Asus Vintage - Manual (Page 26)

26 Chapter 2: Basic Installation
2.6.1 Memory configurations
You may install any DDR DIMMs with 64 MB, 128 MB, 256 MB, 512 MB,
and 1 GB densities into the DIMM sockets.
Memory frequency/CPU FSB synchronization
CPU FSB DDR DIMM Type Memory Frequency
800MHz PC3200/PC2700/PC2100 400/333*/266 MHz
533MHz PC2700/PC2100 333/266 MHz
400MHz PC2100 266 MHz
2.6 Installing system memory
The motherboard comes with two Double Data Rate (DDR) Dual Inline
Memory Module (DIMM) sockets. These sockets support up to 2 GB
system memory using unbuffered ECC or non-ECC PC2700/1600/2100
DIMMs.
*When using 800 MHz CPU FSB, PC2700 DDR DIMMs may run only at
320 MHz (not 333 MHz) due to chipset limitation.
P4S800-MX
P4S800-MX 184-Pin DDR DIMM Sockets
80 Pins
104 Pins
DIMM1 DIMM2