The memory I got from Dell was manufactured by Hynix Semiconductor(Hyuandai Electronics)
The specs are....2 x 4Gig, DDR3-SDRAM, 1333 MHz.
Well the computer is noticably faster. Programs load up faster, web pages load up almost instanly, music loads up into programs really quick....I'll be able to work with larger music programs, meaning more recording tracks, more instruments, effects such as reverb and delay soak up memory, the music sample programs I have eat up as much memory as they can get. No I'm not going back to 4 gigs any time soon.