Sabertooth x79 recognize all DIMMS but show less total

[geostant]

I got a sabertooth x79 a while now (4 year ?)
Had it with a Corsair 4x4GB (CMZ16GX3M4A1600C9) without issues.

Bought another 4x4GB set a week ago (I know that it's not manufactured any more, yet I had to have the same specs to combine the extra 4 slots).

Plugged them and I can see that A1 + A2 + C1 + C2 are OK and B1 + B2 + D1 + D2 are ABNORMAL.

Getting into the DIMMS I can see all the properties and size, yet the total is only 16G and not 32G.

I noticed that the old DIMMS are XMP 1.2 and the new ones are 1.3
also there are some differences in the timing - yet both are 9-9-9-24

Total is 16G but all 8 DIMMS are listed

Spoiler

DIMM from the old 4x4 (notice that it's XMP 1.2)

DIMM from the new 4x4 (XMP is 1.3 + some other timing differences)

 

[Tradesman1]

No guarantees when mixing DRAM, Might try the DRAM voltage to 1.55 and the VCCSA to 1.23

 

[geostant]

No guarantees when mixing DRAM, Might try the DRAM voltage to 1.55 and the VCCSA to 1.23

They are of the same model,
just different versions (didn't knew that there are versions - otherwise wasn't ordering)

 

[Tradesman1]

Same - same, if not from the same package, they weren't tested to play, so no guarantees

 

[geostant]

No guarantees when mixing DRAM, Might try the DRAM voltage to 1.55 and the VCCSA to 1.23

Didn't worked out,
Thanks anyway for the try

 

[geostant]

No guarantees when mixing DRAM, Might try the DRAM voltage to 1.55 and the VCCSA to 1.23

Didn't worked out,
Thanks anyway for the try

 

[Tradesman1]

Try VCCSA to 1.27

 

[geostant]

Try VCCSA to 1.27

Still no go,
tried with both RAM V. as 1.55 and as 1.5
and with 2 different speeds (1333 and 1600)

 

[geostant]

Bought a third set from Amazon, this time it's XMP 1.3 as the previous set.
I still doesn't get the whole 32GB RAM as I expected.

On the bios I noticed that 4 slots appear as ABNORMAL as before but this time all the clocking settings are identical except for one (DRAM CKE) :