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Check for thermal throttling. I have seen this on some of my AMD boxes.
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honey the codewitch wrote: Does anyone have any insight here
Not a great deal. But take a look at this: https://www.amd.com/en/technologies/ryzen-master
If the CPU supports overclocking, this tool will allow you to do it from a GUI screen. I think maybe a reboot is needed aftewards, but it far easier than trying to figure out what BIOS settings to change, and/or what's safe values.
Keep Calm and Carry On
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How's the CPU temp while running these benches?
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My bench tool didn't track that. I'd need to find a separate tool to use to check
Real programmers use butterflies
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As others have said I will bet it is due to temperature. Is the heatsink dusty? Or loose?
I would check it (CoreTemp is a good program Core Temp[^] )
If that shows high temps and thermal throttling buy some good thermal paste and maybe even a better cpu cooler.
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No, the chip is running far cooler than it really should be under load.
Real programmers use butterflies
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"The chip" or individual cores? Can you see if it is throttling? CoreTemp will give you info on each core. Also make sure your power settings are set to high performance.
It would also be nice to know if performance was better before the bios update.
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Everything. All cores top out at maybe 65C when they're rated for 90-100 under load. Nothing appears to be throttling. Nothing is set to throttle. HWInfo64 gives per core temps, and doesn't have the problem some software has of misreporting temps on AMD
Performance was about the same before the BIOS update. A BIOS update was one of the first things I tried, since I had never updated the BIOS on this board.
The only thing I can think of is this board has a very conservative profile for this chip, in terms of the voltage levels and such that it's using. But then I'm just spitballing. But the chip *does* go to full clock under load. I don't know how much of the OC stuff I can change with this board/cpu combo. The board is a low-mid range ASUS (so like a middling board, or lower end gaming board in terms of performance). I know the chip itself isn't strictly overclockable, but that doesn't necessarily mean it's not being undervolted or something maybe? Again, not sure, just spitballing.
Real programmers use butterflies
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I always thought shutdown rwmp on Ryzen was 95C. All I have is ThreadRippers and they definitely start throttling cores in the high 60's. If you are brave you can download something like ThrottleStop to see if you are both getting accurate temps and if you get shutdowns, but I wouldn't recommend it. Also, full throttle temps should be compared to idle temps.
But yeah, if nothing is obvious, you're probably 'spit balling' untilyou get lucky. Could be a lot of things, like Windows itself.
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I did try setting some profile in my bios to like CM5 Aggressive, but it causes a reboot as soon as the CPU went under load, so I do have *some* control over the hardware/firmware in this respect. I haven't dug around there, because I don't like doing things that could cause a thermal watchdog reset, especially I'd think on 7nm pathway dies. I'm hoping my answer doesn't lie down that path, because I think then my best solution is a better motherboard more geared to tuning everything and better cooling to go with it. I just dumped another $1000 into my machine recently, so I'm not eager to dump another several hundred in right now. This MB isn't really meant for a lot of tuning anyway, and I think it may run very conservative out of the box. It may not be a strictly gaming board. It's an ASUS Prime A520M-K, if that means anything, and it's probably not top shelf.
Real programmers use butterflies
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I would still be suspicious of temperature throttling. Always am.
It is generally cheap to remount your heatsink as well as ensuring it is clean. The only effort is time and some thermal paste, maybe some isopropyl to clean the heatsink.
Always a bummer when you don't get 100% performance from anything, but especially a cpu.
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Is Christmas always a Claus for celebration, or just Claus and Effect?
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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For those of us that are working over the holiday, it's a cause for cerebration.
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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or proof that Santa Claws is actually a cat.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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For a hospital worker: "The Holly and the I.V."
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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That's in a sick vein.
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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Here's hoping everyone on CP gives you coal for Christmas. Then you can have a BBQ.
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If you can afford the pollution fine...
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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Thats not totally strange I guess. When I was a kid there was this girl whose only goal was to be a nurse. No matter what game we played it had to be about a nurse. Instead of "I spy", we had to call it "I C U". If we watched cartoons, it had to be Winnie the Pooh because it had her favorite character ER. And of course if it was a movie, it had to be Disneys Anastasia...
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My wife IS a Registered Nurse. Has been since 1972. Being married to her is like living under a microscope. 
Still, I would not trade her for the whole world.
ed
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Just say what you see:
Silent worker forgot the point of sport (6)
Silent MUTe
worker ANT
forgot the point (Remove "E")
sport
MUTANT
And I am up tomorrow! 
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Mutant ?
"Life should not be a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming “Wow! What a Ride!" - Hunter S Thompson - RIP
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"to deviate or vary abruptly from type (as by bud variation) : MUTATE"
A mutant is a "freak" or "sport of nature".
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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