Problems Adjusting my memory speed

[James Fin]

Hey y'all

Here's my specs first:

• ASUS ROG Strix B450-F Gaming
• Cooler Master MasterBox Lite 5
• Corsair Vengeance LPX (4 x 16 GB)
• Samsung 970 EVO Plus
• KFA2 GeForce GTX 1650 Super EX
• Corsair RM650x
• AMD Ryzen 7 3700X

I've been tinkering at the BIOS of this build for about 2 weeks now. The CPU i've got down to behave pretty well now. I've been experiencing some trouble when trying to adjust my RAM speed tho. According to CPU-Z as well as Corsair's own webpage, the SPD of it is 2133 MHz at 15-15-15-36 and 1.2 V. That's also what it is running at now.

 

Now in the ROG's BIOS, in the Ai Tweaker options, i have the option to activate Asus's DOCP, which correctly recognises frequency and latency as well as voltage. I turned this own, tried saving and rebooting and the PC shuts off on its own mulitple times (and its one of those "click" and suddendly no more power shut down), I get no POST on every try and after multiple tries, it turns on without having changed anything according to CPU-Z and task manager. When I go into the BIOS again, the options are still the same, but the memory is running at 2133 MHz.

 

Anything I'm doing wrong? I've tried manually adjusting the values aswell, same result.

 

THanks for all of your help

[Jurrunio]

3 minutes ago, James Fin said:

Asus's DOCP,

It's not from Asus, it's from Intel (XMP) and AMD copied it over (DOCP). The profile XMP and DOCP applies is from the memory kit vendor so whatever you call it, it's not from Asus.

 

4 minutes ago, James Fin said:

Now in the ROG's BIOS, in the Ai Tweaker options, i have the option to activate Asus's DOCP, which correctly recognises frequency and latency as well as voltage. I turned this own, tried saving and rebooting and the PC shuts off on its own mulitple times (and its one of those "click" and suddendly no more power shut down), I get no POST on every try and after multiple tries, it turns on without having changed anything according to CPU-Z and task manager. When I go into the BIOS again, the options are still the same, but the memory is running at 2133 MHz.

 

Anything I'm doing wrong? I've tried manually adjusting the values aswell, same result.

2 DIMM per channel setups (especially with capacity this high) is hard on the board, so not surprised that a premium budget board like this doesnt work with it. Not even a Ryzen problem at this point, Intel platform does the same.

[Hairless Monkey]

Link the RAM you are using?

[Haro]

15 minutes ago, James Fin said:

When I go into the BIOS again, the options are still the same, but the memory is running at 2133 MHz.

Update the bios 

Set the soc to 1.1 and dram to 1.35  

Clear the cmos

Try that

Edited June 15, 2020 by TofuHaroto

[James Fin]

@Jurrunio you're absolutely right, I'm sorry. AMD'S DOCP recognises Corsair's memory profile.

 

Is there anything I can do about the dual DIMM per channel setup? Is it even worth it, considering that it might make the system unstable? Thanks a lot for your help

 

 

[James Fin]

@HairlessMonkeyBoy https://www.corsair.com/eu/en/Categories/Products/Memory/VENGEANCE-LPX/p/CMK32GX4M2B3000C15

 

[Jurrunio]

14 minutes ago, James Fin said:

Is there anything I can do about the dual DIMM per channel setup? Is it even worth it, considering that it might make the system unstable? Thanks a lot for your help

You could try manually setting up the timings if you have time (a lot of time, since fully stress testing this much memory takes half a day with only an 8 core CPU), or lower the frequency with the same timings and voltage in the XMP profile (for example stock timings is 16-18-18-38 at 1.35V, you manually enter these into the memory settings and select 2933MHz instead)

[Tristerin]

From what I know Ryzen hates CL15.  And from my experience using 4 sticks - OCing anything past memory controller chips on CPU and mobo are not easy (I am unable too).