cancel
Showing results for 
Search instead for 
Did you mean: 

General Discussions

saga3475
Journeyman III
Journeyman III

No Dual Channel Mode possible, only Single Channel

Hello

 

i have following issue:i tried to setup 2 8GB Gskill Flare X 2400 DDR4 Ram Moduls into an Asus Prime B350M-A Board. I looked into the Manual which explains to put the Moduls to Dimm Socket A2 and Dimm Socket B2 to use Dual Channel Mode.

After i did this i restart but the computer didn t restart.

only when i put the moduls in socket A1 and A2 then computer starts. in cpu-z it showed single channel mode. but i have dual channel mode rams and i want to use it in dual channel.

i looked into the bios but i am not knowing how to fix it

my current system:

Amd Ryzen 5 1600 6c/12

Asus Prime B350M-A Bios 5406

Gskill Flare X 16GB Kit DDR4-2400 (2x8GB Moduls)

how can i set it up to dual channel mode?

Thanks

Bye

Saga

0 Kudos
11 Replies
elstaci
Esteemed Contributor III

Re: No Dual Channel Mode possible, only Single Channel

Can you post your G-Skill Flare-X Part number to see if it is listed in your motherboard's QVL List and to verify it is Dual Channel RAM.

0 Kudos
saga3475
Journeyman III
Journeyman III

Re: No Dual Channel Mode possible, only Single Channel

hi,

the memory is not on the list, but it always worked. not anymore after renovation. have tried crucial 4 GB memory. with dimm socket 1 and 2 it works but with dimm socket 3 and 4 it does not work.
I have changed the processor and have ryzen 3 1200s - but the same problem.
I still have more memory and have gskill aegis 3000 that didn't work with dimm socket 3 and 4 either.

I guess the mainboard is broken. Memory banks 3 and 4 defective.

i don t have another mainboard with 4 dimm sockets so i would check another board

0 Kudos
elstaci
Esteemed Contributor III

Re: No Dual Channel Mode possible, only Single Channel

Seems like the Motherboard is defective.

Have you tried just one RAM stick in A2 or B2 to see if it is recognized?

Does your computer boot up if you install RAM memory in A2 or B2?

If one RAM Stick is recognized on A2 or B2 and showing the correct amount of RAM installed, then it probably is incompatible RAM issue.

If it does try running MEMTEST86 and see if it is recognized or shows a huge amount of errors in A2 or B2 or both.

I was able to detect a bad DIMM Slot on my old Motherboard when I ran MEMTEST86 on different DIMM Slots using one good RAM Stick as a tester. On three it showed fine without errors but on one MEMTEST86 would freeze up and I needed to reboot.

0 Kudos
saga3475
Journeyman III
Journeyman III

Re: No Dual Channel Mode possible, only Single Channel

hi

i ve checked every dimm socket and i checked with different modul.

its only dimm 3 and 4 which are not working anymore.

if i put dimm in socket a1 and a2 the system is starting. but if i put dimm moduls in b1 and b2 its not starting.

then i put only one in a dimm and checked every dimm socket with only one modul. and only a1 and a2 are working.

seems like its has something to do with the 3. and 4. dimm socket :(

 

0 Kudos
elstaci
Esteemed Contributor III

Re: No Dual Channel Mode possible, only Single Channel

If it still under Warranty than better RMA the Motherboard.

For Dual Channel to work on your motherboard DIMM Slots A1&B1 and A2&B2 most be populated otherwise it will work as a single channel RAM stick.

0 Kudos
saga3475
Journeyman III
Journeyman III

Re: No Dual Channel Mode possible, only Single Channel

it has nothing to do with the mainboard because i switched the board now. it has only two dimm sockets. but there is the same problem. i can only run one modul 8GB Ram.

i think its the cpu - ryzen has problems with dual modus and ram. i only have 2400er ram so i thought it would work. but nope.

as i had a athlon x4 950 2 moduls worked fine.

everything was fine but i wantet a ryzen that was a bad decision.

0 Kudos
elstaci
Esteemed Contributor III

Re: No Dual Channel Mode possible, only Single Channel

Okay if another processor was installed and the DIMM slots work than it most likely it is a defective CPU.

If the Ryzen is less than 3 year old you can still have it replaced by AMD Warranty if you are the original Owner and it is a Retail Processor and you still have the Retailer's official Receipt.

You can open a AMD Warranty from here: https://www.amd.com/en/support/kb/warranty-information/rma-form

0 Kudos
saga3475
Journeyman III
Journeyman III

Re: No Dual Channel Mode possible, only Single Channel

Hello elstaci,

i exchanged the processor and put a Ryzen 3 1200 in the board and tested all ram moduls i had. without any error! the system is starting without any failures.

the processor has a bent pin. so it is probably defective. Unfortunately, I bought it used. so i have no guarantee.  I am not the first owner either.

unfortunately it is very small. i can see it badly. do you mean it can be repaired again?

0 Kudos
elstaci
Esteemed Contributor III

Re: No Dual Channel Mode possible, only Single Channel

Bent pins can be straightened out very carefully and it should work.

Go to YouTube and search on how to straighten out bent pins on a processor. There will be several videos on how to do it correctly without breaking the pin.

Depending on the pin, if it breaks, the processor may still work normally since many pins are redundant like the ground pins on the processor.

The bent pin may have be shorting out against another pin while installed on the CPU Socket of the motherboard.

Either way,

Good luck

EDIT: Even if you are the original Owner and you have a bent/broken pin on the processor, that would automatically void AMD's 3 year Warranty anyways.

 

0 Kudos