Cooling a 5800x

Devrij · 23 Sep 2022 at 19:13

I currently have a cryorig A80, and it is just pegged at 90C all the time in games, idles at around 55C, spikes up to 80s just on the desktop for long periods (basically if it isn't completely idle).

So either my A80 has finally kicked the bucket (I do get warm air from the side the hoses enter, but not hot and the far side is usually cool) or it just isn't up to it. Repasting did nothing at all. This is with a mild undervolt btw.

So while I'm not majorly concerned about these temps, the noise is a lot because the fans are just at full tilt all the time and the A80 doesn't seem to allow for separate pump and fan control (there's a harness off the pump that splits to take both fans). Even so, at 100% fans and pump it still can't hack it.

So I'm considering a 360 rad AIO. Am I on the wrong track?

Devrij · 23 Sep 2022 at 19:25

I should add I have 4 120mm fans on the case as well as the two 140mm fans exhausting through the rad. So case temps should be fine (air out the case is barely warm)

Devrij · 23 Sep 2022 at 22:31

Joeyuk said:
I use a Noctua D15 which keeps mine under control. The fans do ramp up a little but nothing much.

thanks, I was hoping to go AIO though just because it makes working in the case a bit easier. EG swapping RAM etc

Devrij · 24 Sep 2022 at 11:54

Haz123 said:
Your AIO is not working as intended. You should easily be able to cool a 5800x with that sort of AIO. 5800x only uses 120w when running a full core load so imo you have a bad contact or faulty AIO, my guess is the pump has bitten the dust so you are getting inadequate to no water flow.

Edit - Run a full core load with blender and then obviously check temps , will be 90C no doubt , but then also check your cpu Mhz whilst it is hitting 90C. If you are getting 4.4GHz at 90C then you are not throttling that much but if you are getting significantly below that speed then there is a major cooling problem. Do not run this program for long , just a quick test.

All core it sits at around 3.9GHZ and 90C, and that is from a cold boot. I reckon it'd get worse if I let it run for a bit to warm up the coolant. In fact, it's down to 3.8 just in the time it took to type this.

Devrij · 24 Sep 2022 at 13:20

So I checked, and my A80 was bought 6 years ago, so it is possible the fins are a bit gunked up by now and slowing down the flow rate. Picking up an arctic 360mm AIO to see how that fares. At the very least I will get some more RGB for my case :rolleyes:

Devrij · 24 Sep 2022 at 17:45

Yeah, time flies eh! Thought I only got it a couple years ago.

Devrij · 24 Sep 2022 at 19:37

Haz123 said:
The Arctic Freezer II aio are very good. I have a 360 in a second PC. Rads are slightly thicker than other brands and the tubes are quite long as well so be sure it will fit into your case.

For reference. My 5800x is under an open loop, so very good cooling, and running the cpuz stress test the cpu is 4.6ghz all cores and 75 C and thats with the fans on medium revs , not trying to max out the cooling and just letting you know what sort of numbers you should achieve with a fully functional aio

Thanks that's encouraging. The fans going full tilt is driving me a bit batty

Devrij · 24 Sep 2022 at 21:32

Cool thanks, I'm in an o11 XL case so think it should fit okay. Looking forwards to better boosting and quieter running

Devrij · 25 Sep 2022 at 09:10

Cyber-Mav said:
Aios are consumable items, they dont last and fail all the time with either pump issues or coolant blockages.
Grab another aio for another limited lifespan cooling solution or get air cooler for life?

I mean, mine lasted 6 years, which for the convenience factor when working in my case is pretty good

Devrij · 25 Sep 2022 at 09:37

Yeah, and while it isn't my top priority, I'm not gonna lie that I prefer the aesthetic as well. I went with the straight RGB version because I prefer a static colour and having more money to being able to do fancy things

Devrij · 26 Sep 2022 at 08:02

JollyJamma said:
Have you tried enabling LLC with a more aggressive voltage negative offset?

What is your current voltage drop? I applied a negative 0.2 offset and my temps when down quite nicely with my 5700X with LLC mode 3 enabled (mode 1 = quite mild, mode 5 = high, 3 is moderate).

I tried a negative 0.3 offset but the system isn't stable with that.

It's been a while so can't remember my settings, but I do have a negative offset applied on voltage (and a +100mhz offset too which is stable).

Devrij · 26 Sep 2022 at 09:02

JollyJamma said:
I saw that, how much is the offset?

Not at my desktop now, but it was the lowest I could get it while stable.

Devrij · 26 Sep 2022 at 19:38

JollyJamma said:
Ok so yeah, sounds like your current cooler is probably overwhelmed with either the pump at minimum or contact not being 100%.

I reckon that pulling it out and reapplying thermal paste and checking mounting pressure would be great.

You could easily just get a known good AIO like the Arctic Freezer 280mm.

I actually moved my pc into a new case about a month ago, gave the whole AIO the best clean it's ever had (along with every other component), fresh paste etc, and temps on the CPU didn't move an inch. So I am fairly certain the rad is not the bottleneck but the pump must be gunked up

Devrij · 30 Sep 2022 at 22:03

So I have my arctic 2 360 AIO on, and I am now boosting to 4.4ghz box stock and hitting 79C in prime95 (with fans whisper quiet), which is much more reasonable and leaves me some room to twiddle with undervolting etc.

Thanks all, seems my old A80 had just had it.

Devrij · 30 Sep 2022 at 22:59

Haz123 said:
Glad it is all sorted in the end.

6 year guarantee with Arctic so good for at least that long. Just as a matter of interest did your box have a sticker on it to say it has had the gromit replaced?

uh oh, no it does not. Just a sticker saying a LGA1700 bracket is included