Question New ram 4800mhz in BIOS not 5600mhz as on box / listing

[sentur]

I've installed brand new Corsair RAM, listing says its 5600MHz.

The BIOS is saying it's 4800MHz. Is that right?

My mother board is ASUS TUF GAMING B650 which says it can run speeds of 5600MHz DDR5. Is it even worth trying to match the advertised speed? I do a lot of 3D rendering in C4D and Blender.

 

[helpstar]

enable EXPO profile in BIOS

[Motherboard]How to optimize the Memory performance by setting EXPO in BIOS? | Official Support | ASUS Global

 

[Misgar]

4800MT/s is probably the default JEDEC speed for your RAM without overclocking. At this setting, your computer is pretty much guaranteed to boot up normally and load Windows, Linux, etc.

If you want to try your hand at XMP (eXtented Memory Profile) overclocking, you can select XMP/D.O.C.P/EXPO in the BIOS and choose from the available profile(s), e.g. 5600MT/s (Mega Transfers per second).

XMP is the sepcification used for Intel CPUs. D.O.C.P/EXPO settings apply to AMD CPUs. Most RAM is only specified with XMP, but usually works OK at the same overclock speed on AMD systems.

At XMP 5600MT/s, the true memory clock speed is half that figure, i.e. 2800MHz, as indicated in CPU-Z, Aida64, etc. DDR (Double Data Rate) RAM transfers data on both the rising and falling edges of the memory clock signal. Hence 2800MHz clock rate x 2 = 5600MT/s data rate.

There is no guarantee your particular CPU/mobo combination will be stable at higher XMP speeds (usually above 6000MT/s) but you should be pretty safe at 5600MT/s.

It's advisable to boot up the computer from a MemTest86+ USB stick and run the test for a few hours, to check for stability at the new XMP speed. If any errors are reported, your system could crash during normal operation and may need adjusting.
https://memtest.org/

If you can't achieve 5600MT/s with the automatic XMP settings, manually relax the CL (CAS) timing and increase the value slightly, e.g. change from CL36 to CL37 or CL38. Looser timimgs should help stabilse the overclock.