cooling issue Cooling issues with 7700X in CoolerMaster NR200P (SFF build)

[CarThrottle fan]

Hey guys!

I am running a SFF PC in a CoolerMaster NR200P v2 Max and for one reason or another, the CPU runs very hot, talking like ~70C (especially in low CPU usage - more stuff happening in RAM, like 20GB/64 in use, in high load stress tests doesn't seem to suffer from thermal throttling)

Specs are:

• Ryzen 7 7700x
• Mobo: Asrock B650i Lightning WiFi
• GPU: Gigabyte RTX 4070 Windforce OC

Cooling setup (currently negative pressure):

• 280mm AIO that came with the case TOP, set to exhaust
• 120mm Arctic fan, bottom set to exhaust
• 120mm Slim ID Cooling, again bottom + exhaust

There are some factors however I need to mention:

• due to space constraints, the pc is right now sitting in a "box", basically a large opening in a cupboard next to my desk where it has only 1 side not blocked by a wall (which luckily happens to be the left side, with the perforated panel), and there is nowhere else for me to move it, nor can I change the furniture

• it has some room on the 3 "blocked" sides, about a fist's distance from the top and more towards the back of it(drawing below), but I have a reasonable assumption that this "box" acts as a mini oven, trapping heat and probably making the problem worse 

• GPU has no issues with temps whatsoever, running at a cool 34C most of the time with the fans off

• if I were to make it as close to idle as I can, I would probably be running closer to 60C

Things I have tried:

• Turn PBO on and set Curve to -20 and TJMax to 85, improved performance in Cinebench R24 from 720s to 848, but temps have been higher than with it set to Auto

set fans in BIOS to performance mode, it helps somewhat, but it gets louder than I would like, with it being close to me

I use this PC right now for work, and even though it works fine I am very annoyed that I just can't seem to get to the bottom of this temps issue, so any help would be greatly appreciated. Thanks a lot!

[Millios]

70 C sounds pretty reasonable for a 7700x

Ryzen CPUs run hot and up to around 95 C they are more than fine

[TatamiMatt]

50 minutes ago, CarThrottle fan said:

Hey guys!

I am running a SFF PC in a CoolerMaster NR200P v2 Max and for one reason or another, the CPU runs very hot, talking like ~70C (especially in low CPU usage - more stuff happening in RAM, like 20GB/64 in use, in high load stress tests doesn't seem to suffer from thermal throttling)

Specs are:

• Ryzen 7 7700x
• Mobo: Asrock B650i Lightning WiFi
• GPU: Gigabyte RTX 4070 Windforce OC

Cooling setup (currently negative pressure):

• 280mm AIO that came with the case TOP, set to exhaust
• 120mm Arctic fan, bottom set to exhaust
• 120mm Slim ID Cooling, again bottom + exhaust

There are some factors however I need to mention:

• due to space constraints, the pc is right now sitting in a "box", basically a large opening in a cupboard next to my desk where it has only 1 side not blocked by a wall (which luckily happens to be the left side, with the perforated panel), and there is nowhere else for me to move it, nor can I change the furniture

• it has some room on the 3 "blocked" sides, about a fist's distance from the top and more towards the back of it(drawing below), but I have a reasonable assumption that this "box" acts as a mini oven, trapping heat and probably making the problem worse 

• GPU has no issues with temps whatsoever, running at a cool 34C most of the time with the fans off

• if I were to make it as close to idle as I can, I would probably be running closer to 60C

Things I have tried:

• Turn PBO on and set Curve to -20 and TJMax to 85, improved performance in Cinebench R24 from 720s to 848, but temps have been higher than with it set to Auto

set fans in BIOS to performance mode, it helps somewhat, but it gets louder than I would like, with it being close to me

I use this PC right now for work, and even though it works fine I am very annoyed that I just can't seem to get to the bottom of this temps issue, so any help would be greatly appreciated. Thanks a lot!

Try setting curve to -30, thats the max setting and might start affecting temps in a positive way beyond the -20?

[CarThrottle fan]

2 hours ago, TatamiMatt said:

Try setting curve to -30, thats the max setting and might start affecting temps in a positive way beyond the -20?

I have tried that I think 2/3 months ago and iirc the system refused to POST, so I had to reset Bios. But if I have time this week, I might try again

3 hours ago, Millios said:

70 C sounds pretty reasonable for a 7700x

Ryzen CPUs run hot and up to around 95 C they are more than fine

Yeah, this is what I keep hearing, but I am quite concerned about these idle temps (since under load it's quite fine), it's annoying when most people have idle in lower 40s or s,o and I am rocking 60s-70s

[Millios]

4 minutes ago, CarThrottle fan said:

Yeah, this is what I keep hearing, but I am quite concerned about these idle temps (since under load it's quite fine), it's annoying when most people have idle in lower 40s or s,o and I am rocking 60s-70s

Why?
Its like complaining that you fruit smoothie isnt as thick as others (I got a whole rant on that one but I dont wanna trail off) or that your route to work has more red lights or street lights in general than others.

Sure others have it somewhat better by one metric metric but it doesnt really affect your enjoyment or ability to do what you want

 

Also on SFF, unless you go water cooled like optimum did, you should expect worse temps

[TatamiMatt]

2 hours ago, CarThrottle fan said:

I have tried that I think 2/3 months ago and iirc the system refused to POST, so I had to reset Bios.

Work up to it, or down from it, -30, if non-post try -29, rinse and repeat,

 

or go up til it doesnt post then drop back down one

[TatamiMatt]

2 hours ago, Millios said:

Its like complaining that you fruit smoothie isnt as thick as others (I got a whole rant on that one but I dont wanna trail off)

Im of the mindset, a smoothie should run, thicker than juice but thinner than ice cream, im here to drink my smoothie not eat it lol, shouldnt be able to stand my straw up in it

[Millios]

Just now, TatamiMatt said:

Im of the mindset, a smoothie should run, thicker than juice but thinner than ice cream, im here to drink my smoothie not eat it lol, shouldnt be able to stand my straw up in it

The dude I saw full on could hold the damn thing like frozen ice cream, no blender, no bowl straight up hand gripping it

It looked so fking good to me

[TatamiMatt]

6 hours ago, CarThrottle fan said:

Hey guys!

I am running a SFF PC in a CoolerMaster NR200P v2 Max and for one reason or another, the CPU runs very hot, talking like ~70C (especially in low CPU usage - more stuff happening in RAM, like 20GB/64 in use, in high load stress tests doesn't seem to suffer from thermal throttling)

Specs are:

• Ryzen 7 7700x
• Mobo: Asrock B650i Lightning WiFi
• GPU: Gigabyte RTX 4070 Windforce OC

Cooling setup (currently negative pressure):

• 280mm AIO that came with the case TOP, set to exhaust
• 120mm Arctic fan, bottom set to exhaust
• 120mm Slim ID Cooling, again bottom + exhaust

There are some factors however I need to mention:

• due to space constraints, the pc is right now sitting in a "box", basically a large opening in a cupboard next to my desk where it has only 1 side not blocked by a wall (which luckily happens to be the left side, with the perforated panel), and there is nowhere else for me to move it, nor can I change the furniture

• it has some room on the 3 "blocked" sides, about a fist's distance from the top and more towards the back of it(drawing below), but I have a reasonable assumption that this "box" acts as a mini oven, trapping heat and probably making the problem worse 

• GPU has no issues with temps whatsoever, running at a cool 34C most of the time with the fans off

• if I were to make it as close to idle as I can, I would probably be running closer to 60C

Things I have tried:

• Turn PBO on and set Curve to -20 and TJMax to 85, improved performance in Cinebench R24 from 720s to 848, but temps have been higher than with it set to Auto

set fans in BIOS to performance mode, it helps somewhat, but it gets louder than I would like, with it being close to me

I use this PC right now for work, and even though it works fine I am very annoyed that I just can't seem to get to the bottom of this temps issue, so any help would be greatly appreciated. Thanks a lot!

Youre also possibly experiencing this issue, as you have a full enclosure with only 1 side open, arrows are airflow, colour is temperature

 

[CarThrottle fan]

2 hours ago, Millios said:

Why?
Its like complaining that you fruit smoothie isnt as thick as others (I got a whole rant on that one but I dont wanna trail off) or that your route to work has more red lights or street lights in general than others.

Sure others have it somewhat better by one metric metric but it doesnt really affect your enjoyment or ability to do what you want

 

Also on SFF, unless you go water cooled like optimum did, you should expect worse temps

Although I understand the point you want to make, my feeling is that by having high temps like these, in a scenario which would require the GPU to join in the chorus it will probably choke out my CPU and make it throttle to heaven and back - so I wouldn't really be taking full advantage of the hardware thats in the PC, hence why I posted the question

6 minutes ago, TatamiMatt said:

Youre also possibly experiencing this issue, as you have a full enclosure with only 1 side open, arrows are airflow, colour is temperature

 

Thanks for drawing this diagram, but I am a bit confused. Is the PC here viewed from the front, or from the left side (as my original diagram)? It looks as if you are looking from the front of it, but just want to make sure I understand it

[Millios]

5 minutes ago, CarThrottle fan said:

Although I understand the point you want to make, my feeling is that by having high temps like these, in a scenario which would require the GPU to join in the chorus it will probably choke out my CPU and make it throttle to heaven and back - so I wouldn't really be taking full advantage of the hardware thats in the PC, hence why I posted the question

Let me make smt clear

It doesnt really matter

 

To give you a good example that is very recent will be Optimum again

He made an sff 5090 and 9800x3D build, at full load it got hot AF cause 5090

The air and heat didnt really impact much (he made a custom 3D print solution tho he tried it with and without and the difference in temps and performance was withing margin of error)

 

[CarThrottle fan]

12 minutes ago, Millios said:

Let me make smt clear

It doesnt really matter

 

To give you a good example that is very recent will be Optimum again

He made an sff 5090 and 9800x3D build, at full load it got hot AF cause 5090

The air and heat didnt really impact much (he made a custom 3D print solution tho he tried it with and without and the difference in temps and performance was withing margin of error)

 

I will check this video out, even if for nothing more than the geekiness of it

[CarThrottle fan]

Oke, so I have gone ahead and swapped the bottom fans for intake, hope this will help out - if not, I might try the repaste and if that also fails it clearly means the issue lies with the pc position, and for that there's nothing I could do.

[TatamiMatt]

18 hours ago, CarThrottle fan said:

Thanks for drawing this diagram, but I am a bit confused. Is the PC here viewed from the front, or from the left side (as my original diagram)? It looks as if you are looking from the front of it, but just want to make sure I understand it

Yes thats from the front, the left side being the open slot in the desk

[Mark Kaine]

On 5/12/2025 at 12:19 PM, CarThrottle fan said:

it's annoying when most people have idle in lower 40s or s,o and I am rocking 60s-

Most people also don't have it "in a box" tbf

 

 

[CarThrottle fan]

On 5/13/2025 at 9:16 AM, TatamiMatt said:

Yes thats from the front, the left side being the open slot in the desk

Thanks for the explanation, I want to provide an update on it: so I have gone ahead and switched the bottom fans to intake which seems to have lowered the temps by about 5-7 sometimes even 10c.

However, I have noticed that, compared to other ryzen 7700x cpu's, I am only reaching 850 in Cinebench R24. I tried to turn on my RAM's XMP (Kingston KF560C30BBK2-64, 6000MT/s) and it actually harmed performance: from a constant clock of around 4.3ghz all core during the run, it dipped to as low as 1.6 for certain moments, but average wise it was at around 3.8. This translated to a decrease of points, from 840 to not even reaching stock level of around 700 (I think)

Now, what could couse that? I am currently running negative CO offset all core -20mV, the inbuilt motherboard/amd profile. Is it possible that adding XMP to the mix to the CO offset + the quite large RAM capacity might be too much for my IMC?

Or maybe it plays into the thermal headroom issue, but like I find it really funny how my GPU is so chill in a literal sense, I ran the GPU Cinebench test and it hovered at 52-56c with a brief spike at 64

[TatamiMatt]

7 hours ago, CarThrottle fan said:

Thanks for the explanation, I want to provide an update on it: so I have gone ahead and switched the bottom fans to intake which seems to have lowered the temps by about 5-7 sometimes even 10c.

However, I have noticed that, compared to other ryzen 7700x cpu's, I am only reaching 850 in Cinebench R24. I tried to turn on my RAM's XMP (Kingston KF560C30BBK2-64, 6000MT/s) and it actually harmed performance: from a constant clock of around 4.3ghz all core during the run, it dipped to as low as 1.6 for certain moments, but average wise it was at around 3.8. This translated to a decrease of points, from 840 to not even reaching stock level of around 700 (I think)

Now, what could couse that? I am currently running negative CO offset all core -20mV, the inbuilt motherboard/amd profile. Is it possible that adding XMP to the mix to the CO offset + the quite large RAM capacity might be too much for my IMC?

Or maybe it plays into the thermal headroom issue, but like I find it really funny how my GPU is so chill in a literal sense, I ran the GPU Cinebench test and it hovered at 52-56c with a brief spike at 64

Does seem a touch odd, try running a custom RAM overclock with like 5600CL32 just to see if its instability?

Also see if increasing or reducing CO makes a difference due to instability?

[CarThrottle fan]

2 hours ago, TatamiMatt said:

Does seem a touch odd, try running a custom RAM overclock with like 5600CL32 just to see if its instability?

Also see if increasing or reducing CO makes a difference due to instability?

I am a bit worried about doing custom OCing on RAM, I have never attempted it with any of my previous PCs as I just turned on XMP. For me voltages are the main fear, as I can't afford to fry anything.

I will try tweaking the CO, but this is the highest profile that appears in Bios (you can only go lower, like -30/-40). I used to run a custom one (made after watching a YT Guide on my CPU) but it seems to have behaved worse than the built-in one. I can try perhaps -30CO, but iirc trying that custom one with -30 greeted me with a NoPost.

[TatamiMatt]

51 minutes ago, CarThrottle fan said:

I am a bit worried about doing custom OCing on RAM, I have never attempted it with any of my previous PCs as I just turned on XMP. For me voltages are the main fear, as I can't afford to fry anything.

I will try tweaking the CO, but this is the highest profile that appears in Bios (you can only go lower, like -30/-40). I used to run a custom one (made after watching a YT Guide on my CPU) but it seems to have behaved worse than the built-in one. I can try perhaps -30CO, but iirc trying that custom one with -30 greeted me with a NoPost.

I believe those are the preset CO options but you can individually tweak the CO in single digit numbers in the CPU overclocking then PBO tabs

 

also you should just be able copy the voltage you currently have, just down tune the speed and increase the CAS so its more stable

[CarThrottle fan]

27 minutes ago, TatamiMatt said:

I believe those are the preset CO options but you can individually tweak the CO in single digit numbers in the CPU overclocking then PBO tabs

 

also you should just be able copy the voltage you currently have, just down tune the speed and increase the CAS so its more stable

Understood, will try that and will get back here with an update