VisionTek's High Performance Adrenaline Series DDR2 memory is the seamless PC upgrade. Whether just refreshing an existing desktop or installing a new operating system, Adrenaline Series DDR2 memory from VisionTek offers a burst of performance. Either in single slot or dual slot configuration, VisionTek Adrenaline Series DDR2 memorystrictly follows the JEDEC standard and is built and tested with speed and reliability in mind. Whether it is used for productivity, social networking, high performance 3D PC Gaming, and streaming video over wireless networks, VisionTek's Adrenaline Series DDR2 Desktop memory is ideal. Timing is 5-5-5-15 for PC2-5300, and 5-5-5-18 for PC2-6400 memory. Product Type: RAM memory Capacity: 4 GB Memory Type: DDR2 SDRAM - DIMM 240-pin Upgrade Type: Generic Data Integrity Check: Non-ECC Speed: 800 MHz ( PC2-6400 ) Latency Timings: CL6 ( 6-6-6-18 ) Features: Unbuffered Voltage: 1.8 V Manufacturer Warranty: Limited lifetime warranty Capacity: 4 GB Upgrade Type: Generic Type: DRAM Technology: DDR2 SDRAM Form Factor: DIMM 240-pin Speed: 800 MHz ( PC2-6400 ) Latency Timings: CL6 ( 6-6-6-18 ) Data Integrity Check: Non-ECC Features: Unbuffered Voltage: 1.8 V Compatible Slots: 1 x memory - DIMM 240-pin Service & Support: Limited lifetime warranty