Check if your 5900X is functioning properly. If you're experiencing issues, there might be a problem to investigate.
Check if your 5900X is functioning properly. If you're experiencing issues, there might be a problem to investigate.
To start off here's a picture: Notice how I do manage to get some improvement (and yes, I realize it's a synthetic bench and not the be-all and end-all of the argument), but if I would compare it to other experiences from other users, I seem to be short of a ~2000 extra points there and I should be dancing around ~75C. Now, the hardware used is: MSI Gaming X570 Plus | AMD 5900x | 2 KITS (4x8GB) G.Skill Ripjaws V F4-3600C14D-16GVKA | MSI RX 6750 XT MECH 2X 12G OC The sticks are running at 3733-CL14-14-14-34 and I'm using a Be Quiet Pure Loop 240mm with Gelid GC-Extreme paste. Perhaps I used too much paste, but the pressure of mounting the cooler should eliminate that problem by squeezing out excess, or so I would assume. PBO is on auto, ErP is disabled, only OC is on the memory. Am I missing something, if the need is there I can post BIOS-screenies on request
I’m not familiar with those configurations, so "custom limits" and CO refer to curve optimization. You mentioned using the multiplier across all cores, not just per CCX. Could you clarify what you mean by that?
I believe your motherboard has been too demanding with the PBO settings, causing the CPU to slow down under heat. AMD processors tend to reduce performance when temperatures rise, especially in the 70s, and become more aggressive in the 80s to avoid hitting TJmax—around 90°C for the 5900X. I suspect the "auto" setting is letting the chip relax a bit, allowing boosts until another constraint appears, likely thermal. With my 5900X cooled by a Scythe Fuma 2, I’m using PPT 175, TDC 110, and EDC 170. Running Cinebench keeps me in the 70-75°C range, so the CPU doesn’t throttle much. When paired with Curve Optimizer, I consistently hit over 22,000 in R23. You might want to experiment with these settings yourself to see improvements—fine-tuning will help match your cooler, case, and environment. It’s a good starting point, but adjustments are key. For CO tuning, you’ll need to verify stability on each core separately; sometimes a high offset works under load but can cause issues when idle. I mainly used OCCT, running it for 15 minutes per core with Large, Extreme, Variable, AVX2 configurations on a single core and thread at a time. I kept the system idle and only adjusted settings if errors appeared. Starting with -25, I gradually lowered to -20, then -15, and finally -30 until stable results emerged. This process gave me full stability.
I work with 235 PPT, 160 TDC, and 190 EDC. Your CO settings don't apply here.
Even adjusting settings manually in BIOS causes significant instability, often leading to a hard reboot. The maximum TDC value appears to be 144. While benchmarks in games like Shadow of the Tomb Raider run smoothly, this inconsistency still raises concerns. It's somewhat unusual.
It seems odd to me that those adjustments were a bit too high... curious.