cwbsiyuanIt seems 4GB/slot and 48GB Max.I have a English sr-2 mannual in my conputer but now I am not at home.
RobbansweThis memory works perfecto Samsung ecc 8gb.M393B1K70DH0-CH9Q9 M SKJ.7842432-8A lot of other 8gb memory dont work.
subvertI've been having a similar problem to massdestructor Very particular memory slots seem to fail or only work in combination with others. I originally had all populated with 2gb DDR3-1600 PC3-12800 memory.The system will refuse to post if the memory configuration is not correct.I've spent hours debugging to figure out if it's the ram or the slots. I had thought it was the slots, but maybe it's the ram.Currently I am only able to post with 3 sticks of 2gb ram. I've tried every slot and every combination that works.I am going to try Robbanswe suggestion of the 8GB 240-Pin DDR3 SDRAM ECC Registered DDR3 1333 Samsung ram. I've ordered 2 to test with.I'll post here if I have success.