Robbanswe
This memory works perfecto
Samsung ecc 8gb.
M393B1K70DH0-CH9Q9 M
SKJ.7842432-8

A lot of other 8gb memory dont work.

Hello, I can confirm that 96gb of Samsung ecc 8gb M393B1K70DH0-CH9Q9 M work on this board.
 
I will comment my case, I purchased the SR2 in 2011, and it was working flawlessly with 48gb of 1600MHz GSkill 4x12 modules, suddenly in 2017 the board stopped from recognizing all the memory, sometimes 40gb, others 44gb. And I was not able to overclock it anymore, even 1Mhz, it was running at 200MHz FSB all the time, with no overvoltage in any component.
 
I swapped the E5645 xeons with no luck, same result, I tried all memory combinations, swapping all modules in all possible combinations, same result. All memory modules were fine, It seemed that two black memory slots of CPU0 were broken.
 
I was forced to leave only 3 memory sticks on the CPU0 socket in the red slots, and I left the black slots empty, and the CPU1 with all the 6 memory sticks running, total 36 gb, the reason for this was the triple channel, if I left the memory in an asymmetric configuration (40gb most of the time,44gb sometimes), the performance was ridiculous, at the point that winrar benchmark fell from 18.800kb/seg to 2.800kb/seg.
 
So I decided to purchase 2 xeons x5690, the top for this board, the memory issue was not resolved, the problem persisted.
 
Later I decided to purchase 96gb of this Samsung memory (thank you Robbanswe for your post), to see if I have more luck, and yes, the 96gb are working fine, so no damaged memory slots, no xeons damaged, no memory sticks damaged, so.... A COMPLETE MYSTERY.
 
I will not overclock anymore this board, now I have a decent cpu clock speed with the x5690s and 96gb of ram, 1600 Cienbench R15 points, and it seems that the passage of time has done its job doing the motherboard more sensitive.
 
I decided to share my experience in case it is useful to someone else and to thank Robbanswe for his message putting the memories that work.