Verify temperature readings against expected values
Verify temperature readings against expected values
The X3D chips tend to get warm because their design places the 3D V-Cache directly above the CPU core area. This setup forces heat to travel through the cache before reaching the cores, adding extra resistance. That’s why AMD restricts overclocking for the 5800X3D—overheating would be severe. As long as the processor isn’t throttling due to temperature, it’s manageable. It will be hot, but not a risk. To lower heat and possibly boost performance, consider undervolting the chip.
The 3D v-cache mod introduces an additional +25C insulator on top of the die. I've verified this with the 5800x3D and 7950x3D models. Exceeding thermal limits at full power without phase change or direct die is anticipated.
Now that I've set a PBO2 curve optimizer offset of 30 (maximum) in my BIOS, temperatures have become more manageable and the system remains stable. It handles light and medium workloads better and climbs higher consistently. A full-core task like Cinebench still pushes it to 90°C quickly, but if that's normal I'm fine with it. (I had to replace my motherboard due to another issue, so I've reattached the cooler three times now. I'm sure the mounting isn't the issue at this stage.) Perhaps I just have a chip that struggles with silicon variation, especially since even with voltage adjustments and indirect overclocking, I still fall short of nearly 1000 points compared to what reviewers see out of the box. My all-core score was 12500 before optimization, reaching around 13700 afterward. All the reviews I checked showed scores above 14000.
Lol... probably used to those temps too. My 58X3D runs around the 20s and R23 barely hits over 60. Not even close. Hmm... are you running at stock settings? If you adjust the curve and lower all cores to -25, it should make a big difference. Otherwise, your cooling setup is really lacking.
What cooling solution are you employing? As I mentioned, I carefully verified the mount and contact points. My 5600X performed well previously with only a minor increase in heat output. According to reports, the 5600X and 5800X3D likely use similar heat spreader designs and cooler supports. The lower R23 ratings imply possible thermal throttling under full-core workloads... Further investigation suggests the X3D processors tend to overheat, though reaching 90°C remains uncommon even with air cooling. Therefore, I shouldn't expect such temperatures, particularly with a custom water loop and 720 mm of radiators.
It’s just a matter of comparing various 7950x3D models with CCD0 and CCD1 temperature differences, including those that use direct-die cooling. Also thinking about a 7800x3D versus a 7700x at identical power and clock speeds, we notice the temperature rise is around +25°C overall. This is roughly +25°C under full power and boost frequency. If you’re unsure, studying thermodynamics would help. A 5800x3D operating near 60°C during full load seems to be running below its maximum capacity, possibly due to excessive undervolting—this could affect performance. I suggest checking your undervolt settings with Cinebench R23. In my experience, I can push my 7950x3D further by lowering the voltage significantly and still achieve high performance, even though it draws close to 250W in air cooling. Direct-die cooling helps by cutting heat transfer layers, but TDP remains a constraint.
That is the case, yes. When I had a 5800x3D, I tested a Hyper 212, an EKWB 280mm AIO, and an NH-D15. The 3D v-cache mod is effectively a +25C insulator on the CCD.
Your 5800X3D hit its thermal ceiling even when using cooler temperatures, which is unusual. Many users report it reaching maximums near 80°C despite stock settings, so undervolting isn't necessary. It's also surprising you need an undervolt to approach the scores reviewers give with stock configurations. Running with only about 2000 points under stock settings didn't match expectations for a custom water loop a few years ago.
This refers to a component with dimensions around 58x3D and an AM4 socket.