Choose preferred core settings for Windows 11...
Choose preferred core settings for Windows 11...
I’m already feeling disappointed in the Title. The "Preferred Core Selection" in Windows 11 seems quite poor. I have a 5600X with 4,8GHz on the best core and 3,8GHz on the rest. Windows is forcing my worst core to handle single-core tasks, which is really frustrating. Not only is it the least powerful core, but it’s also running 1GHz slower than the best one. That means I’m losing about 32% in Cinebench (R23) single-core and CPU-Z single-core tests.
If I have all cores but only use the best at 3,8GHz and enable PBO, I might see around 15-17% improvement. But I can’t just overclock the slowest core and be satisfied because it will only reach about 4,6GHz stable. That’s not worth the drop in multi-core performance when all other cores stop helping!
My question is: can I manually choose which core Windows 11 should use? Right now, it looks like it’s picking the C01 (my worst core in HwInfo64) instead of C02 or C06.
System details: CPU = Ryzen 5 5600X, RAM = MSI B550-A, PRO RAM = G.Skill 32GB 3200MHz CL16-38, 2x Samsung 8GB 2800MHz 1R CL14-36, SK Hynix 8GB 2800MHz 1R CL14-36, GPU = RX 6800 XT Midnight Black 16GB 2400MHz@990mV, MPT 345W max. Power supply = BeQuiet System Power 9 700W (672W@12V rail). Sorry for my unclear English, thanks for reading and maybe helping!
Have you made sure the newest AMD chipset drivers are installed? This issue was present at launch, but the updated drivers resolved it.
I would reach out to AMD support and follow the provided guidance. They may require some details for the development team to review.
Cinebench R23 MultiCore results show 10035pt. All core OC up to 4.6GHz equates to about 750pt more than the single-core score of 1492pt. Running the best core manually at 4.8GHz yields around 1540pt, though it requires keeping the task manager active consistently.
I just set up LLC 3 and PBO at 200MHz. CPU-Z Single Core shows 616pt with the best core picked manually: 658pt, which means a 6% drop in performance with PBO. Frequencies: The good cores (4): 4850MHz. The weaker cores (2): 4775MHz. Only the top core runs at 4850MHz over time. Windows always picks the slowest core for single-core tasks! I don’t understand this... It seems like Windows 11 is trying to prevent AMD CPUs from doing well in single-core work.
I haven't achieved good outcomes with pbo on before. My second-gen thread ripper is fine, though. Was your Windows 10 upgraded to 11? Besides attempting to reset the BIOS to factory settings and testing again, perhaps leaving Ryzen Master disabled would help. I appreciate the thread ripper, but from what I've seen, it's not very reliable.
I completely understand your point. The inability to individually clock each Core could stem from hardware limitations, but adjusting the base clock and overclocking boost clocks would likely improve the situation. Alternatively, you might want to allow us to set a default base clock for other cores. Unfortunately, none of your proposed solutions helped me at all. I went through everything, including a full fresh install with PBO enabled in the BIOS.