Issues after RAM upgrade

[mopman94]

Previously I've had 16GB RAM in two 8GB with a 3000MHz clock speed and timings of 15-17-17-35. I've just upgraded adding two more to give me 32GB with exactly the same timings and frequency but I am having problems.

 

When trying to boot after the change it kept crashing instantly,  on the third attempt it booted in safe mode, this reduced the rams frequency to 2133MHz and set the timings to 15-15-15-36, the PC is running stable like this but its obviously not correct.

When i go into the BIOS to set everything back to how it should be the PC crashes instantly and the loop above starts again. What's going wrong here?

[PlayStation 2]

Before we go on, have you updated your motherboard's BIOS? Ryzen can really have a hard time with RAM compatibility on older BIOS revisions on many boards, so make sure that's not a factor.

[boggy77]

ryzen (especially 1000 and 2000 series) struggle a bit more to run 4 sticks of ram. so while you were getting 3000 with two sticks, you might have to reduce the frequency a bit (try 2933), or increase the SOC voltage a bit (try 1.1)

[mopman94]

Thanks for the replies, so this is weird. I've swapped the RAM over so the new stuff is in slots 2 & 4 and the old stuff is in slots 1 & 3 and it has booted up fine at 3000mhz, it has set itself to 16-17-17-35 which isn't quite right but it hasn't crashed. Run Prime64 and still no crash so it might be ok now?

[Tido_III]

11 minutes ago, mopman94 said:

Thanks for the replies, so this is weird. I've swapped the RAM over so the new stuff is in slots 2 & 4 and the old stuff is in slots 1 & 3 and it has booted up fine at 3000mhz, it has set itself to 16-17-17-35 which isn't quite right but it hasn't crashed. Run Prime64 and still no crash so it might be ok now?

This is good to know as i was going to upgrade same as you (2 x 8Gb 3000Mhz up to 4 x 8Gb 3000Mhz) so if it goes wrong i'll remember that you swapped them round and got it working....sort of.

 

On the timings, i'm sure you've checked and got totally matched sticks but have you doubled checked that the new sticks are definitely C15 and not C16? Are you using XMP or you set those timings manually?

 

When i upgraded my board from A320M to X570A i had issues initially with it detecting the RAM until i restarted several times. Would not boot or post initially. Then detected the sticks on 3rd time and it reset to default 2133, enabled XMP and had no issues running 3000 (even OC to 3200) at C16 on Corsair Vengeance LPX