Ryzen 3800x 95°C in 1 second with a NH-D15

[Reagan Reese]

 

Hello all! I'll let the video do the talking, but I don't freaking get it. Top of the line CPU cooler and I can't get the right temperature. The cooler is cold, but the CPU is 95° C instantly? And as soon as the test is off, right back down to idle. 

 

Things I have tried:

• Re-seat CPU (3 times)
• Re-applied TIM (over 6 different ways), almost a whole tube of Arctic Silver
• Latest BIOS
• Used HW Monitor, Fan Xpert 4, CPU-Z, and Ryzen Master all reporting the same temperatures and voltages
• Default Mobo settings, except for XMP 3200MHz
• Stock CPU settings and speeds

I just can't understand. My old 1600x did the same thing: never got the cooler even warm, and ran at 70-80° C under full load. 

 

My CPU cooler can't be dead, but it is about 3 years old now. The base plate on it is also cold under load.

 

I guess the CPU performs as expected, but I was wanting to dig into OCing it. Maybe I should have bought a $70 board instead of a $200+

 

Specs:

Ryzen 7 3800x

Asus Crosshair VII (Wifi)

GTX 1080Ti

Samsung 970 Evo+ NVMe SSD

 

[SavageNeo]

2 minutes ago, Reagan Reese said:

Stock CPU settings and speeds

Tkae precision boost overdrive aka PBO and core performance boost aka CPB off. it fixed my temps.

[Reagan Reese]

5 minutes ago, SavageNeo said:

Tkae precision boost overdrive aka PBO and core performance boost aka CPB off. it fixed my temps.

Alright, trying. 

[St. Nick]

You might also take out the cpu, put it on the table upside down and spin it. if the heatsink isn't flat it might not be  making contact. Some of the Ryzen 7 heatsinks are more bowed then others.

[Kilrah]

10 minutes ago, Reagan Reese said:

The base plate on it is also cold under load.

Are you using the correct mounting brackets? It really sounds like your cooler isn't even touching the CPU.

[Juular]

How your fan curve looks ? Might be it just can't react to temperature change that quickly, try testing it at maximum RPM to see if problem persists, if yes then it's definitely smth wrong with the cooler or it's mounting. That's why i went with AIO, big-ass 1kg heatsink coolers are pain the ass to work with.

[Reagan Reese]

1 minute ago, St. Nick said:

You might also take out the cpu, put it on the table upside down and spin it. if the heatsink isn't flat it might not be  making contact. Some of the Ryzen 7 heatsinks are more bowed then others.

 

1 minute ago, Reagan Reese said:

Alright, trying. 

Hey! So turning off that stuff has me sitting at 65 degrees!

[Reagan Reese]

8 minutes ago, SavageNeo said:

Tkae precision boost overdrive aka PBO and core performance boost aka CPB off. it fixed my temps.

Dude you're a freaking legend! I was about to send this stuff back lol

[Juular]

1 minute ago, Reagan Reese said:

 

Hey! So turning off that stuff has me sitting at 65 degrees!

Well, you've disabled OC'ing essentially but it still doesn't look right, this cooler should be capable of cooling 100W CPU easily.

[Reagan Reese]

1 minute ago, Juular said:

Well, you've disabled OC'ing essentially but it still doesn't look right, this cooler should be capable of cooling 100W CPU easily.

True, my voltage is at 1.125 instead of 1.45 sometimes

 

[SavageNeo]

3 minutes ago, Reagan Reese said:

Dude you're a freaking legend! I was about to send this stuff back lol

You wellcome

[St. Nick]

PBO does have a nasty habit of giving the cpu near dangerous levels of voltage. on my 3700x it allows voltages up to 1.45 when I can get all core 4.2 with only 1.285. PBO is far too liberal with voltage but his CPU might still benefit from a light lapping if the heatspreader is a particularly egregious example of not being flat.

[Reagan Reese]

3 minutes ago, Juular said:

Well, you've disabled OC'ing essentially but it still doesn't look right, this cooler should be capable of cooling 100W CPU easily.

So as soon I bumb the voltage up, the temp rises to the moon again. I swear the temp number isn't even temperature, just a voltage monitor llol

[Juular]

3 minutes ago, Reagan Reese said:

True, my voltage is at 1.125 instead of 1.45 sometimes

 

Yeah, Zen 2 motherboards shoot up vCore too high by defaults, you can try to enable PBO\OC back and set vCore offset to like -0.05 V to -0.1 V to see if CPU is still stable, that should reduce thermals considerably.

[Reagan Reese]

So I'm at 4.3Ghz at 1.28 vols. Cooler is still cold but it says 80 degrees

[Juular]

Just now, Reagan Reese said:

So I'm at 4.3Ghz at 1.28 vols. Cooler is still cold but it says 80 degrees

How about fan curve ? Does it cool it any better at max RPM ?

[Reagan Reese]

1 minute ago, Juular said:

Yeah, Zen 2 motherboards shoot up vCore too high by defaults, you can try to enable PBO\OC back and set vCore offset to like -0.05 V to -0.1 V to see if CPU is still stable, that should reduce thermals considerably.

That's just it though, the cooler is literally not transferring heat. The CPU temp looks like a complete lie at this point lol

[St. Nick]

Yeah it sounds like something is just not making proper contact if that is the case. As stated I am running a 3700x myself with an NH-D15 with only 1 fan. It does not exceed 69 degrees under load with an all core overclock after even half an hour of stress testing.

 

[Reagan Reese]

1 minute ago, Juular said:

How about fan curve ? Does it cool it any better at max RPM ?

I could take the fans off and it would be the same temp

[Reagan Reese]

[Reagan Reese]

5 minutes ago, St. Nick said:

Yeah it sounds like something is just not making proper contact if that is the case. As stated I a m running a 3700x myself with an NH-D15 with only 1 fan. It does not exceed 69 degrees under load with an all core overclock after even half an hour of stress testing.

 

There is what hardware monitor is telling me

[St. Nick]

So when you spin it, does it stop  after about half a rotation or kleep going like a top? If it's the latter then you might wanna lap the IHS, if  your not comfortable voiding your warranty that way, exchange it and see if you get a better one. If it does 4.3 all core at 1.28 that is pretty good silicon though and you might consider the lapping option.

[St. Nick]

Also don't use HWmonitor with ryzen it just doesn't do temps right. What does Ryzen master say about your temps?

[Reagan Reese]

Just now, St. Nick said:

So when you spin it, does it stop  after about half a rotation or kleep going like a top? If it's the latter then you might wanna lap the IHS, if  your not comfortable voiding your warranty that way, exchange it and see if you get a better one. If it does 4.3 all core at 1.28 that is pretty good silicon though and you might consider the lapping option.

True. I'll need to wait for more paste to arrive before I can try that. Thanks for the help guys, I really appreciate it!

[Reagan Reese]

Just now, St. Nick said:

Also don't use HWmonitor with ryzen it just doesn't do temps right. What does Ryzen master say about your temps?

It's pretty much the same