Asus KCMR-D12 User Guide - Page 36

2.4.2 Memory Configurations You may install 1 GB, 2 GB, 4 GB, or 8GB registered ECC/unbuffered ECC DDR3 DIMMs into the DIMM sockets using the memory configurations in this section. Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. Memory population table SR: Single Rank; DR: Double Rank; QR: Quad Rank UDIMM RDIMM DIMM0 DIMM1 DIMM2 Max MHz (1.5V) Max MHz (1.35V) -- -- SR/DR 800 800 SR/DR -- SR/DR 800 800 -- -- SR/DR 1066 1066 SR/DR -- SR/DR 1066 1066 -- -- SR/DR 1333 1333 SR -- SR 1333 1333 DR -- DR 1333 -- SR -- DR 1333 -- DR -- SR 1333 -- -- -- SR/DR 667 667 SR/DR -- SR/DR 667 667 -- QR SR/DR 667 667 SR/DR SR/DR SR/DR 667 667 SR/DR QR SR/DR 667 667 -- -- SR/DR 800 800 SR/DR -- SR/DR 800 800 -- QR SR/DR 800 -- SR/DR SR/DR SR/DR 800 800 -- QR -- 800 800 -- -- SR/DR 1066 1066 SR/DR -- SR/DR 1066 1066 SR SR SR 1066 -- -- -- SR/DR 1333 1333 SR -- SR 1333 1333 Timing Mode 1T 1T 1T 1T 1T 2T 2T 2T 2T DO NOT install DIMMs of different voltages on the motherboard at the same time, such as a combination of 1.5V DIMMs and 1.35V LVDIMMs. DIMM 0: DIMM_A1, B1, C1, D1; DIMM 1: DIMM_A2, B2, C2, D2; DIMM 2: DIMM_A3, B3, C3, D3. 2-18 Chapter 2: Hardware information