I upgraded from a Ryzen 5 3600 to the new 5600X today. I was running 4x8GB DDR4 RAM. With the 3600 and it worked fine, dual channel/32GB and all. With 5600X it only allows me to put RAM in the first two slots (A1/A2). I did test all four sticks in (A1/A2) and they work perfectly. No matter what I put in (B1/B2) the mobo doesn't see the sticks. And yes, the manual recommends using (A1/B1) or (A2/B2) for dual channel mode. So now I'm stuck in single channel/16GB on the two sticks in (A1/A2).
Mobo [X570 AORUS ULTRA (rev. 1.0)]:
https://www.gigabyte.com/Motherboard/X570-AORUS-ULTRA-rev-10#kf
BIOS Rev: F31e (2020-10-30)
RAM [HyperX Predator Black 16GB 3200MHz DDR4 CL16 DIMM XMP Desktop Memory HX432C16PB3K2/16] (used 2 kits for 4 total sticks):
https://www.amazon.com/Kingston-Technology-HyperX-HX432C16PB3K2-16/dp/B01GCWQ8VO
Hopefully a BIOS revision will come out and fix this particular memory?
Mobo [X570 AORUS ULTRA (rev. 1.0)]:
https://www.gigabyte.com/Motherboard/X570-AORUS-ULTRA-rev-10#kf
BIOS Rev: F31e (2020-10-30)
RAM [HyperX Predator Black 16GB 3200MHz DDR4 CL16 DIMM XMP Desktop Memory HX432C16PB3K2/16] (used 2 kits for 4 total sticks):
https://www.amazon.com/Kingston-Technology-HyperX-HX432C16PB3K2-16/dp/B01GCWQ8VO
Hopefully a BIOS revision will come out and fix this particular memory?
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