AnsweredAssumed Answered

Ryzen 3600 and Asus Prime B450-A crashes + RAM timings

Question asked by mattjc7 on Sep 4, 2020
Latest reply on Sep 5, 2020 by swedishgoth

Hello all,


First of all, I'm glad to be on team red! I'm Matt, I built PCs over 10 years ago but recently came back with a pre-built due to disability. That aside, I had some issues with stability and I'd like to explain how I solved them to help anyone else plus ask a question about RAM timings. It'd be great to discuss my issues/what I could improve upon and also some advice on getting my RAM timings down would be excellent.


Please let me know if I haven't provided enough information.


Many thanks,



CPU: Ryzen 5 3600

MB: Asus Prime B450-a/CSM

BIOS: Current 2202, previous 20xx

RAM: CM4X8GD3200C16K4 x2 previously at 2133, now 3200 - see below

GPU: MSI RX5700XT mech OC

OS: Win10 64bit

Cooling: Wraith AMD spire (soon to be AIO)


Issue 1

System instability on Prime 95 small after a minute, blend after 5 minutes

HW info log showed that on crash the CPU voltage and clock multiplier were not adjusting

Temps went way over max = crash


Resolution 1

Updated chipset drivers - no real improvement but they were overdue

Flashed BIOS to 2202 from 20xx (notes on update state: improved stability)

Prime95 now stable for 30 minutes at present (big improvement!)

Temps are capped and the BIOS now limits clock speed and voltage


It's almost like before, the old BIOS was like: "THIS IS FINE!" - as the house burns down...



Issue 2 (help please!)

My RAM was set to 2133mhz as standard and it was advertised as 3200



Went to BIOS and changed profile from "auto" to DDR4-3200

I didn't change anything else here, any thoughts?

Note - I couldn't find XMP

Again stable in Prime 95 but I'd like to know if I can optimise here? HWINFO says VDD is 1.1v

I've tried the DRAM calculator but I'm just not 100% on how to input my details