Ram problems

[AntonElias]

Hey just got a new pair of ram for my PC which of course was the same i already had in the pc corsair vengeance rgb 3600mhz 16gb. As normal i installed them with no problem went into the bios and put the speed to 3600mhz with   DOCP and it booted as normal. Then i launched a game and noticed that the game rendered things slow and then had a bsod after a short while. As it booted again it just shut of and on a couple of times and then went to the setup screen. Changed the ram to default speed and it ran fine. Then i used an hour testing first with OG pair with default speed and DOCP in one dual channel at a time and did the same with new pair  and it worked even when I went back to both pairs with default speed but then at last with DOCP with both pairs and it crashed. 

Mobo is Asus prime B550 plus 

And both ram  pairs are Corsair vengeance rgb pro 3600mhz 16gb. I know both are the "AMD" version. 

[Bombastinator]

58 minutes ago, AntonElias said:

Hey just got a new pair of ram for my PC which of course was the same i already had in the pc corsair vengeance rgb 3600mhz 16gb. As normal i installed them with no problem went into the bios and put the speed to 3600mhz with   DOCP and it booted as normal. Then i launched a game and noticed that the game rendered things slow and then had a bsod after a short while. As it booted again it just shut of and on a couple of times and then went to the setup screen. Changed the ram to default speed and it ran fine. Then i used an hour testing first with OG pair with default speed and DOCP in one dual channel at a time and did the same with new pair  and it worked even when I went back to both pairs with default speed but then at last with DOCP with both pairs and it crashed. 

Mobo is Asus prime B550 plus 

And both ram  pairs are Corsair vengeance rgb pro 3600mhz 16gb. I know both are the "AMD" version. 

Cas can matter.  Cas22 3600mhz is the same kind of memory as 3200mhz cas 18 or 3000mhz cas 16.  Just has the speed raised and the timings loosened. 

[AntonElias]

30 minutes ago, Bombastinator said:

Cas can matter.  Cas22 3600mhz is the same kind of memory as 3200mhz cas 18 or 3000mhz cas 16.  Just has the speed raised and the timings loosened. 

Can you elaborate? The problem here is that rams ran fine separate even with DOCP turned on (3600mhz) but when I ran both pairs with DOCP on the pc crashed on boot. I can run both pairs on default. Both pairs are the exact same 16gb 3600mhz corsair vengeance rbg pro and yes both are the AMD version. Very weird tbh. 

[Mark Kaine]

Ryzen has often issues with more than 2 sticks... could be thats what you're seeing...

 

Also just because its the *same* ram doesn’t mean its the same batch/aka actually identical (so a second possible issue)

 

 

Try setting speeds manually,  loosen timings etc, i think you should get it to work with some tinkering and at the cost of latency and possibly speed of course. 

 

dont go over 1.4v (not recommended,  unless its Samsung bdie or something)

 

you may also post the part numbers thats on the stickers of *both* kits, it might be helpful to identify the issue further. 

 

 

 

[Bombastinator]

9 hours ago, AntonElias said:

Can you elaborate? The problem here is that rams ran fine separate even with DOCP turned on (3600mhz) but when I ran both pairs with DOCP on the pc crashed on boot. I can run both pairs on default. Both pairs are the exact same 16gb 3600mhz corsair vengeance rbg pro and yes both are the AMD version. Very weird tbh. 

Is the CAS the same?  There’s 4 different CAS numbers.  (Actually there are more but only the first 4 get published) So it will be something like 16-16-16-36 or 18-22-22-24-48 or something like that

[AntonElias]

4 hours ago, Bombastinator said:

Is the CAS the same?  There’s 4 different CAS numbers.  (Actually there are more but only the first 4 get published) So it will be something like 16-16-16-36 or 18-22-22-24-48 or something like that

Yeah both are cl18

Figured out what the issue was, the motherboard or cpu doesnt like DOCP. Could run it no problem by actually manually changing the speeds. Might work if I update the bios havent tested that yet, but the problem seem to be resolved

[AntonElias]

5 hours ago, Mark Kaine said:

Ryzen has often issues with more than 2 sticks... could be thats what you're seeing...

 

Also just because its the *same* ram doesn’t mean its the same batch/aka actually identical (so a second possible issue)

 

 

Try setting speeds manually,  loosen timings etc, i think you should get it to work with some tinkering and at the cost of latency and possibly speed of course. 

 

dont go over 1.4v (not recommended,  unless its Samsung bdie or something)

 

you may also post the part numbers thats on the stickers of *both* kits, it might be helpful to identify the issue further. 

 

 

 

Yeah it worked when I changed the speed manually, thanks for the help 

[Bombastinator]

1 minute ago, AntonElias said:

Yeah both are cl18

Figured out what the issue was, the motherboard or cpu doesnt like DOCP. Could run it no problem by actually manually changing the speeds. Might work if I update the bios havent tested that yet, but the problem seem to be resolved

That’s just the first of the 4 numbers.  The others may be different.