Asus P5P41T USB3 User Manual - Page 24

1.7.2 Memory configurations You may install 512MB, 1GB, 2GB, and 4GB unbuffered non‑ECC DDR3 DIMMs into the DIMM sockets. • You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation. • Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. • Due to the memory address limitation on 32-bit Windows® OS, when you install 4GB or more memory on the motherboard, the actual usable memory for the OS can be about 3GB or less. For effective use of memory, we recommend that you do any of the following: - Use a maximum of 3GB system memory if you are using a 32-bit Windows® OS. - Install a 64-bit Windows® OS when you want to install 4GB or more memory on the motherboard. • This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less. P5P41T/USB3 Motherboard Qualified Vendors Lists (QVL) DDR3-1333 MHz capability Vendor Crucial Crucial ELPIDA Part No. Size SS/ DS CT12864BA1067.8FF 1024MB SS CT25664BA1067.16FF 2048MB DS EBJ10UE8EDF0-AE-F 1024MB SS ELPIDA ELPIDA ELPIDA ELPIDA EBJ51UD8BAFAAC-E 512MB SS EBJ51UD8BAFAAE-E 512MB SS EBJ11UD8BAFA-AE-E 1024MB DS EBJ21UE8EDF0-AE-F 2048MB DS KINGSTON KINGSTON Micron Micron SAMSUNG KVR1066D3N7/1G KVR1066D3N7/2G MT8JTF12864AZ1G1F1 MT16JTF25664AZ1G1F1 M378B2873EH1-CF8 1024MB SS 2048MB DS 1024MB SS 2048MB DS 1024MB SS SAMSUNG M378B5273BH1-CF8 4096MB DS Chip Brand Micron Micron ELPIDA Elpida Chip NO. 9GF22D9KPT 9HF22D9KPT J1108EDSE-DJ-F J5308BASE-AC-E Timing 7 7 - - Voltage 1.35V (low voltage) - DIMM support A* B* C* •• • •• •• • •• • Elpida J5308BASE-AC-E - - •• • Elpida ELPIDA J5308BASE-AC-E J1108EDSE-DJ-F - Kingston Kingston Micron D1288JEKAPGA7U 7 D1288JEKAPGA7U 7 9GF22D9KPT 7 - •• 1.35V (low voltage) • • 1.5V •• • 1.5V •• - •• • Micron 9HF22D9KPT 7 - •• Samsung SEC 901 HCF8 - - K4B1G0846E SAMSUNG 846 K4B2G0846B- - - HCF8 •• • •• 1-14 Chapter 1: Product introduction