Please note: this memory is Only for AMD motherboard, it does not fit ECC Server . 1333 MHz can be with DDR 3 1066 MHz Type: DDR3 Function: Non-ECC Frequency: 1333MHz Number of Pins: 240pins Capacity: 4GB Voltage: 1.5V 1333MHz =CL9 Unbuffered, Non-ECC, & Non-Registered DDR3 1333= PC3-10600 Pins of Memory Ram DDR3 for Desktop =240 pins Different batches, product appearance and color may be different, does not affect the color:Green Material:PCB size:13.3 x 3CM Package Contents: 1 x Memory Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.