CPU_FAN vs CPU_OPT

[Killjoy_NS]

Hi to all!

It seems that I can't find straight forward answer to my question.

 

I bought Arctic Freezer 36 BLACK cooler for my Ryzen 7 5800x.

Following the manual, I managed to install it properly.

 

I plugged it into CPU_FAN header...and fans weren't spinning...

I was like W-T-F???

 

Then I've read that OPT is used for dual tower coolers.....like mine.

Honestly, whole my life I've had single tower cooler or factory/default cooler.

 

Ok, I've plugged fans one into another creating "chain"....and plugged it into CPU_OPT.

Everything is working fine.

I can access to fan curve settings in bios...blah, blah...like regular CPU_FAN header.

 

 

BUT!

 

I've seen ppl (on tutorials and stuff) plugging same coolers separatelly, one in CPU_FAN and other fan into CPU_OPT.

Does those ppl have to setup FAN CURVE separatelly in bios (one for CPU_FAN and other for CPU_OPT)?

 

Which option is better?

 

Both fans into "chain" and then into CPU_OPT or connect every fan separatelly (fan+opt)?

 

Thank you.

[191x7]

CPU_OPT is for plugging the second CPU cooler fan when the CPU cooler has 2 fans and you need to connect two fans to the motherboard.

It's not for use instead of the CPU_FAN.

[Killjoy_NS]

6 minutes ago, 191x7 said:

CPU_OPT is for plugging the second CPU cooler fan when the CPU cooler has 2 fans and you need to connect two fans to the motherboard.

It's not for use instead of the CPU_FAN.

So, I made a mistake?

Ok, but when I chain two fans, they won't work in CPU_FAN, they work together in CPU_OPT.

 

Should I configure separate fan curves in bios?

I have settings for CPU_FAN and CPU_OPT separatelly.

Edited December 6, 2024 by Killjoy_NS
But why would manufacturer build an option to chain cpu coolers if they should be plugged separatelly?

[191x7]

1 hour ago, Killjoy_NS said:

So, I made a mistake?

Ok, but when I chain two fans, they won't work in CPU_FAN, they work together in CPU_OPT.

 

Should I configure separate fan curves in bios?

I have settings for CPU_FAN and CPU_OPT separatelly.

Is the CPU_FAN header dead?

[Killjoy_NS]

2 hours ago, 191x7 said:

Is the CPU_FAN header dead?

Nope. It's brand new mobo.

It works when 1 fan is plugged.

I mean...I replaced previous cooler (ThermalTake) with Arctic.

 

Comp was working.

Shuted it down, unplugged it....replaced with Arctic and....nothing...

Chained coolers, plugged into CPU_FAN....nothing....they moved just a little like it doesn't have enough power to push it...

 

Then I've read somewhere that I should use OPT.

Plugged into OPT....VOILA!

Working.

 

My mobo is GIGABYTE B550 Aorus Elite V2.

Edited December 6, 2024 by Killjoy_NS
Revision: 1.5 (there are differences in BIOS between rev 1.1 and 1.5)

[Killjoy_NS]

2 hours ago, 191x7 said:

Is the CPU_FAN header dead?

Maybe....just maybe...BIOS saved settings for a fan curve for previous fan.

 

Could that be an issue?

I mean, previous fan was ThermalTAke ToughAIR 310.

 

[191x7]

1 hour ago, Killjoy_NS said:

Maybe....just maybe...BIOS saved settings for a fan curve for previous fan.

 

Could that be an issue?

I mean, previous fan was ThermalTAke ToughAIR 310.

 

Yes, it can be, check that.

[Killjoy_NS]

4 hours ago, 191x7 said:

Yes, it can be, check that.

 

Well, I solved it.

I've inserted "front fan" into CPU_FAN header and "back fan" into CPU_OPT.

I didn't try "chain" connection.

Only.....it didn't work at first.

But I gave it a little push....I've spun fans (with my finger) just a little bit and they started to rotate.

Ofc, I've reset BIOS on "Optimized Defaults".

 

But in general, Arctic fans have some sort of a delay in general.

They need like 2-3 seconds to start spinning.

 

Never seen such a problem in my life.
I mean....you plug in cpu fan into fan header......fan started to rotate...

Let's say that "I solved it".

 

At first, I thought......maybe my PSU is not enough.

But it is ASUS ROG Strix 750W Gold modular, Gigabyte B550 Aorus Elite V2, 32GB of ram at 3600MTs (2x16 kit), NVMe SSD, 2xHDD and XFX RX 7800 XT gpu.
 

[Killjoy_NS]

Well, this is BIOS.

 

 

I had to manually set fan curves for both CPU_FAN header and CPU_OPT.

[191x7]

5 hours ago, Killjoy_NS said:

Well, this is BIOS.

 

 

I had to manually set fan curves for both CPU_FAN header and CPU_OPT.

This is unrelated but;

Your RAM seems to be in the second slot pair. Doesn't Gigabyte recommend using the first? Check the manual; I am not sure.

- Check your SSD for firmware updates.

- Have you considered upgrading to a Ryzen 5700X3D or 5800X3D to significantly improve your gaming experience?

[Killjoy_NS]

10 hours ago, 191x7 said:

This is unrelated but;

Your RAM seems to be in the second slot pair. Doesn't Gigabyte recommend using the first? Check the manual; I am not sure.

- Check your SSD for firmware updates.

- Have you considered upgrading to a Ryzen 5700X3D or 5800X3D to significantly improve your gaming experience?

Well, I check manuals only not to miss anything....but in general, no.

Maybe Gb recommends first and third slot for ram, I don't know honestly?

Kingston Toolbox doesn't offer any firmware.

 

Considering gaming....I'm a light gamer.

I'm a very difficult person in terms what I like and don't like.

In five years, I found one or two games to play....newer games are not....exactly to my taste.

 

8 core cpu will be more than enough in the next 5 years let's say.

I will upgrade my PC.....maybe when "AM6" platform come out.

Believe it or not, I'm still replaying bunch of old games....and RX 7800 XT will be more than enough when it reaches "minimum" in games.

I'm not a freak for every frame.

I can play game on 30fps with low details.

But I appreciate every suggestion.

[191x7]

31 minutes ago, Killjoy_NS said:

Well, I check manuals only not to miss anything....but in general, no.

Maybe Gb recommends first and third slot for ram, I don't know honestly?

Kingston Toolbox doesn't offer any firmware.

 

Considering gaming....I'm a light gamer.

I'm a very difficult person in terms what I like and don't like.

In five years, I found one or two games to play....newer games are not....exactly to my taste.

 

8 core cpu will be more than enough in the next 5 years let's say.

I will upgrade my PC.....maybe when "AM6" platform come out.

Believe it or not, I'm still replaying bunch of old games....and RX 7800 XT will be more than enough when it reaches "minimum" in games.

I'm not a freak for every frame.

I can play game on 30fps with low details.

But I appreciate every suggestion.

I know the feel about games. The last "new" sp game I liked was Cyberpunk 2077, the release version.

[Killjoy_NS]

15 minutes ago, 191x7 said:

I know the feel about games. The last "new" sp game I liked was Cyberpunk 2077, the release version.

And I'm playing it on max details and everything....I like RDR2...even I don't have "maxed" cpu.

My display can "push" 165 refresh, but it is only FullHD.
Back in the day......we were all like "can you play it"?

"Yes, go for it".
No BS like frames, refresh rate, lagging, glitching...

My first PC was Athlon 2000+ with 256MB of ram and GeForce MX440 (64MB) and I played a lot.