Performance drops under high load at 70°C temperature.
Performance drops under high load at 70°C temperature.
Hello, I hope you're doing well. I'm reaching out because I've been struggling to fix an issue with my Ryzen 5 7600X setup. I'm using an Arctic Liquid Freezer II 360 and have adjusted the PBO settings accordingly. The performance curve is optimized for different core counts, but I notice all cores peak at around 5.5 GHz during Cinebench R23, then drop to about 5.45 GHz when temperatures rise. Despite the CPU temperature staying within the 95°C limit, it still throttles. I'm not sure why this happens—my English is a bit unclear, and I'm a foreigner. Could someone help me understand what's going on?
I'm pretty sure that this is normal behavior of AMD CPUs and PBO. They are basically overclocking themselves if enough thermal headroom exists. When the CPU gets hotter, this gets harder and harder (as higher temperatures change the physical properties of the CPU), so you'll lose a couple of MHz. This isn't throttling, you are just boosting less. If you want to get rid of this, you'd have to either cool your CPU more aggressively or disable PBO. But I doubt that is worth it for the extra 50MHz. By the way, did you properly test your adjustment of the curve optimizer by running core cycler or something like that for multiple hours/iterations? Otherwise it can yield unexpected behavior.
These curve optimiser adjustments are consistent, I've been using them for several weeks now. The core performance reached its maximum in version C23, yet once I launched a game like Hogwarts Legacy it caused an immediate crash. These parameters added roughly 1000 points in R23 compared to my previous score of under 15k. Now the best I've achieved is 16004 points (that test was executed at -40 all core CO, but those settings were quite unreliable in C23).
It seems like the text wasn’t thoroughly verified. Testing is essential to avoid crashes or unexpected behavior. A BSOD usually indicates a serious issue, but more common problems involve incorrect calculations leading to inconsistent errors. I suggest you skip using the system tonight and try running Core Cycler from https://github.com/sp00n/corecycler. This is just my advice, feel free if you prefer not to.
I’ve checked the Core Cycler results and confirmed a small rounding error of about 0.5. After trying different settings, reverting back fixed everything. To adjust throttling temperatures in BIOS, you can raise them further—try setting them to 255 or higher if needed.
The main goal was simply to verify system stability. Excellent it is. Thank you for going through so many steps for that. Moving forward, you can either manually boost your CPU speed or opt for a more efficient cooler. Keep in mind the performance gains will likely be minimal, create extra work, and may increase power usage. Keep your CPU temperature down. PBO automatically reduces clock speeds when heat rises. Either adjust the fan settings to be more aggressive or invest in a better cooling solution. Embrace the current performance—this isn't thermal throttling, it's just operating beyond its baseline limits. If you notice actual throttling, turn off the fan and let it cool naturally (with caution).