http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100007611%20600006069&IsNodeId=1&bop=And&CompareItemList=147%7C20-220-557%5E20-220-557-TS%2C20-231-550%5E20-231-550-TS
Comparing between the two RAM sticks. Which one would be better for gaming? Or is there much of a difference there? I do like to multitask, including streaming, iTunes, and typically multiple pages of Chrome up at one time (Internet shopping, forums)
Go for 1866Mhz... more the clock rate, better performance you get...