Less chips better memory controller lower speed

[ewitte]

Memory in question: G.SKILL F4-3600C16Q-64GTZNC kit (4x16GB Hynix)

 

I recently had PSU issues that damaged my MB so I side-graded from a 2950x to a 3900X.  I also dropped from 4x16GB to 2x16GB RAM.  On the old setup I was stable at 3400Mhz on 4 chips (dropped to 3333Mhz just to be safe) just by choosing XMP, voltage and the speed.  On the new Motherboard I can set 3400 with 2 chips it doesn't post, I can set 3333 it gets memory errors.  Any setting that would help besides SoC (I boosted a little)?  Its been a long time since I've ran a Gigabyte board.  Components below

 

Old

X399 Taichi

2950x

4x16GB in quad channel

 

New

Gigabyte Aorus Pro Wifi X570

3900x

2x16GB in dual channel.

BTW I haven't tested to see which ones are better of the 4 yet and still undecided if I want to downgrade on RAM.  I think my old PSU issue caused a slow memory leak which I think is why I felt I needed it in the first place.  Running 3200Mhz right now it hasn't had any issues.  Very fast especially now that it is back on the custom loop.

 

[boggy77]

are you running them in slots 2 and 4?

[ewitte]

Running in A1, B1 (1,3). 

[ewitte]

Update:

I put the other two chips in and it posts without issue at 3600 (first try).  I'm unsure if it is the chips because I made other changes.  I've connected the 2nd 4-pin CPU power cable and put them in 2,4 instead of 1,3.  I'll have to test them later to see if I need to do RMA as G.SKill has the MB on the QVL list and I even had an odd BSOD at 3200.

[GoldenLag]

4 minutes ago, ewitte said:

put them in 2,4 instead of 1,3. 

2 and 4 would be what is specified in the manual iirc. 

 

running in other configurations that arent defined by the manual is likely to have less clockspeed. 

[ewitte]

Interesting because the manual appears to me to say 1,3 OR 2,4 maybe I'm missing that part.  Either way it seems fine now and I need to validate the other 2 if I'm going to sell them.