MICRON 4GB (2x 2GB) PC3 1600 DDR3 1600MHZ 240 PIN PC3 12800 ????????Good?

Hi guys i am building a PC using the Phenom quad core. I was just wondering if this RAM is good, quality and performance wise. And also what does it mean by semi conductor???Made with Micron semiconductor modules - this item is not Micron retail. All modules made with Micron Technology semiconductors (MT) for quality and reliability.