Crucial Ballistix Tactical 4GB kit (2GBx2) DDR3-1600 1.5V 240-Pin UDIMM BLT2CP2G3D1608DT1TX0

• Designed for performance enthusiasts, gamers and power users
• Enhanced heat spreader
• Advanced speeds and timings (XMP Profile)
• Black PCB
• Proven stability and reliability

Level of experience: I build all my own computers.

I bought this RAM as an upgrade for my i5-2500k system. It was easy to install, immediately recognized as dual channel by my ASRock mobo and Win7 pro. I gained immediate performance benefits , realizable when running multiple VMware virtualized OSs.