I have your X5DA8 motherboard with PC2100 memory, but BIOS only displays memory speed as 200 instead of 266 in POS. How can I get the memory to run at full rated speed?
The memory bus speed is determined by the CPU Processor system bus speed. If you want the memory to run at full rate speed of 266, you must use a 533MHz system bus speed processor. Please upgrade to the faster processor and the memory bus speed will increase.