http://www.flipkart.com/corsair-vengeance-ddr3-4-gb-1-x-gb-pc-ram-cmz4gx3m1a1600c9/p/itmd2rypbx4eehaf?pid=RAMD2RYPMVWCEK6E&ref=4eb78e04-d082-41a8-bc2e-fa52e6eecd14 and http://www.flipkart.com/corsair-ddr3-4-gb-1-x-gb-pc-ram-cmx4gx3m1a1600c11/p/itmdd73f2hytmhfj?pid=RAMDD73ERCTVPHZU&ref=4eb78e04-d082-41a8-bc2e-fa52e6eecd14
which is better
which is better