 "Corsair Vengeance - DDR3 8 GB: 2 x 4 GB DIMM 240-pin" " Corsair 240-pin CMZ8GX3M2A1600C9 System Memory (RAM) CDWG.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 Vengeance Blue CMZ4GX3M1A1600C9 4GB 1X4GB DDR3-1600 CL9-9-9-24 Memory" Memory - CMZ4GX3M1A1600C9B NCIX"
 Quick Specs: CAS Latency CL9 Compatibility Desktop Number of Modules 1 x 4 GB Number of Pins 240-pin Limited Warranty Lifetime Form Factor DIMM Memory Speed 1600 MHz Memory Size 4 GB Memory Technology DDR3 SDRAM Memory Standard DDR3-1600/PC3-12800 Memory Voltage 1.50 V ProductId 1019511862