BSOD on new build. crashes constantly. Very unstable

AMD Ryzen 7 3700X
X570 phantom gaming 4S Mboard
GEForce 1660 TI graphics

Windows 10 Pro version 2004

What PSU do you have?

Seasonic FOCUS PX-650

Hello and welcome to Ten Forums

There appears to be a mismatch of your memory modules. This could explain your crashes which are all hardware related. It is strongly advised to use a matched pair of memory modules for dual channel memory. Were they bought as a matched pair?

PartNumber : 18ASF2G72AZ-2G6E1
PartNumber : 18ASF2G72AZ-2G6B1

Take one of the memory modules out and see if the BSODs go away.

They were supposed to be the same. I've attached a picture of the memory modules. I'll try with just one and see what happens.

- - - Updated - - -

Can someone explain the difference between them? Everything looks the same except for the number beginning with MTA on the left hand sticker. I'm running now with just the module ending in "ZG" and it appears stable. Will let it run for a while then try the other module.

- - - Updated - - -

The other module is not stable. System BSOD almost immediately. Weird because when I had both in the system passed the microsoft memory diagnostic. So it appears to be a memory problem. If any of you can explain the difference between the modules, I would appreciate it.

Thanks for the help.

I guess to be thorough I must ask if you tested both modules in the same slot. This is because it is possible that the slot on the motherboard can have a problem.

Regarding the differences, if any, I can't comment - matched pairs should be sold as a pair and will have matching part numbers. It looks like they were sold as the same memory type but not from the same manufacturing batch. Small differences in components used to make the module can lead to problems when trying to make them work in a dual channel mode. For this reason you should always buy a matched pair not 2x individual modules.

Yes I tried them both in the A2 slot, which is what the mboard docs suggest.

Given that the machine is grossly unstable with just the "E1" part, perhaps it is just bad even though the machine passed with microsoft memory diagnostics with both chips installed?

nradisch said:

Yes I tried them both in the A2 slot, which is what the mboard docs suggest.
Given that the machine is grossly unstable with just the "E1" part, perhaps it is just bad even though the machine passed with microsoft memory diagnostics with both chips installed?

Yes, that is a possibility. I often find the memory diagnostic checks have false positives and the only reliable way is to remove or replace modules to test. In your case I would say it is conclusive - the E1 module is bad. You should try and get it replaced under warranty.

It's new so I can return it for a replacement. Thanks again.