Cooler is insufficient and crap motherboard. Both adds up. Try upgrading the thermal paste to Noctua NT-H2 or Thermal Grizzly Kryonaut Extreme.

So I finally jumped into SFF, with a NR200P for my new build - my son's PC one day just refused to boot no matter what I throw at it (old FX6300), thinking its not worth salvaging, so I decided to give my 2600 to him, and make a new one for myself. Yes it's nothing high end, some stuff I got at sale + local pc shops

Ryzen 5 5600
Thermalright AXP90-X47 Full copper
Asrock A520M ITX-AC
Silicon Power 8GB x2 DDR4
Superflower Silver Eco 500W
silly R5 240 gpu (temporary..)
in NR200P with 4 Sickleflows
Latest BIOS, chipset drivers
Balanced power plan

So immediately after booting and updating drivers etc.. I noticed the idle is on the bit high side (50C+, 40++ only during cooler nights/morning), and it vey quickly shot up to the 95C limit even with simple CPU-Z bench/stress test. Even running SignalRGB at the background keeps the idle temps at 60C+, hence I've deleted it and will switch to a hardware ARGB controller). Coming from my previous 1200 and 2600 that never even got above 80C on full loads, I am very surprised.

Anything I should take a look, or check, other than the usual cooler re-seat, repaste stuff (of which I read is quite decent for a low profile cooler, almost comparable to the Noctua NH-L9i). PBO, Curve Optimizer stuff that I admit haven't really dabbled before? The 5600 should be .. cooler than my previous chips, being more efficient, no?

Granted I haven't try gaming on it, waiting for my 6600xt to arrive.

Thanks for any feedback in advance, guys.

As Tristan said, quality of motherboard and its VRMs, that's bottom of the barrel mobo, you get what you pay for.

Since you mentioned this is in an NR200, why AXP90? Sell it off and get an ID Cooling Se-224-xt if on a budget. That will work like a charm.

Because I had to vertically mount my gpu, due to using an ATX PSU, and thus leaving clearance for cpu cooler at 75+mm something. And also out of curiosity, from using tower coolers all these time. This is more like an experiment build with stuff I'm not really familiar with + stuff I have lying around. Yea I don't game much these days, but seeing those temps sure scared me a bit.

Also I read AXP90 reviews are decent, here and there, too. Was thinking perhaps I'd swap the fan to maybe an Arctic 92mm or something..

Sure there's no BIOS setting I can poke around?

Okay understood. You could replace the AXP90's Thermalright 92mm slim fan with the Noctua NF-A9 slim but I'm uncertain how much of a difference in temp that will make.
https://shopee.com.my/Noctua-NF-A9x14-PWM-c...1d-6b49da6034fc

BIOS setting? Got. Turn off PBO

Because I had to vertically mount my gpu, due to using an ATX PSU, and thus leaving clearance for cpu cooler at 75+mm something. And also out of curiosity, from using tower coolers all these time. This is more like an experiment build with stuff I'm not really familiar with + stuff I have lying around. Yea I don't game much these days, but seeing those temps sure scared me a bit.

Also I read AXP90 reviews are decent, here and there, too. Was thinking perhaps I'd swap the fan to maybe an Arctic 92mm or something.. and I thought the mobo's 60a chokes 8-phase VRM was promising.

Sure there's no BIOS setting I can poke around?

In that config I wouldn't bother with any air cooling and go for AIO, that's saying from someone who air-cool my own 5600X.
There's barely any space for air enter between the GPU backplate and CPU cooler right? The air intake from bottom be blocked by the PCIE ribbon cable, at least that's how I imagine it.

The CPU will just recapture a lot of waste heat from either itself or the GPU while gaming, and that's made worse by slim fan and low profile heatsink.
The low profile cooler excel on sandwhich cases where they can intake fresh air straight from the side panel of the case.

Indeed, trying a few things out for testing, but probably changing to a new cooler isn't in the cards, at least for the time being. But even if I swap to a SFX psu and mount the gpu horizontally, it'll be a bigger slab of .. gpu radiating heat blocking the intake fans below. I do plan to swap to a 25mm thick fan with better pressure, and put on the vented panel, all after re-seating the cooler with AM4 stock backplate. But I do recall even removing the side panel all together not doing much, iinm. And I currently have a silly R5 240 on which I believe isn't all that hot, either.

It's just.. I can run my ol 2600 on high performance power plan w/out such a spike in temps, and I only have it on a CM 120mm AIO. And how the temps spike from 50 to 90 in just a few seconds during simple stress test is rather surprising.

Ryzen 5 5600x is a whole very extremely different beast from an R5 2600.

I refer back to my earlier recommendation, turn off PBO and see if those temps are more to your liking.

Indeed, trying a few things out for testing, but probably changing to a new cooler isn't in the cards, at least for the time being. But even if I swap to a SFX psu and mount the gpu horizontally, it'll be a bigger slab of .. gpu radiating heat blocking the intake fans below. I do plan to swap to a 25mm thick fan with better pressure, and put on the vented panel, all after re-seating the cooler with AM4 stock backplate. But I do recall even removing the side panel all together not doing much, iinm. And I currently have a silly R5 240 on which I believe isn't all that hot, either.

It's just.. I can run my ol 2600 on high performance power plan w/out such a spike in temps, and I only have it on a CM 120mm AIO. And how the temps spike from 50 to 90 in just a few seconds during simple stress test is rather surprising.

Indeed, it does seem so. And I did turn off PBO in BIOS, seems.. not much different when in loads. Still spikes up to 95 limit in CPU-Z test. Perhaps.. getting a SFX psu and a tower cooler is the way to go after all. Will do so, if everything else I try fails. This AXP-90 mounting is silly, as well. There's no indicator as to when to stop screwing it in, and I do not want to bend my board, obviously.

Good news, I reseated the cooler, and re-pasted with CM Maker that I still have left, and it seems things have improved - idles are pretty much the same, but I ran Cinebench for like an hour, and it seems it peaked at 80C smth, at 4.3GHz, PBO is enabled, and Curve Optimizer as well. But had the mesh side panel on, though, I have no idea how bad it'll be if I put the TG on and with a bigger gpu, as well. But prolly I can still adjust the cooler seating a bit better, as well as better paste sometime later, too.

Fan is still at max 2800 rpm at those temps, but luckily its not all that noisy. Also I've resorted to hardware rgb controller, too. Helps with idle somewhat. Thanks for all the suggestions guys!

You have to use a lot more paste on Zen 3 due to chiplet design. I used spread method for my 5900X.

Can't wait to see how the new chip will perform and how much will they priced over here... 5600, 5700X and 5800X3D.

$180 i5-12400F
$200 5600
$210 i5-12400
$220 5600G
$230 5600X
$240 i5-12600
$265 i5-12600KF
$290 i5-12600K
$300 5700X
$330 i7-12700F
$360 i7-12700
$410 i7-12700K
$450 5800X3D
$450 5900X

Was planning to buy a cheapo 2nd hand Ryzen3 cpu+mobo but what a turn off when looking around. I think for the price they are asking, better buy i3 12th gen.

Currently have X570 mobo + R5 3600 + 16GB ram.

Working with Adobe Photoshop/Illustrator and occasionally Premier/After Effects.

Am feeling the proc "could" be a lil better. Am not really sure which/what to upgrade first for best bang for buck upgrade at the moment.

Or is sticking with AMD still the right way forward.

Currently have X570 mobo + R5 3600 + 16GB ram.

Working with Adobe Photoshop/Illustrator and occasionally Premier/After Effects.

Am feeling the proc "could" be a lil better. Am not really sure which/what to upgrade first for best bang for buck upgrade at the moment.

Or is sticking with AMD still the right way forward.