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what is going on with my L3 Cache speed 46GB/s instead of over 650GB/s (5800X)

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Yeah OC'ing Ryzens is kinda meh, I just have PBO +200 on my 3600 instead of manual OC. Boosts up to 4300 nicely.

I never used pbo, always manual overclocking, people used to say that pbo is bad, I guess it might have been in the past, they may have fixed some issues it had when it came out, going to try that , thanks.
 

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I never used pbo, always manual overclocking, people used to say that pbo is bad, I guess it might have been in the past, they may have fixed some issues it had when it came out, going to try that , thanks.
I guess people think that it's bad as it uses high voltages but in light loads = no worries. If it would use those 1.4V+ on heavy loads, we would had hella lot of dead Ryzens. :D

edit: This went at 4400 without problems but I rather use PBO..
 
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Well for what is worth, cpu is at default settings, no overclocking at all. I used to let it overclocked to 4.5ghz all cores but as I needed a better single core performance, so I let mine 5900x at default to get up to 4.8ghz.

These days there are no no overclocking as such, the the board and CPU always does it for you and is included by default and you call it boost, thus the updates are even coming. Leaving Auto often introduces unwanted results.

Ryzen OC is done normally only with PBO, otherwise you break all the thing that makes the CPU better, most just doesn't know how to do it, because it takes hell of a lot of time to do per core adjustments.

Thinking that default is default for certain motherboard makers is utterly wrong. Some do even overvolt the CPU for the sake stability and less RMA or notoriously stupid VRM design as it is slow to react, it is very board specific and each has to find their own solution.
 
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I guess people think that it's bad as it uses high voltages but in light loads = no worries. If it would use those 1.4V+ on heavy loads, we would had hella lot of dead Ryzens. :D

edit: This went at 4400 without problems but I rather use PBO..

Funny, not sure if is an issue, but on windows 10, my 5900x used to get up to 4.8 but in windows 11 it only reaches 4.6 max, just checked, temperature is at 62c, there is no reason to hold it back like that. I will try pbo then.
 
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Funny, not sure if is an issue, but on windows 10, my 5900x used to get up to 4.8 but in windows 11 it only reaches 4.6 max, just checked, temperature is at 62c, there is no reason to hold it back like that.

Known issue dude... do you read the news? UEFI CPPC2 (“preferred core”) does not work for now. Welcome to the extended beta test.

You can blame The beta testers who don't properly report and file problems to Microsoft as the problem didn't gain enough traction during the Win11 preview.
 
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Known issue dude... do you read the news? UEFI CPPC2 (“preferred core”) does not work for now. Welcome to the extended beta test.

You can blame The beta testers who don't properly report and file problems to Microsoft as the problem didn't gain enough traction during the Win11 preview.

Yeah I read that, even though I read that, I completely forgot about that. When you said it, I then remembered it, reason I said if motherboards manufactures issued a new bios in order to fix that, I had checked mine and the bios is not out yet. So basically right now, manual overclocking is the best case scenario in my case. I have been playing overclocking it manually, got up to 4.6ghz 1.25 all cores, better than default for sure, anyway, doing some stability tests.
 

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2C9FA853-B3A5-465F-AF32-4BB2D900C48F.jpeg

Disclaimer: the 10 part of the photo is from around 3-4 months ago, and 3 UEFIs back. But it was the only one I had for 10, and subsequent UEFIs didn’t change the scores that much in 10.
As you can see, with my rig, my L3 is awful in write and copy, and bad in read and latency.
The thing is, BTW, I play at 1080p75 max settings, since my oldie but goldie Vega 64 can’t do more and I have a cheap monitor, and I didn’t notice anything strange in 11 vs 10.

EDIT: Despite having a prehistorically old Aida (for running both OSs with the same Aida), nothing significant changed with the latest one, same bad L3 results.
 
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Known issue dude... do you read the news? UEFI CPPC2 (“preferred core”) does not work for now. Welcome to the extended beta test.

You can blame The beta testers who don't properly report and file problems to Microsoft as the problem didn't gain enough traction during the Win11 preview.
Why should you blame anyone but MS themselves? They named as win11 a major incoming update of win10. Win11 should work with all hw combos as well as win10 since they have the same kernel. MS changed something and totally broke the working almost well cpu scheduler ONLY for Ryzen CPUs and I am not sure it was an accident now that AL is around the corner. There is no excuse of this mess.
 
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Why should you blame anyone but MS themselves? They named as win11 a major incoming update of win10. Win11 should work with all hw combos as well as win10 since they have the same kernel. MS changed something and totally broke the working almost well cpu scheduler ONLY for Ryzen CPUs and I am not sure it was an accident now that AL is around the corner. There is no excuse of this mess.

Imagine the zoo of hardware M$ has to test. It ain't closed walled Apple with few devices. It is hard to blame them.

They mostly code on VM's not on real machines. This specific bug exposes only on bare metal, the whole beta testing attitude is rather funny sometimes. Like whining in some random forum will ever help.
 
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I have similar very poor L3 results with Windows 11. Is there a fix out soon or what? How does everyone not have the Trial version of AIDA64? Are you guys actually buying the software?
1634049879893.png
 

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I’ve had a key for like 17 years.. :D
 
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Poor L3 Cache 60-80 GB/s :laugh:
 
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Why should you blame anyone but MS themselves?
And I'd argue that to a point the blame rests mostly on the CEO and bean counters that decided to cut the resources for QA.

MS changed something and totally broke the working almost well cpu scheduler ONLY for Ryzen CPUs
Yeah, that's strange as hell. Why or how they broke the Ryzen part of the scheduler I have no idea. It's too damn suspicious, and I don't really like to don the tinfoil hat or whatever.

This specific bug exposes only on bare metal, the whole beta testing attitude is rather funny sometimes. Like whining in some random forum will ever help.
And when I discovered the bug I reported it. Can't do much more than that, I'm not Nadella's neighbor.

20211012-134129.png
 
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Good a long time ago beta testers got money for that and now u got a temeltric OS and play for free beta testers, thanks to you all.

Greentings a Win 10 LTSC 1809 User (Without Consumer Temeletry, Cortana and Store crap) :peace:
 
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It maybe be stable on stress, full load. Problems with bad OC using PBO that because Win11 doesn't boost the right cores it stresses out poor OC or even default motherboard settings that are often not so default at all, and not the instability on full load but on medium no or weak load, ie the voltage is not enough for some bad cores. Sudden death, without bsod is usually culprit for not enough voltage.
I often get "IRQL_NOT_LESS_OR_EQUAL" BSOD with not enough Vcore. Sometimes, it just crashes, like you said.
 

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To all the people still making a fuss about this:

View attachment 220566
AMD Ryzen CPU's L3 Latency Performance Fix To Be Resolved By Microsoft Through Windows 11 Update on 19th October, CPPC Driver on 21st (wccftech.com)


Yes it's an issue. But it's a known one with a fix already existing on the dev branch and a known release date.
Use 10, or deal with it. I see no issues with gaming on 11 despite being hit by this.
That's nice, just after Intel reviews hit, right? If so, wtf...
 
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How is this?
1634914348416.png
 
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so is it solved?
 
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For the most part. Some claim bandwidth is still a little low.

Yeah, this is my experience as well. The bandwidth and latency actually varies quite a bit, between 60-75 ns memory and 300 GB/s to almost 1 TB/s on the L3. It's kind of wobbly.

One run I get this:

cachemem.png


Just for the very next, get this:

cachemem2.png


and then it's suddenly fine again. Performance is noticeably improved, though. AMD also released a chipset driver update to address the UEFI CPPC2/core scheduling issue.
 
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on w11 and i don't know what to thank of AIDA64.last night my L3 cache was ~660 today
going to put aida 64 in the toilet.
 

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