Question Too high temperatures for my 7800x3D setup!

[WumpusTheCoder]

Hi there.

I have recently when in windows been noticing spikes (when having NZXT cam open monitoring the CPU temperature) which go from around 45c to 71c for simple things like opening an application window, starting to type on discord etc etc.

I wanted to test to see if my thermals were a tad weird, so I ran Cinebench MC. I got a score of 17662, with a consistent temperature of what I saw on NZXT cam to be 84-86c...

This is strange, however - as people with similar or identical builds all do not get as high as 81 or 80c when running Cinebench with their 7800x3D, with either worse performing AIO coolers or the same cooler.

The following is my spec list on PCPP: https://pcpartpicker.com/user/SyndicateBear/saved/#view=XLWdqs

But in a nutshell, I have a 7800x3D being cooled with an Arctic Freezer ii 360 AIO, in an NZXT H9 Flow case (with an optimised and carefully configured fan orientation setup).

If anyone has any advice to help debug this issue in any way shape or form - I’d be more than grateful.

Thanks a bunch,
Henry.

 

[Colif]

Is AIO intake or exhaust?
How are fans set up?

The spikes are normal for how ryzen works. If a process needs to be run, the CPU will wake a core, boost up to speed needed to run the task and then rush back to idle again once its completed. So if you were to watch the package, its constantly moving. I got tired of watching that and instead watch another sensor in the CPU.

max temp for CPU is only 89 so its getting close.

 

[WumpusTheCoder]

Is AIO intake or exhaust?
How are fans set up?

The spikes are normal for how ryzen works. If a process needs to be run, the CPU will wake a core, boost up to speed needed to run the task and then rush back to idle again once its completed. So if you were to watch the package, its constantly moving. I got tired of watching that and instead watch another sensor in the CPU.

max temp for CPU is only 89 so its getting close.

My AIO is in blow/exhaust configuration, at the top of my H9 Flow case. My side fans are intake, and my bottom fans are intake. My back fan is outtake.

My AIO only had 2 cables coming off it - the 3 pin A-RGB connector, and a 4 pin (what looked to be a) PWM connector.

I plugged this connector not into the CPU_FAN socket - but this one instead on my B650 Aorus Elite AX motherboard (SYS_FAN4_PUMP).

I thought this was the right place to plug it in, as the AIO only has to cables coming off it like I said - and they looked to be coming off the pump. I have also reseated and re-pasted the cooler - to no avail.

 

[Colif]

You can try using AIO as intake at the front/side of case, as you should get an advantage drawing cool air into the CPU, the GPU doesn't care if the air it gets is slightly warmer

You could just as easily use all 3 fans as exhaust in top/rearr of the case, since you on water cooling. I use AIO as intake and have 3 Noctua fans as exhaust. You don't really want the hot air hanging around radiator so sucking it out roof and back is best idea.

I guess bottom one could stay as intake but its not really needed if you have 3 x 120mm as intakes on AIO.

I can't figure out which of these you have - https://support.arctic.de/en/lf2-360 as there are a few revisions and none of the instructions show 2 cables. Expect you right that its pwm

note: at least case manual shows you can run a 360 in front - https://www.datocms-assets.com/34299/1673509545-case_h9-flow_digital-manual-en-220929.pdf (thought I check after suggesting it)

thats a a nice case, you have plenty of options.