Wednesday, October 6th 2021
AMD Processors Lose 15% Gaming Performance with Windows 11, L3 Cache Latency Tripled
Apparently, AMD processors officially compatible with Windows 11, exhibit a three-times increase in L3 cache latency with the new operating system. The new operating system is also found to break the "preferred cores" system on AMD processors (UEFI CPPC2), in which the two "best" CPU cores, which can sustain the highest boost frequencies, are highlighted to the operating system, so most of the light-threaded traffic could be sent to them.
AMD and Microsoft jointly made this discovery, and listed out potential impact on application performance. The increased L3 cache latency affects performance of applications sensitive to memory performance. They also warn of a 10-15% loss in gaming performance. On the other hand, a dysfunctional "preferred cores" system would mean reduced performance in light-threaded tasks as the OS is unaware which are the processor's two best cores. Thankfully, both issues can be fixed via software updates, and AMD is working with Microsoft to push fixes for both issues through Windows Update, in an update rollout scheduled within October 2021.
Source:
AMD
AMD and Microsoft jointly made this discovery, and listed out potential impact on application performance. The increased L3 cache latency affects performance of applications sensitive to memory performance. They also warn of a 10-15% loss in gaming performance. On the other hand, a dysfunctional "preferred cores" system would mean reduced performance in light-threaded tasks as the OS is unaware which are the processor's two best cores. Thankfully, both issues can be fixed via software updates, and AMD is working with Microsoft to push fixes for both issues through Windows Update, in an update rollout scheduled within October 2021.
141 Comments on AMD Processors Lose 15% Gaming Performance with Windows 11, L3 Cache Latency Tripled
Intel helped MS build the Win11 Scheduler.
For benchmarks with win11 and alder lake, what will they compare it to if it doesn't?
Still do w11 anyway?
Those laughing and being dismissive are clearly ignorant of the past and eager for it to repeat.
Like I said, wait and see. I see incompetence more than malice, but history makes me wary.
That's not to say that buying reviewers is not an issue, but the best way to fight it is to stop giving shills of any type credibility and air time.
Anand tpu gn and sth are my mainstays. Not sure where I would go from there...
Edited, potentially after thumbsup:
I actually am looking forward to alders lake and hope it brings competition... just don't like any shady business.... be it Intel paying Shrout research for SSD reviews, Chiller hyperclocked cpu, Zen2 Turbo clocks or Nvidia review guides.
Its a choice of evils... if you are casual user you get force fed. If you're not you spend a lot of time avoiding those meals.
Its the same as going for McDonalds or cooking your own meals.