Yeah 16 GB is way too much. I ran Diablo 3 & 14 alpha & beta at the same time with 8 GB and browser windows open. Just now, I decided to do a test. I ran Diablo 3, Final Fantasy 7 PC (re-release), Neverwinter, Windows Media Player (playing Jules Chrono Trigger Zeal Cover), and Firefox with 4 tabs at the same time. All three games were running at 1080P and doing this uses 3.42 GB of system memory. So yes, if you're gaming stick with 8 unless 16 GB is free. If you're configuring a PC, you'd be better investing in lower latency memory, or a slightly better video card, or even an SSD.
Edit: Also forgot I was going to link this company based in Nebraska, Xoticpc. They recently started doing desktops as well. You also get NA based customer service if you're not tech savvy. So you don't have deal with outsourced customer service.
Edited, Aug 11th 2013 3:55pm by desmar
WoW Blackhand-US-Date of Retirement: 9/21/2010... /Sigh
Devari - 90 Rogue 85 DK Druid/Mage/Warrior 70+
FFXI - Shiva "Retired.... Or not? One more try, honest."
Desmar - 65 Sam 36 Mnk 18 Thf 12 War
FFXIV - Devari Garamond - Sargatanas 50 Paladin / Culinarian / Weaver / Armorer
Beta - Devaria Ariadne - Ultros - Pugilist