DDR2: Used
DDR3: New
DDR4: new
CAS Latency:
667mhz CL555
800mhz CL666
1333mhz = CL9,
1600mhz = CL11,
2133mhz = CL15,
2400mhz = CL17,
2666mhz = CL19
Pinos: DDR2 = 240pin, DDR3 =240pin, DDR4 = 288pin
Tensão: DDR2 = 1.8v, DDR3 =1.5v DDR4 = 1.2v

1600 MHz Can Compatible With DDR 3 1333 MHz / 1066 MHz
1333 MHz Can Compatible With DDR 3 1066MHz
800 MHz Can Compatible With DDR 2 667MHz / 533MHz
667 MHz Can Compatible With DDR 2 533/MHz

Why is my BIOS or diagnostic program (such as CPU-Z) showing that my memory is running at half the frequency?
The BIOS or diagnostic program usually reports the memory bus frequency, which is half of the frequency for DDR type memory. DDR (Double Data Rate) data rate provides twice the memory bus frequency. Therefore, if the memory bus speed is 800MHz and you are using DDR3-1600 memory, the RAM is running at the correct speed.

Please contact to get a better price of need batch.

Noticed:
1. Because of the arrival batches of different products, the production date and specific models and serial number is differnet. The picture shown on the mainsite is for referents. if there is fluctuation, according to the real object please!

2. Please notice wide and narrow version is randomly send out.Memory board color is randomly send out.

3.Label color, red, green, chip particle brands, HY, kingston SEC ELPIDA Micron NANYA ……. Chip 16 particles, Double sided
Double sided