Super Talent DDR3-1600 4GB/256x8 CL9 Memory WB160UB4G9: Super Talent Overclocking memory is engineered for speed. Extreme Performance DDR2, and DDR3 DIMMs support high frequencies and low latencies for optimum performance. These products are 100% tested at their rated specs on popular enthusiast motherboards to ensure performance and reliability. Custom cast aluminum High Efficiency heat spreaders are included for optimum thermal performance. - Single modules: 512MB, 1GB, 2GB capacities- Matched pairs tested on Dual Channel motherboards: 1GB, 2GB, 4GB kits.