Can't go above 3200MHz of ram speed

[KokoKaraWatashiNoRrama]

I just build a pc with a ryzen 5 5600g with a 4400 MHz (as said by the store) 16gb gskill kit. At first I enabled the xmp profile and it ran in 4000 MHz(though it restarted three times before boot) but now if i try to run it in either 3600 or 3800(xmp disabled) the pc won't boot. The fans spins and light up but nothing show in monitor. However, if I set it on 3200 it will boot.
Is 3200 the limit? I have seen people run it at 3600-3800 and even 4000. Am I doing something wrong?
PC specs:
cpu: ryzen 5 5600g
ram: gskill 2x8gb 4400 MHz
motherboard: gigabyte b550m ds3h ac
ssd: 970 evo plus 500 gb
note: when setting the speed to 3600 or 3800 i changed the infinity fabric to half of the speed.

[Cyracus]

You have to change voltages to change frequency when not using xmp. This guide has good info https://github.com/integralfx/MemTestHelper/blob/oc-guide/DDR4 OC Guide.md

[WereCat]

High speed kits rarely run easily by just enabling XMP. You are expected to tweak a lot of things manually to get it working or have all the stars align and get a motherboard for which specifically the memory kit was made and a CPU with a memory controller good enough to drive that kind of RAM.

 

Check memory overclocking guides.

[Chris Pratt]

Ryzen has infinity fabric which runs 1:1 with the memory clocks by default. However, it's rare to be able to successfully run the infinity fabric at 2000MHz, which is likely why you had issues with 4000MHz. However, you can't just disable XMP and set the clockspeed to whatever you want. There's voltages and timings that have to be set correctly as well, which is included in the XMP profile. You either need to keep XMP enabled, and then drop the memory clocks or tell it to run async with the infinity fabric instead. There's normally a performance penalty that comes with running async, but the 5600X is actually a single CCD design, so I think in practice you won't actually see a difference. 

[Mark Kaine]

That cpu doesn't support higher than 3200mhz ram officially,  so in order to achieve higher speeds you will need to overclock the ram manually  - and there is no guarantee for it whatsoever as always with overclocking. 

 

That said, I oc my ram from 3200 to 3600 and I let infinity fabric at auto, no issues, runs at 1800mhz, as you'd expect. 

 

11 hours ago, KokoKaraWatashiNoRrama said:

when setting the speed to 3600 or 3800 i changed the infinity fabric to half of the speed

As per above,  if you turn off xmp you need to set the voltage manually,  probably 1.35v should be fine,  don't go over 1.4v, as that is usually max safe voltage (unless samsung b-die)