink with dual fans

By the sounds of it, you've rotated your air cooler through 90 degrees. When you did this, did you remove the fan(s) from the heatsink and refit them after changing the orientation?

If so, you might have fitted one of the fans in reverse during reassembly, which would account for the rise in temperature. Both fans need to be pointing in the same direction.
https://www.pcworld.com/article/394576/how-to-tell-which-way-your-fan-is-blowing.html

In my computers, I have case fans at the front blowing air into the case. Next I have two fans on the CPU heatsink directing air towards the rear. Finally I have a fan on the back panel (behind the CPU cooler) extracting air out of the case. This provides a fairly consistent flow of air, from front to back.

 

[LedAstray]

By the sounds of it, you've rotated your air cooler through 90 degrees. When you did this, did you remove the fan(s) from the heatsink and refit them after changing the orientation?

Yes - I've had some brainfreeze when doing so as it looked like both fans were blowing air in direction of heatsink when they were vertically.
I confirmed that now by looking at photos I took previously. Now both fans blow air in the same direction through the heatsink, which I can confirm by looking at arrows printed on the fans.

n my computers, I have case fans at the front blowing air into the case. Next I have two fans on the CPU heatsink directing air towards the rear. Finally I have a fan on the back panel (behind the CPU cooler) extracting air out of the case. This provides a fairly consistent flow of air, from front to back.

Similar setup for me ATM - 3 fans at the front sucking fresh air in, one at the back blowing the air back out, two at the top - following my brother's advice top front one blows fresh in, and top rear ejects hot air out.
Previously both were exhaust fans.

I rebooted my PC into bios, it showed slightly lower temps (26 vs 27) and then again to OS, where it sits somewhere between 32-40, but the temps are changing every second.

Now, someone told me I might have used too much thermal paste - could that be the case?