2Pcs Memory Module DDR2 1GB 667Mhz PC25300 Desktop Computer DoubleSided 16Particles for AMD Item Type: Memory Module Model: DDR2 Material: Printed circuit board Memory Frequency: 667Mhz Memory Capacity: 1GB Compatible: For AMD dedicated memory Applicable Computer: Desktop Bandwidth: PC2-5300 Pin Number: 240pinNote:1. The memory is divided into memory card, DDR, DDR2, DDR3 models. Please check the following list to know what memory has been installed in your computer, and what memory you need to buy. The memory DDR, DDR2, and DDR3 are not common to each other, and the sockets are different, and you can't force to insert it in, so as not to damage the memory and the motherboard, remember! PC2100 is DDR 266 memory PC2700 is DDR 333 memory PC3200 is DDR 400 memory PC4200 is DDR2 533 memory PC4300 is DDR2 533 memory PC5300 is DDR2 667 memory PC6400 is DDR2 800 memory PC8500 is DDR3 1066 memory PC10700 is DDR3 1333 memory PC12800 is DDR3 1600 memory 2. If the memory appears: blue screen, crash, restart, alarm keeps beeping, please operate one by one according to the following methods. If fails, it is determined not compatible. a. The memory is not inserted well, or the gold finger is oxidized. Use an eraser to erase the memory gold finger and then reinsert it, or change the slot. b. The memory slot is dusty or oxidized. Use a brush and water for cleaning panel to wash it (if you don’t have the water, just brush it down). c. The memory is not compatible, try another memory. d. CMOS did not discharge, restore to the factory settings, maybe it is normal (remove the motherboard battery, and then put it back). e. The motherboard is not compatible with the CPU, try changing the CPU.