[SOLVED] How do i assure my motherboard is running dual channel Ram

[renowebb]

MY MB is a b550m Aorus pro-p where to look in Bios to be sure?

 

[gskill support]

If you have CPUz, it will be in the 'Memory' tab.

As long as the system is working properly with memory modules in slots two and four away from the CPU, the system should be running in dual channel.

 

[--SID--]

If you installed 2 dimms, one in slot A2 and one in slot B2, it's running dual channel.

 

[svorcs]

If you installed 2 dimms, one in slot A2 and one in slot B2, it's running dual channel.

Let me just ask something, i have exactly so as mentioned A2&B2 (2x 8GBRAM)
What happens if i put 4GB ram stick inside the B1 slot? Does it cancel dual channel? Does performence of system increases or decreases? same ddr same clock...

 

[--SID--]

What happens if i put 4GB ram stick inside the B1 slot?

Probably BSODs, crashes, shutdowns, system instability etc with Ryzen. Avoid using 3 dimms.

 

[renowebb]

The reason i ask is on UserBenchmark it writes ensure that a duel channel XMP BIOS profile is enabled ?

 

[--SID--]

Check with CPU-Z.

 

[renowebb]

Cheaked it shows Dual Channel , Dram Freq of 1796.4MGz and a Lat. of 16. Why UserBenchmark wrote that

 

[Karadjgne]

Sticks in A2/B2 will show dual channel in cpu-z.
Add a stick in A1 or B1, cpu-z will still show dual channel. Add sticks in A1 & B1, cpu-z will still show dual channel.

In reality, 3x sticks is called flex mode, it'll use the dual channel ram first, as dual channel, then the remaining ram as single channel, only if it requires the extra. So with you, it'll be pure dual channel for anything 0-16Gb, and flexed dual 16Gb + 4Gb single channel if needing 16.01Gb-20Gb. Cpu-z cannot make the distinction, so labels everything dual channel unless you really mess up and stick both sticks single channel.

Most reporting software (now including Windows) will report the Data Rate, not the Dual Data Rate (DDR). 1796.4MHz =1800MHz (± % of error) Data Rate, = 3600MHz DDR.

 

[Bob.B]

The reason i ask is on UserBenchmark it writes ensure that a duel channel XMP BIOS profile is enabled ?

Post a LINK to the UBM run that shows this.

 

[renowebb]

https://www.userbenchmark.com/UserRun/47436925

 

[Bob.B]

https://www.userbenchmark.com/UserRun/47436925

I'll guess........UBM is looking at the average bench and your bench and offering a suggestion as to why your low.