Processors

[theqqmaster]

OS: Windows 10 PRO (1909) (got latest X570 chipset driver from AMD site) (AMD Ryzen ballanced plan (single core boost not increse even if i change to performace, multicore bit better))

PSU: Corsair CX650M 650W (2x NVME and 1080 GTX) (so doubt it's any issue with power supply)

Motherboard: Asus X570 PRIME PRO (latest bios 1405 version with AGESA version of combo-am4 1.0.0.4)
RAM: G.Skill Trident Z Neo 3600mhz 18-22-22-42 (got them with Direct Over Clock Profile)

CPU: 3700x with Dark ROCK PRO 4 (idle ~35-40c, with load like CB20 all core goes ~60-70c) (i got silent FAN plan, so RPM go hight after 75c)

In UEFI PBO is dissabled (Precision Boost should still work, right ?) (auto = dissabled - atleast what i read on forums (also that just giving heat nothing more, few points in CB thats nonsense to keep it enabled))
This board cant change BCLK (standart is 100mhz, but i got 99.8 mhz)

My temps are ok, even if i manual oc it all core 4.3G @ 1.325v, cpu is stable atleast for CB20 run

So the problem is i never saw cpu 4.4g single core, fault mby of BCLK just hitting 99.8 mhz ? (44 ratio x 99.8 = 4391mhz (i not even see thoose mhz))
Well tell me advices where to dig to solve the problem, mby its some UEFI setting that i miss in ASUS board
P.S. In attach got peak of single and multi core, also agesa version, if need smth more from setup, tell me

Sorry about bad english
Best regards

[theqqmaster]

so i cant nothing to do with it? 
got all that, but seems i am just not lucky with silicon lottery, bit sux when it not reach advertised speeds...

Max boost for AMD Ryzen processors is the maximum frequency achievable by a single core on the processor running a bursty single-threaded workload. Max boost will vary based on several factors, including, but not limited to: thermal paste; system cooling; motherboard design and BIOS; the latest AMD chipset driver; and the latest OS updates. 

[misterj]

theqqmaster, you are within 1.3% of the Max Boost Clock - probably withing measurement accuracy.  Enjoy, John.

[theqqmaster]

Well i calculate bit other way, we got base 3,6Ghz, extra boost for single core what is advertised is +800 mhz. So thoose 1,3% what u mention is from total core speed (4.4Ghz) is 57.2 mhz , so from thoose extra 800mhz loose is about ~ 7%(if take example ss what i add in attach), and thoose are peaks, in realtime it's even worse

[misterj]

theqqmaster, look at any way you like.  If you want to pursue it please open an AMD Online Support ticket.  Enjoy, John.