RAM failing if 8 DIMMs are used

sublimerasta

Honorable
Jun 4, 2013
1
0
10,510
I am building a dedicated server, and if I use more than 6 DIMMs the server refuses to post. The first two RAM slots by the second processor give me the dreaded amber color. I have tested the RAM 1 by 1 to rule that out. I swapped the motherboard, and the same exact issue is prevalent. Lastly; I swapped power supplies to rule that out. I am out of ideas, and I could really use some help.

Intel S5500BC Motherboard
2x Intel Xeon X5570 Processors
8x Samsung 4gb DDR3 1333MHz 2RX4 ECC RAM

Also tested with 8X Hynix 4gb DDR3 1066MHz ECC RAM