Question GSkill Ram issue with 4x4gb configuration Ripjaws V F4-2800C15D-8GVRB

[Migasa]

Hello,
So to start will describe my plan before this confusing situation appeared, i had 2x4gb ram F4-2800C15D-8GVRB that i bought at May 2018 to build my gf system, i mount it in a Msi B350m Bazooka Motherboard with a Ryzen 3 2200g APU and a GTX 1060. This week bought exact same kit of rams the F4-2800C15D-8GVRB and tough would be easy to set (i know 4 sticks in ryzen drop oc performance.. was a risk we were prepared to take), anyway i put the new Rams in the the secondary dual channel slots and no post after that.. i took the rams out to test if something was wrongly mounted, but not the issue.. So now i will describe everything i tried and if it worked or not, hoping someone can solve this damm dilema..
Main System:
MSI B350M BAZOOKA LAST BIOS
RYZEN 3 2200G
Ripjaws V F4-2800C15D-8GVRB from May 2018 2x4gb
Ripjaws V F4-2800C15D-8GVRB from April 2019 2x4gb

1. All slots populated in any order (believe me, tried every possible order) - NO POST
2. Only the F4-2800C15D-8GVRB from April 2019 2x4gb in main dual channel slots - POST
3. Only 1 stick in Dimm A1/A2/B1/B2 - POST IN ONLY A2 AND B2 (Main channels) the old F4-2800C15D-8GVRB from May 2018 2x4gb post in any slot
4. One stick of each kit in Dual channel or Single channel configurations - POST ONLY IF THEY ARE IN A2 AND B2 if any stick populates A1 and B1 the system won't post
5. Three slots occupied - NO POST no matter the order
Time to get other Motherboards
AB350m Asrock with RYZEN 3 2200G LAST BIOS
Asus Prime X470 PRO with RYZEN 5 1600 LAST BIOS
6. I picked a AB350m Asrock Motherboard with only 2 Dimm Slots A1/B1 - NO POST even if i only run as single ram there is NO POST, with the old rams from May 2018 POST every try..
You Probably think faulty RAMS by some reason.. (Probably yes.. but wait for it..)
7. Time for a more recent Motherboard Asus Prime X470 PRO - POST EVERY DAMM TRY all slots populated, single slot.. dual any try..
Time to get other ram Kits and go back to MSI B350M BAZOOKA
Ripjaws V F4-2133C15D-8GVR from August 2018 2x4gb
Trident Z RGB F4-3000C16D-16GTZR from January 2018 2x8gb
Trident Z RGB F4-3000C16D-16GTZR from December 2018 2x8gb
8.The Ripjaws V F4-2133C15D-8GVR and Ripjaws V F4-2800C15D-8GVRB from May 2018 placed in any order in the 4 slots - POST
9.The Trident Z kits in the 4 slots or mixed correctly with the Ripjaws V F4-2800C15D-8GVRB from May 2018 - POST
10.The kit Ripjaws V F4-2800C15D-8GVRB from April 2019 if mixed with any ram that occupies a 3rd ram slot or 4th - NO POST

Conclusion the Ripjaws V F4-2800C15D-8GVRB from April 2019 in the Asus Prime X470 PRO the rams work always any configuration with any other kit, in AB350m Asrock rams won't work at all, in main board of the system MSI B350M BAZOOKA only work if populating A2 and B2 ONLY BOTH OR JUST ONE..
And to end my large and complex question.. The problem is the CPU RYZEN 3 2200G? the B350 chipset? or the Rams itself..?

 

[rgd1101]

oc it
or return and get 4x4GB kit

 

[Migasa]

oc it
or return and get 4x4GB kit

Tried oc and lowering timings also.. No post in the configurations i already said had no post.. what kills my brain is the fact they boot all 4 in the the x470 MB, you think is due to the chipset or even because is a ryzen 5 1600 cpu in that board?

 

[rgd1101]

so return the non working kit

 

[Calvin7]

Memory is guaranteed in the form sold. Use of exact match, same thing, identical have no guarantee to be compatible together. Such combinations may increase the chances of the memory working together over the use of random modules.

I think it is due to your choice of memory that has never been tested together before.

You can do your own testing for compatibility with no guarantees.

 

[Migasa]

Memory is guaranteed in the form sold. Use of exact match, same thing, identical have no guarantee to be compatible together. Such combinations may increase the chances of the memory working together over the use of random modules.

I think it is due to your choice of memory that has never been tested together before.

You can do your own testing for compatibility with no guarantees.

Thanks for reply, the thing i think is being misread is the fact they don't Post in single slot of A1 or B1 and should in both of b350m MBs.. i think i will try my luck and just return them and buy another kit.. if same happens i guess i'm just unlucky..

 

[Migasa]

So, yesterday i got a 2x4gb F4-2666c15d-8gvr which are listed on both Motherboards: MSI B350M BAZOOKA and AB350m Asrock. But the kit still doesn't work um the same situations.

 

[Migasa]

I'm sorry for the triple post but would like to share the fact I tested another memory kit which is confirmed as compatible in both Motherboards and result was the same, only thing in common I can find in all of this kits is the fact they are from recent manufacturing, all FEB 2019 +, every equal kit before that date works perfectly in any dimm slot.. I'm not really into conspiracy theories.. but this is really weird.. mostly the part they only won't work in the secondary slots (A1 and B1) in 4 slots MBs and won't in 2 MBs I have with only the 2 normal slots also numbered A1 and B1.. Would like to say this only happens in B350m MBS.. in the x470 I tested all worked fine..

 

[rgd1101]

bios up to date?
ram sometime do get update like everything else

 

[Migasa]

bios up to date?
ram sometime do get update like everything else

All Bios up to date.. ofc only happening with Ripjaws V that I know of.. I just would like to understand the real reason of this.. I noticed a small difference in rams PCB of recent ones, got a "S.D." in the corner of each stick, may this have any meaning? Or just random manufacturing letters? And yes I know there may some updates but in exact same models? They should at least warn this 2019 model is a little different, may need a bios update from mb manufacturer or something like that..