RAM: DDR3-1600 9-9-9-27 @ 1.65v ; since no Command Rate is listed you can try 1T and if problems in Memtest 2T. Most DDR3-1600 use 2 (same as 2, 2N, or 2T).
MOBO: GA-990XA-UD3
CPU: AMD Phenom II 955 BE (3.2GHz)
BIOS:
CPU NorthBridge Freq. -> 2400MHz
HT Link Frequency -> 2400MHz
Set Memory Clock -> 8 ; 8*200MHz = DDR3-1600
DRAM Configuration /Enter
1T/2T Command Timing -> Auto or 1T ; problems 2T
CAS# latency -> 9
RAS to CAS R/W Delay -> 9
Row Precharge Time -> 9
Minimum RAS Active Time -> 27
DRAM Voltage Control -> 1.65v or 1.64v (depends on menu)
CPU NB VID Control -> 1.20v
Save & Exit = Yes