Question RAM is showing at different speeds in BIOS and certain games crash when upgrading RAM

[Scotty278126]

Last month I bought my son a Thermaltake Stealth Air AMD Ryzen 5 5600X RTX 3070 with 16GB of RAM and ASUS TUF GAMING B550M-PLUS (WIFI)

The supplied RAM in the PC was Thermaltake Toughram XG 2 x8GB 3600Mhz (despite the specs on the website showing it should come with 3200MHz ram)

Anyway, i went to upgrade the ram but there was no 2 x 8GB DIMMs avaialable so I bought 2 x 16GB Toughram XG 3600Mhz (so same speed ram but different size to the ram that came with the PC)

So with 48GB installed, games like fortnite and GTA started to crash. I tried different combinations of RAM sizes in the 2 channels but still didnt fix it. Even with just the 2 x 16GB dimms installed the games still crashed. When i went back 2 x 8GB the games ran fine

I did notice the latency between the 8GB and 16GB dimms are different. Could this be the issue?

when i only have 2 x 8GB dimms, the Asus BIOS says the 16GB isDDR4 3600MHz but running at 2666Mhz

when i add the 2 x 16GB 3600Mhz , it now reports the total ram is 48GB but DDR4 is 2666Mhz and the 16GB sticks are running at 3200MHz\

In windows, it says the 48GB is running at 3600MHz

I have latest BIOS ver and motherboard chipset installed.

DOCP is set and i selected DDR4 3600Mhz in the BIOS and the voltage is correct. Any ideas why the Dimms are not showing as 3600Mhz?

In each of the dual channels i have 1 x 8GB and 1 x 16GB. Can someone also tell me if i should have the 2 x 8GBs in one channel and the 2 x 16GB together in the other channel?

 

[Lutfij]

Welcome to the forums, newcomer!

ASUS TUF GAMING B550M-PLUS (WIFI)
Can you check and see what the BIOS version for your motherboard is at this moment of time? As for the ram,
Anyway, i went to upgrade the ram but there was no 2 x 8GB DIMMs avaialable so I bought 2 x 16GB Toughram XG 3600Mhz (so same speed ram but different size to the ram that came with the PC)
You shouldn't mix and match sticks/kits of ram...only leads to anomalies. Work with one ram kit only, either the one that came from the factory(as you'd purchased initially) or the one you purchased later.

Also, which slots are you populating on the motherboard?

 

[Scotty278126]

Dimm_A1 has 16gb, Dimm_A2 has 8Gb, Dimm_B1 has 16Gb and dimm_B2 has 8GB

Ive been to the Asus site and ,2806 is the latest version which i have installed.

When i put just 32gb into pc (the 2x16GB sticks into dimm_a2 and b2 as per the manual) games from epic games like Fortnite and GTA crash and a few min of play.

When i remove everything and put only the original 2 x 8gb sticks into A2 and B2, they play fine.

 

[Zerk2012]

Dimm_A1 has 16gb, Dimm_A2 has 8Gb, Dimm_B1 has 16Gb and dimm_B2 has 8GB

Ive been to the Asus site and ,2806 is the latest version which i have installed.

When i put just 32gb into pc (the 2x16GB sticks into dimm_a2 and b2 as per the manual) games from epic games like Fortnite and GTA crash and a few min of play.

When i remove everything and put only the original 2 x 8gb sticks into A2 and B2, they play fine.

Turn off PC, clear CMOS, use just the 2 16gb sticks in correct spots per manual, boot into BIOS, enable DOCP, manually change only the speed from 3600 to 3200, save exit.
Try running games again.