Reduced processing demand during HandBrake X265 conversion
Reduced processing demand during HandBrake X265 conversion
Hello everyone, your CPU runs at 11800H under Handbrake. When using medium encoding speed, your CPU usage drops to around 80, and it stays below 60 with slow settings. I've observed that when load is low, the CPU frequency fluctuates between its maximum and minimum values. Could this be due to a RAM bottleneck? You have 32GB of 2666MHz dual-channel memory (RAM type R1x8). Although my data is outdated, I'm curious—are there any tests that can confirm if RAM is the limiting factor?
Adjusting the preset makes my CPU work harder and the clocks don’t spike much. With medium settings, even when using real-time, it only reaches about 60-70% of its capacity, but it fluctuates a lot—rising quickly to around 40-50% and then dropping again.
Support on medium settings offers roughly double the speed compared to real time. On slower systems it runs about 25% slower, which means a 30-minute video might take around 45–50 minutes. I shared this info on Reddit and someone replied: same here with AMD3800x 32GB. My solution was turning on simultaneous encoding. Now the workload is well over 90%, and it seems the issue isn’t from my RAM.
Typically all parts handle the workload uniformly. (I verified this) It's an 8-core setup with 16 threads.
I faced a comparable problem after upgrading from 6700k to 3900x. I switched to another tool like Staxrip that handles chucks and parallel tasks. Typically I configure 4 chucks with an extra one for parallel work (4 for video encoding, 1 for audio). This led to all CPU threads reaching full capacity during encoding. The more chucks you set, the greater the memory demand, so monitor RAM usage particularly when working with higher resolution videos such as 4k.
Splitting the encoding does tend to reduce quality. Switching your RAMs to 3200mhz dual-rank could improve performance, but it might not raise your Cinebench score significantly—your current benchmark is already much lower than the top scores without any restrictions.