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AMD Processors Lose 15% Gaming Performance with Windows 11, L3 Cache Latency Tripled

Broken Processor

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The performance hit's are adding up quite nicely but I'm sure they will all get addressed in time. I'll hold off on updating until then.
 

eidairaman1

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question: If I do update to w11, I should also resetup all the apps/configs?
 
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just heard about that and, i did the test with latest aida64 is this right?
 

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just heard about that and, i did the test with latest aida64 is this right?
Those L3 cache numbers are very low, but it's correct if you're running the public release of Windows 11.

Take these ones as an example of where you should be (maybe a little better than mine, but around that range) once Microsoft pushes the fix (hopefully next week):
cachemem.png
 
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Oh, come on. Just put a "Sponsored by Intel" in Windows 11's boot screen.
Why do you think the Windows logo is blue?

The performance hit's are adding up quite nicely but I'm sure they will all get addressed in time. I'll hold off on updating until then.
I wonder how is the rest of the OS when they botched key things like the scheduler?

Looks like I made the right choice to wait this out. Anyone know when the Windows 11 SP1 disc will ship? :D
Not soon enough. That's for sure.

Intel is more affected by VBS than AMD, and you're on the 10th gen, which gets a bigger hit than 11th gen.

Yeah, though that left me hungry for information on 8th and 9th gen. 10th gen was hit harder than 11th gen, so I feel it's natural 9 and 8 are even worse off. But how much, I don't know.

And I don't know about Zen+ either, which doesn't have MBEC...
Oddly enough Ryzen 2000 are impacted very little. Or at least mine are.
 
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Oddly enough Ryzen 2000 are impacted very little. Or at least mine are.
Have you tested that with core integrity enabled? That's where the big hit is.
1633554648208.png
 
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It's almost like changing the scheduler to help Intel out screwed AMD and Microsoft has no actual beta testers, just end users that don't know what they're doing. And all the enthusiasts that might have noticed this were so ticked off by/afraid of the TPM issue, Windows 11 didn't get any real testing.

Almost as if...
 
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A few months might not be enough response time for some companies :sleep:
So it seems. Though at least they are pushing the fix next week, so there is that.
 
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Can we have a Intel/Microsoft conspiracy theory thread instead of crapping it all in here.
I am sorry you don't like your history lesson.
 
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Where did you your fake news? All processor are affected but not ridiculous numbers..... 3% for AMD and 4% for Intel.
 
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Eh... can't find a new GPU to buy so my games run like shit any way regardless.
 
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Win 11 sounds like it's as half-baked as Win 8 was... maybe even worse.
Sounds like XP before service packs, where there was a bug that if it crashed once, then on every reboot, I would get the pop-up message about Windows recovering from a serious error, even when Windows XP didn't crash again. I remember the patch for that!
 

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This sounds like a Windows problem. Does Linux also lose 15% performance with these same AMD processors? Then it's not the AMD processor "losing" performance ... it's Windows shooting itself in the foot.
 
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This sounds like a Windows problem. Does Linux also lose 15% performance with these same AMD processors? Then it's not the AMD processor "losing" performance ... it's Windows shooting itself in the foot.
Yes, it's a Windows problem.
 

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Haven't actually noticed any appreciable difference in CPU performance in the benches and games, but the scheduler issue is very obvious. Windows 10 got pretty good at exclusively keeping foreground apps (benches, productivity and games) on the 2 preferred cores.

Core 7 is supposed to be assigned background tasks only. Windows 11 is literally running an entire game exclusively on Core 7 as we speak:

win 11 scheduler.png
win 11 terrible l3.png


I don't like conspiracy theories usually, but this is such a ridiculous regression from the Windows scheduler and CPPC2 having worked just fine together for months.
 
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Wake me next year when the fully patched and truly usable 11 gets released please.
 
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good luck for all the beta testers out there
 
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