Memory Type: DDR2, Capacity: 4GB (2GBx2), Multi-Channel Kit: Dual Channel Kit, Tested Speed: 800MHz, Tested Latency: 5-5-5-15-2N, Tested Voltage: 1.80V, Registered/Unbuffered: Unbuffered, Error Checking: Non-ECC, SPD Speed: 800MHz, SPD Voltage: 1.80V, Fan Included: No, Warranty: Limited Lifetime Aimed for the best price/performance value, every G.SKILL value memory kit is 100% screened for the maximum quality, while maintaining awesome affordability. It's the best choice to build a budget performance PC.