Wrong ram speed

[AhmadFirdaus16]

Hi, I'm a new member btw.

in asus page, asus GA502du advertised having a 2400 ddr4 ram, but mine instread running at 2667. I checked it using windows taskbar. It seems odd since the cpu, ryzen 7 3750h only support ddr4 2400 ram. Is there any solution to check my exact ram speed? Could be asus shipped the unit with flawed hardware or software issue related?

[mariushm]

Why would it be a flaw?

 

The official frequency may be the standard 2400 Mhz, but if you enable XMP or DOCP or whatever AMD's version of XMP is called, you get higher frequencies.

 

Intel processors also officially support max 2666 Mhz but you can run them just fine with higher frequency memory sticks.

[AhmadFirdaus16]

So, wich ram i should buy, 2400 or 2666 ? 

[mariushm]

Buy whatever is available.  If the motherboard can't use the memory at 2666 Mhz, it will use it at 2400 Mhz.You can run memory sticks at frequencies lower than the ones advertised on the stick.

If your laptop already has 2666 Mhz stick installed, then just buy a 2nd 2666 Mhz so they'll both run at 2666 Mhz.

If the frequencies don't match, the motherboard will run both sticks at the lowest speed both sticks support.