Asus P I-AP55T P/I-AP55T User's manual - Page 26

P/I-AP55T User's Manual Configuring System Memory If you want to add system memory, you must use the configuration options and specifications shown in this section. Memory Combinations You can configure the system memory in a variety of ways, using different combinations of SIMM modules. Using the 4 SIMM sockets there are many configuration options. The following chart shows the supported combinations. The only restrictions are: • You must use 2 sockets at a time, in sequence, i.e. SIMM 1 and SIMM 2, or all four sockets at once. • Each pair of modules must be the same size and speed and can be either single or double-sided. • Memory Specifications: Module Size: Single-sided SIMMs: 4MB, 16MB Double-sided SIMMs: 8MB, 32MB DRAM Type: Fast Page Mode or Extended Data Output DRAM Speed: 70ns or faster for 75MHz, 90MHz and 120MHz Pentiums (50 or 60MHz external clock); 60ns for 100MHz and 133MHz Pentiums (66MHz external clock). RAS access time [Trac]: 60ns - 70ns CAS access time [Tcac]: l0ns - 25ns Parity: Either parity or non-parity 2 - 6