Asus P5K64 WS Motherboard Installation Guide - Page 39

2.4 System memory 2.4.1 Overview The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules (DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for better performance with less power consumption. The figure illustrates the location of the DDR3 DIMM sockets: IMM_A1 IMM_A2 IMM_B1 IMM_B2 128 Pins P5K64 WS 112 Pins P5K64 WS 240-pin DDR3 DIMM Sockets Channel Channel A Channel B Sockets DIMM_A1 and DIMM_A2 DIMM_B1 and DIMM_B2 This chipset officially supports DDR3 1066/800. With the ASUS Super Memspeed Technology, the motherboard supports up to 1333MHz and provides more ratio setting items than the chipset officially supports. Refer to the table below for details. FSB 1600 1333 1066 DDR3 1600 1333 1200 1000 800 1333 1111 1000 833 889 2.4.2 Memory configurations You may install 512 MB, 1 GB, and 2 GB unbuffered non‑ECC DDR3 DIMMs into the DIMM sockets. Recommend memory configuration Mode DIMM_A1 Single-channel - Dual-channel (1) - Dual-channel (2) populated DIMM_B1 populated Sockets DIMM_A2 populated populated populated DIMM_B2 populated populated populated ASUS P5K64 WS 2-13