Pny kits printed circuit board

CORSAIR XMS3 DHX 4GB 2 X 2GB PC3-10666 1333MHz 240-pin DDR3 CL9 Dual Channel Desktop Memory Kit ? TW3X4G1333C9DHX Description: Sporting Corsair's signature fin memory heat sink and patented heat-removing printed circuit board ... great memory, stable, but i'm running at stock 1333mhz, all in all great memory, i use to be a kingston brand, then i changed to pny, now corsair, my favorite so far is the corsair, love the heat spreaders, awsome, will buy again, great shipping ...