Question Poor stock 5600x multicore performance, is the motherboard to blame?

[arielgold241]

Hello,
I recently got a new 5600x. Running it with a b450 s2h Motherboard, 32GB ram at 3200mhz, up to date Bios

The stock multicore values are marginally lower than the averages I've seen of 4.2-4.3Ghz, and are at 3.915Mhz, 76W PPT limiting.
Multicore benchmarks are also quite disappointing - ~10000 R23 and 4400 CPU-Z
Singlecore runs fine at 4.65Ghz and benchmarks are also ok (1530 R23 and 645 CPU-Z).

Now, when enabling default PBO, numbers go crazy high, EDC is limiting at 120 and PPT is at 156W and probably could go higher if EDC is increased, temp is 78C.
With this multicore values are at 4650-4630Mhz and benchmark tests are as expected (R23 11870)

What I'm wondering is why at stock settings, when PPT is at 76W 100%, the multicore speeds are so much lower lower than the average (roughly 400Mhz lower)? Could it somehow be the motherboard and if so what could cause this? Is there anything else that could be the cause?

Thanks a lot!

 

[Lutfij]

Welcome to the forums, newcomer!

I recently got a new 5600x. Running it with a b450 s2h Motherboard, 32GB ram at 3200mhz, up to date Bios
When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

We can then work our way from there. If your new processor is a Ryzen 5 5600x, what processor were you on prior? Just for reference, PBO for some tends to give them a boost in performance while some have mentioned that it dumps a lot of power into their system, so you're advised to enable/disable PBO on a trial and error basis(if it aids your tasks performance).

 

[arielgold241]

Welcome to the forums, newcomer!

I recently got a new 5600x. Running it with a b450 s2h Motherboard, 32GB ram at 3200mhz, up to date Bios
When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

We can then work our way from there. If your new processor is a Ryzen 5 5600x, what processor were you on prior? Just for reference, PBO for some tends to give them a boost in performance while some have mentioned that it dumps a lot of power into their system, so you're advised to enable/disable PBO on a trial and error basis(if it aids your tasks performance).

Thank you for the reply!
Build:
CPU: 5600x, 2600 before which performed marginally better than average
CPU cooler: Thermalright Peerless Assassin
Motherboard: b450 s2h
Ram: corsair vengeance 2*16 3200mhz
SSD/HDD: WD_BLACK 1TB SN770
GPU: Gigabyte gaming 3060
PSU: Corsair RM650 - age 1 year
OS: Win 10
BIOS: Latest - F67d


I just did some additional looking and seems like the CPU Core Voltage (SVI2 TFN) sits 1.2V idle and drops to 1.015v at multicore stress test.
I'm wondering if that could hint that the issue is the motherboard's VRM is not efficient enough while under stress and that's why brute forcing with double the PPT yielded good results? (as it was overperforming the inefficiency?)

Thanks again!

 

[TerryLaze]

Well, what benchmarks are you comparing against?!
If your PBO numbers match the benchmarks that you have seen then reason dictates that those benchmarks where also done with PBO enabled and everything works as expected.