 "Corsair Vengeance - DDR3 8 GB : 2 x 4 SO-DIMM 204-pin" " Corsair 204-pin CMSX8GX3M2A1600C9 System Memory (RAM) CDW.com
"Vengeance Low Profile heat spreaders have a reduced height of 1.03". They're designed for high-performance systems with extra-large CPU coolers, small form factor system builds, or any other space-constrained application where you need high-performance memory but standard Vengeance modules might not fit." 
 "Corsair - DDR3 4 GB SO-DIMM 204-pin" " Corsair 204-pin CMSO4GX3M1A1333C9 System Memory (RAM) CDW.com
"CMSO4GX3M1A1333C9 is Corsair's mainstream SODIMM memory solution for DDR3 laptops. Designed for notebooks, mini-PCs and netbooks, Corsair's high density SODIMMs allow users to maximize memory bandwidth and minimize performance bottleneck to deliver superior user experience." 