Overheating problem.

[vlcno]

First time on here, just switched to AMD from using Intel and got a 7800X3D, my CPU has been pretty hot (averaging around 50-60 idle and 80 gaming) and I have never had this problem before on a CPU, I have tried underclocking it, adding more thermal paste to no fix, my friend has the same CPU and he idles at 35-40 on an air cooler. Last AMD CPU I had was a Ryzen 5 3500, don't know if this is common with AM5. I have a 360mm AIO which I thought would handle it just fine while having 10 fans installed on my case but nope. Any recommendations or fixes or should I just try an air cooler? (doubt it will do anything)

[Hinjima]

6 minutes ago, vlcno said:

First time on here, just switched to AMD from using Intel and got a 7800X3D, my CPU has been pretty hot (averaging around 50-60 idle and 80 gaming) and I have never had this problem before on a CPU, I have tried underclocking it, adding more thermal paste to no fix, my friend has the same CPU and he idles at 35-40 on an air cooler. Last AMD CPU I had was a Ryzen 5 3500, don't know if this is common with AM5. I have a 360mm AIO which I thought would handle it just fine while having 10 fans installed on my case but nope. Any recommendations or fixes or should I just try an air cooler? (doubt it will do anything)

Are you absolutely sure you are 100% idle at 50-60c?  AM5 tends to spike or keep high temp even under just small loads that many people call 'idle'

80c during gaming is completely fine for a 7800X3D.

I actually don't see much of a problem here.

 

Yes its running a tad warm but nothing that is dangerous or anything that will harm the CPU at all. 

I would stop worrying and just continue gaming.

My own 9800X3D sits at 80c during heavy gaming.

[vlcno]

14 minutes ago, Hinjima said:

Are you absolutely sure you are 100% idle at 50-60c?  AM5 tends to spike or keep high temp even under just small loads that many people call 'idle'

80c during gaming is completely fine for a 7800X3D.

I actually don't see much of a problem here.

 

Yes its running a tad warm but nothing that is dangerous or anything that will harm the CPU at all. 

I would stop worrying and just continue gaming.

My own 9800X3D sits at 80c during heavy gaming.

Yep, CPU is normally around 10% when idle. I don't really have apps that I mark to run during startup. Glad to know that 80c is fine, just need to figure out how to fix my fan curves because they get so loud when gaming, plus it ramps up every second just to quiet down a second later which can get annoying. Just to add also, BIOS always shows my temps as 40-43.

[Hinjima]

9 minutes ago, vlcno said:

Yep, CPU is normally around 10% when idle. I don't really have apps that I mark to run during startup. Glad to know that 80c is fine, just need to figure out how to fix my fan curves because they get so loud when gaming, plus it ramps up every second just to quiet down a second later which can get annoying. Just to add also, BIOS always shows my temps as 40-43.

Fan curves definitely have to be a bit different on AM5 and something that I had to learn to tweak on both my 7700x and 9800X3D.

AM5 loves to spike even if you just open a program, so having fans ramp up when it goes from 50c to 70c and back down to 50 again within seconds is going to be very annoying in terms of noise levels.

 

80c is actually the average gaming temperature under heavy loads, even with an AIO.

It will still boost exactly the same at 50c and 80c so the performance is identical.

 

Here is my fan curve for my overclocked 9800X3D.

It might look like its at 100% fan speed at 85c but this reads from some other sensor so 85c in ArmoryCrate is actually 93c.

So I have it at 30% fan speed until 93-95c when you want max fan speed.

The CPU doesn't care if its at 55c or 83c so just having a lower fan speed to keep noise down in trade for slightly higher temprature is something I will gladly do.

Never goes above 85c during heavy gaming at 30% fan speed.  It usually sits at around 77c.

[vlcno]

On 2/23/2026 at 8:04 PM, Hinjima said:

Fan curves definitely have to be a bit different on AM5 and something that I had to learn to tweak on both my 7700x and 9800X3D.

AM5 loves to spike even if you just open a program, so having fans ramp up when it goes from 50c to 70c and back down to 50 again within seconds is going to be very annoying in terms of noise levels.

 

80c is actually the average gaming temperature under heavy loads, even with an AIO.

It will still boost exactly the same at 50c and 80c so the performance is identical.

 

Here is my fan curve for my overclocked 9800X3D.

It might look like its at 100% fan speed at 85c but this reads from some other sensor so 85c in ArmoryCrate is actually 93c.

So I have it at 30% fan speed until 93-95c when you want max fan speed.

The CPU doesn't care if its at 55c or 83c so just having a lower fan speed to keep noise down in trade for slightly higher temprature is something I will gladly do.

Never goes above 85c during heavy gaming at 30% fan speed.  It usually sits at around 77c.

Tested fan curves yesterday with no difference, got a new AIO today, looks like my old one died within a couple months of use, new AIO gives a steady 75 on full load. Will probably RMA my old AIO.