 "Corsair Vengeance - DDR3 8 GB DIMM 240-pin" " Corsair 240-pin CMZ8GX3M1A1600C10 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 XMS3 - DDR3 8 GB : 2 x 4 DIMM 240-pin" " Corsair 240-pin CMX8GX3M2A1600C9 System Memory (RAM) CDWG.com
"The XMS3 family is Corsair's mainstream line of performance DDR3 memory. These modules allow users to experience outstanding memory performance and stability." 