General description The 4X 2GB DDR2 RAM Memory operates at 667MHz (PC2 5300) and is designed for laptops. This memory module is compatible with various DDR2 specifications and is ideal for enhancing your laptop's performance. Technical specifications Memory Type: DDR2 Capacity: 2GB per module Speed: 667MHz (PC2 5300) Voltage: 1.8V Pin Count: 200 pins SODIMM Size: 7 x 3 cm Compatibility and accessories Compatible with DDR2 533MHz (PC2 4200) Compatible with DDR2 800MHz (PC2 6400) Compatible with DDR2 1066MHz (PC2 8500) Commonly recognized memory limits: Windows XP (around 3GB), Windows 7 32Bit (around 2.26-4.5GB), Windows 7 64Bit (around 8-16GB) Other information Package Contents: 4 x Memory modules Note: Color may vary due to different batches and displays Measurement error allowed: +/- 1-3 cm