Dumb Server memory population question

[SPCRich]

Yes it's a dumb question, but I can't seem to find the difference between 2 options.

Given the following block diagram:



Whats the recommend population pattern for 8 sticks? There isn't any documentation on Quanta's site , but i found an Intel doc that says you can either go:

A0 B0 C0 D0 E0 F0 G0 H0

or
A0 A1 B0 B1 E0 E1 F0 F1

is the first (only populating the first slot per bank) the equivalent of single channel, where the second is equivalent of dual channel?

Intel's table:

source: https://www.intel.com/content/dam/s...ver-boards/Intel_Server_Board_S2600WT_TPS.pdf

 

[svtkobra7]

Yes it's a dumb question, but I can't seem to find the difference between 2 options.

Whats the recommend population pattern for 8 sticks? There isn't any documentation on Quanta's site , but i found an Intel doc that says you can either go:

A0 B0 C0 D0 E0 F0 G0 H0

or
A0 A1 B0 B1 E0 E1 F0 F1

up, up, down, down, left, right, left, right, B, A ?

2 CPUs + 8 DIMMs on my SMCI X9DRH would be:

P1-DIMMA1 P1-DIMMB1 P1-DIMMC1 P1-DIMMD1 P2-DIMME1 P2-DIMMF1 P2-DIMMG1 P2-DIMMH1;
where PX-DIMMY1 & PX-DIMMY2, or Y0 & Y1, relating back to your board;
so A0 B0 C0 D0 E0 F0 G0 H0

 

[SPCRich]

up, up, down, down, left, right, left, right, B, A ?

2 CPUs + 8 DIMMs on my SMCI X9DRH would be:

P1-DIMMA1 P1-DIMMB1 P1-DIMMC1 P1-DIMMD1 P2-DIMME1 P2-DIMMF1 P2-DIMMG1 P2-DIMMH1;
where PX-DIMMY1 & PX-DIMMY2, or Y0 & Y1, relating back to your board;
so A0 B0 C0 D0 E0 F0 G0 H0

LOL you forgot "select start"

I went with the a/b/c etc0 option, but on an intel sheet they show multiple ways of populating ram, so wondering what the real difference is between A0/B0/C0 and something like A0 A1, B0, B1, etc. the first option works so im not gonna screw with it, just curious if there's any difference really performance wise between the two.

 

[msg7086]

If you see a different color such as blue, populate blue first. If you see 16 blue slots, populate one per each pair.

So it'll likely be A0/B0/C0/D0/E0/F0/G0/H0.

This is likely related to rank / DPC. The former should give you more channels, and the latter more ranks (more bit width?). I'm not 100% sure though.