5950x dropping multi under full load

[Waldorf]

running a bench when i saw lower than usual temps.
switching to occt/prime95, i see the cpu dropping multi to 27/28, while it should be 36, or am i missing something?
no changes since install/setup month ago, and since updating to latest fw and redoing settings, no further changes and initial test/gaming was fine until now.

just to see i switched to 1st bios with previous fw/settings, no difference, same multi drop to max ~2800 mhz for clocks.

 

[ShrimpBrime]

Ok, does the clocks droop straight away, or eventually?

What temps? Core, package, vrm, chipset???

Redo settings? Might have missed something I guess. I'd check here again before anything else.

 

[Waldorf]

Multi drops on all core load, mixed load gets up to 36x, only on idle desktop, i see spikes going higher, up to 50x.
cpu never past 57C any other sensor nevwr past 65C, while cpu reached 75-80C before, depending on room temp.

like i said, i switched to 1st bios chip running older fw with same settings i used before (and working properly), same results, with multi on auto for both versions.

had to eat, will do some other tests to see if it gets within (expected) perf levels.

 

[ShrimpBrime]

Multi drops on all core load, mixed load gets up to 36x, only on idle desktop, i see spikes going higher, up to 50x.
cpu never past 57C any other sensor nevwr past 65C, while cpu reached 75-80C before, depending on room temp.

like i said, i switched to 1st bios chip running older fw with same settings i used before (and working properly), same results, with multi on auto for both versions.

had to eat, will do some other tests to see if it gets within (expected) perf levels.

No, you did not say "switched to 1st bios switch"

You said "since updating to the latest fw and redo sertings"

I'm not ready to get into a debocal about what you said, but you need accuracy and detail in the technical field. Based on what I've read, I still don't know exactly what you are saying.

You flashed firmware.
Then

You flipped bios switch via jumper? Correct?
This one older fw though, same settings.

The bios switch is for recovery. You should run it defaults always no OC. Update the secondary bios and run that one with newer firmware.

Re-evaluate user settings again, or try defaults all first. That means clear cmos try again.

 

[natr0n]

When you update a fw/bios these days you lose performance.

 

[Waldorf]

@ShrimpBrime
my fault, probable that you read 1st post, while i edited.

yeah, because you cant carry over profiles from previous fw, so all settings have to be re-done, but i did same values as before, and initial ram bench/gaming didnt show anything out of the ordinary,
so i never looked at clocks/multi, only when i wanted to get a temp reading at max load, to see how much difference remove some air in the rad had made.

recovery it done by usb flashback with dedicated button on I/O panel, the switch is on the bottom of the pcb, to select chip 1 or 2.
when i saw low multi/clocks, i wanted to exclude settings/or fw update, so i switched to the other bios chip still containing previous fw with its settings, but no change.

there is no oc besides running ram @3600/1.35v (b-die), IF at 1:1, soc at 1.1v (auto), pbo/c-state disabled.
quick test with CB23 gets me identical numbers, while multi is doing 35-36x during bench, so not sure why full load from other stuff drops multi so low.


@natr0n
lol, not in form of multi going from 35-50x, down to 27x.

 

[A Computer Guy]

running a bench when i saw lower than usual temps.
switching to occt/prime95, i see the cpu dropping multi to 27/28, while it should be 36, or am i missing something?
no changes since install/setup month ago, and since updating to latest fw and redoing settings, no further changes and initial test/gaming was fine until now.

just to see i switched to 1st bios with previous fw/settings, no difference, same multi drop to max ~2800 mhz for clocks.

What OS are you running? Did you recently get a Windows update? There some hubbub about updates coming down the Windows 11 pipeline because of performance issues affecting 9550x (and below AMD CPU's) that were supposed to get fixed sometime soon.

 

[Waldorf]

nah, still running 10, and probably stay on it, until hw/games require 11.

 

[A Computer Guy]

nah, still running 10, and probably stay on it, until hw/games require 11.

The only time I saw clocks drop like that on 5950x is when I was testing NH-L9a-AM4 and it was throttling from heat but you said your temps were fine so I have no idea unless you set a temp limit by mistake in PBO or your set to power saver power plan.

 

[Waldorf]

yeah, definitely not temp related, its cooler than ever (flushed the loop while back, and finally removed the air trapped a fw weeks ago).
nope, pbo and the like is off, and while i use power saving for low load use, i always check before running stress/bench/games, that im on balanced (99/100% for min/max).

retested with R20 to warm up the loop, then did R24, both results within margin, vs testing on first install of 5950x, on even older fw.
just dont see why the drop below 35x on prime/occt, but not on things like CineBench, and they do all-core load as well.

will do some more messing around and see if it affects me perf wise, but so far everything i used, showed (most of the time) slightly better results, if im not looking at multi ratio.