AIO not cooling CPU properly

[Noah Dunbar]

I recently upgraded to a Ryzen 7900X and decided to get an AIO (DeepCool LS720 SE 360mm) with it. This is my first AIO, but with following the directions and some YouTube videos (especially the one from Gamers Nexus) I believe I installed it in the optimal configuration. However, it's not keeping the CPU cool at all.

At first it idled at around 70-75c, but as one of my first troubleshooting steps I repasted the cooler and it now idles around 65-70c. The moment I run Cinebench, it jumps to 90c and throttles. I've confirmed the pump is working, but the air coming out of the AIO is cool and the tubes feel cool as well, the CPU block however is warm.

Installation

 

I'm no expert, but the temps in HWiNFO look super weird, with the cores being in the 30s but the CPU in the 60s? I'm not really sure what I'm looking at though. When running Cinebench individual cores do jump to 90c though.

Idle temps from HWiNFO64

 

I've tilted the PC to try and get air out, but I didn't hear any bubbles either. I've repasted, run it through its paces, and ensured the pump is working. I'm not sure what else to do. Any help is greatly appreciated!

[Shimejii]

90c is not throttling. This CPU is designed to run at 95C and will HIT 95c under a full load. Even with a 360mm aio these chips are designed to give it everything it can within its thermal limit, if it sees it can boost clock higher because you gave it a better cooler, its gonna run at faster speeds but hit those same temps. Cinnebench is a pure CPU workload, its going to spike it to 95c, thats what these chips are designed to do. You can set it to be in the power limited mode to a certain wattage if you dont like those temps.

 

From the looks of it it seems to be idling it the 35-45c range, which is perfectly normal. Even 50-55c in desktop when you are moving the mouse around a lot.

[NorKris]

5 hours ago, Noah Dunbar said:

Cinebench, it jumps to 90c and throttles.

 

and the score is?

[freeagent]

Why do you have your AIO like that

[TPCEA]

Turn the block so that the tubes come out of the top. If you can't, then it off the right side. Is that's not possible, either, turn over the radiator and then you can turn over the block. With that orientation, air will get trapped in the block. 

 

Why do you say it throttles?

 

If you do what you normally use it for, that's what's important. What are the temps?