Question 5900x cinebench scores low after cmos reset

[Dragon155]

To start off, the specs:
Ryzen 9 5900x
MSI RTX 3080
32gb G.skill Trident Z 3600cl18 (oc to 4000)
MSI B550 Gaming plus

Now to start, I'm at a loss because I genuinely have no clue what is happening. I had to reset my bios the other day because I tried to turn on resizeable Bar and CSM (instead of UEFI) which proceeded to brick the computer till the cmos was reset. Beforehand, I had no issue with the 5900x or overclocking, I believe it was sitting around 1.3v at 4.6ghz and was happy. Now, i'm at a weird spot, it's at 1.275v and 4.5ghz and it is getting 16k scores in cinebenchr23, when it WAS getting around 22-23k beforehand. The power draw is very similar, around 175-190ish W, and I have the precision overboost enabled in the motherboard settings. Now here is where I am starting to get really confused. I drop the core clock to 4.4ghz, and now i'm getting scores closer to 18.5k in r23, with a power draw of 190-200W, and this is not making sense to me. And to further the pot, dropping to 4.3Ghz gives me scores just short of 20k. I mean I have no clue whats going on at this point. Dropped it down to 4.2ghz, ended up being a little less than 4.3ghz, so bottom of the pole there...

If anyone has advice on settings I need to turn on in the mobo, or just general advice, that would be appreciated. I'm not new to overclocking, but I have never deep dived into it, probably overclocked most of my cpus since a amd fx 6300, so usually i'm not stumped to the max like this.

Thanks in advance!

 

[helpstar]

did you set the ram back to xmp or manually adjusted it after the reset?
how did you reset the cmos?

 

[Dragon155]

did you set the ram back to xmp or manually adjusted it after the reset?
how did you reset the cmos?

Initially had everything at default settings, cinebench was similar to a stock 5900x, ram was set to xmp (don't exactly remember the score). reset the CMOS by removing the battery for about 15 minutes. ram adjustment was after i tested the system to make sure it was working right.

 

[Dragon155]

did you set the ram back to xmp or manually adjusted it after the reset?
how did you reset the cmos?

Guess i'm just going insane. I turned xmp on again, and lo and behold, 22k at the 4.5ghz and 2.75v. good on ya sir

 

[CountMike]

Initially had everything at default settings, cinebench was similar to a stock 5900x, ram was set to xmp (don't exactly remember the score). reset the CMOS by removing the battery for about 15 minutes. ram adjustment was after i tested the system to make sure it was working right.

Cinebench doesn't care much about RAM speed, measures only CPU. Did you also run single core tests ? That should show maximum core boost without overloading VRM. Why don't you run Ryzen Master in Advanced mode where you can graphically see Loads as well as voltages and temps at same time. If they go into red or pin needle to max, it will show any power shortcomings I suspect exist.
You haven't mentioned temperatures or CPU cooling, Ryzen are quite sensitive to it.
Just turning PBO on or Auto is not enough have to adjust it's parameters to have any effect. Is any boost enabled in BIOS ? If there are no temperature and power constrains it should hit 4.7-4.8GHz all core and almost 5 GHz for single core benchmark.
Old time, classic OC by setting multiplier doesn't work very well with modern Ryzen, it's better to let it's boost algorithm chose which cores and at what boost frequency.