Your 3900x isn't delivering the expected performance.
Your 3900x isn't delivering the expected performance.
At 4350mhz it should reach around 7400-7600 according to the benchmarks I found, right? I've tried running nothing except Ryzen Master and sometimes CPU-Z for the 1.5V setting from an Intel user—wow, that was intense! I posted completely stock with these numbers: idling at 1.46V to 1.526V based on CPU-Z testing with Cinebench R20: boosting up to 4000mhz at 1.352V according to CPU-Z. Thermal readings are at 84 based on Cinebench. I'm using the X62 Kraken mounted for cooling, my score was 6912, the last one was 6955—probably similar. The RAM is at 2133 CL16 instead of the expected 3600 CL16. Should probably enable the docp profile?
That depends on what benchmarks you're looking at. I'm basing mine off what would be daily OC results (even though that result is from HWBOT). So that's a RAM overclock that isn't anything too extreme and running the benchmark without tweaks or performance bias settings.
It was a Cinebench R20 as well. All monitoring tools display varying results, making it hard to trust any single number. I enabled the docp profile in the BIOS and reached 7008 points, roughly 80 points higher. I also came across a discussion thread and followed the top-answered post, which lowered my idle voltage. According to CPU-Z it's between 1.5V and 1.526V, though it sometimes jumps to 1.199V. I’m not sure anymore—maybe the cores are entering a low-power state or something similar. It seems to be active at around 56-63 degrees, which feels a bit high for my setup, but it might be normal for 12 cores. Just to confirm, am I in good shape?
Ryzen 3000 series chips reach their maximum performance at 95°C. Your 84°C model still has some margin. Aim for high IF and memory speeds, targeting around 3800mhz. Most systems won’t support 2000mhz at this frequency, so you’ll need to adjust accordingly. Adjusting SenseMi settings requires patience and fine-tuning. It’s not a straightforward process, unlike manual overclocking. There are many parameters to explore for boosting clocks, but it takes time to get it right. Are you comfortable with this approach? Sure, except running a Gen 1 board with a Gen 3 CPU—you’re doing well. Keeping the cooler running at optimal levels helps your Ryzen maintain boost speeds longer. My setup has a default core boost of 4GHz at 4350mhz for single cores. If temperatures rise, the all-core boost drops to 3.9GHz, usually around 85-90°C, which triggers the stock fan to run at full speed. That’s a clear indicator something needs adjusting. AMD pushed clocks and voltages beyond this threshold to squeeze every last bit of performance, leaving little room for manual tweaks.
I secured a solid price on the components, which is why I chose the gen1 board with the gen3 CPU. I’ll upgrade my RAM to 3800 CL16 and set the IF to 1900 or at least attempt it, using the DRAM calculator. Thanks a ton! You and @DildorTheDecent made a huge difference!
To keep things running smoothly, ensure the memory sticks are actively cooled using a fan. Intel recommends a maximum of 1.5V for safety, but I operate at 1.6V. At 3800MHz, consider testing voltages above 1.35V to achieve stability or performance. You probably won’t need more than 1.410V for v-mem. I’m interested in the type of memory you’re using—please share the details. (from my sig) thphn160.zip
The package name and details clearly highlight its great performance. I kept the voltage setting at the default, which is around 1.43. The sticks are currently at about 43°C—seems fine. I might run memtest86 later to confirm. G.Skill F4-3600C16-8GTZKK.html
Have you checked if your AMD driver is current? Look for the one that supports the Windows power plan for Ryzen, which lowers voltage consumption when the system is idle.