Question Asrock 450 Pro4 - 32 GB does not run with 3200 Mhz

[Joker269]

Hello,
I have a problem with my B450 Pro4
When I bought the board new, I had only 16 GB Ram installed. The RAM was of type 16GB Corsair Vengeance LPX LP black DDR4-3200 DIMM CL16 Dual Kit. These 16 GB ran without problems with 3200 Mhz.
Now I upgraded the board again and installed another 16 GB RAM of the same type. But I can't run the 32 GB with 3200 Mhz anymore. In the BIOS I loaded the XMP profile DDR4-3200 16-18-18-36 1.35V. But I can't get beyond a clock speed of 2800 Mhz. Can anyone tell me what this is due to? Does the board perhaps not supply enough voltage to run 32 GG at 3200 Mhz? Thanks for your help.
Rgds
Chris

 

[kurdtnz]

Sorry,just to clarify, was the first set of 3200mhz RAM you had 2x8 (16gb) and worked fine?, then did you add another 2x8 (16gb),(so now 4 sticks with a total of 32gb,) .......................if that makes sense?

 

[kurdtnz]

Also,what CPU do you have?

 

[kurdtnz]

https://www.asrock.com/MB/AMD/B450 Pro4/index.asp#Specification

Here is the page for your RAM compatibility/configuration

 

[Joker269]

Also,what CPU do you have?

Hello,
thank you for your quick reply. Yes, i have now used all 4 banks. Each with 8 GB Ram. As i said, 2 banks each with 8 GB worked fine with 3200 Mhz.
My CPU is a AMD Ryzen 5 2600 Six Core with 3,4 Ghz - Pinnacle Ridge.

 

[kurdtnz]

Im no expert but I think that if you buy 2 sets of dual RAM and try and work all of them together there can be issues,(even when they are the same model/speed/manufacturer etc.) But please wait for someone with more expertise to advise you.

 

[Delphnix]

I had the exact same problem with the exact same board and cpu. The only difference was my RAM was from GSkill. It was rated for 3200 and I could run two sticks of 8GB no problem but when I installed the other 2 sticks I had a problem. Like you I could only get all 32GB to run at 2800Mhz.