Question Can't go over 3333MHz on a 3600MHz kit

[Castler]

Hi there!

Originally I had 2 modules of this ram module:
HyperX Fury RGB, 16GB, 3600MHz, DDR4, CL17 - HX436C17FB3A/16

Back then I was able to get to 3530MHz, but never up to 3600MHz.

Today I installed 2 extra modules of a RAM that's almost identical. The only technical difference is the CAS Latency:
Kingston Fury Beast, RGB, 16GB, 3600MHz, DDR4, CL18 - KF436C18BBA/16

Now, I'm not able to run my RAM at speeds over 3333MHz. Even if I increase the voltage to 1.35, 1.4, 3400MHz won't boot, telling me that POST failed.
My config is:
Asus TUF Gaming X570-PLUS/BR
AMD Ryzen 9 5900X

I tried to capture some of the BIOS configurations:

 

[ex_bubblehead]

This is perfectly normal with mismatched pairs and 4 slots populated.

 

[Castler]

This is perfectly normal with mismatched pairs and 4 slots populated.

Right, Is there any way to force higher frequencies? 3333MHz is more than enough for me but I just wanna know if it's possible.

 

[ex_bubblehead]

Possible. Possibly (that's the only answer there is for this). Should you do it? No. Take what you get and call it a win. Anything more only amounts to a few fractions of a percent improvement for a many times reduction in reliability.

 

[geofelt]

Right, Is there any way to force higher frequencies? 3333MHz is more than enough for me but I just wanna know if it's possible.

You are fortunate that mismatched ram is running at all.
4 sticks is harder for the motherboard to manage than 2.

Ram faster than 2400 or so is technically overclocked.
Your ram specs say 1.35v.
You need to do the overclocking yourself The ram XMP settings are not sufficient.
If you want, select the specs you want and try increasing the ram voltage on the bios to higher than 1.35v. increase in small increments.
You may have to go as high as 1.4-1.50v.
When done,
Run memtest86 or memtest86+
They boot from a usb stick and do not use windows.
You can download them here:

MemTest86 - Official Site of the x86 Memory Testing Tool

MemTest86 is the original self booting memory testing software for x86 and ARM computers. Supporting both BIOS and UEFI, with options to boot from USB.

www.memtest86.com

Memtest86+ | The Open-Source Memory Testing Tool

Memtest86+ is an advanced, free, open-source, stand-alone memory tester for 32- and 64-bit computers (UEFI & BIOS supported)

www.memtest.org

If you can run a full pass with NO errors, your ram should be ok.

Running several more passes will sometimes uncover an issue, but it takes more time.
Probably not worth it unless you really suspect a ram issue.

 

[maikutech]

Hi there!

Originally I had 2 modules of this ram module:
HyperX Fury RGB, 16GB, 3600MHz, DDR4, CL17 - HX436C17FB3A/16

Back then I was able to get to 3530MHz, but never up to 3600MHz.

Today I installed 2 extra modules of a RAM that's almost identical. The only technical difference is the CAS Latency:
Kingston Fury Beast, RGB, 16GB, 3600MHz, DDR4, CL18 - KF436C18BBA/16

Now, I'm not able to run my RAM at speeds over 3333MHz. Even if I increase the voltage to 1.35, 1.4, 3400MHz won't boot, telling me that POST failed.
My config is:
Asus TUF Gaming X570-PLUS/BR
AMD Ryzen 9 5900X

I tried to capture some of the BIOS configurations:

Send the ram stick back with the lowest cas latency, and get the other same hyper x with the same specs.
Hopefully the asus mobo will allow you to go to 3600mhz while adjusting the voltages carefully in uefi.