Fallout 3 hand-down best game I've ever played. It introduced me to the RPG genre.

Yes it's like mine I have a 3570k with 670 and I get those frames on max settings.

I have budget of 600 and another 50 if it does not include windows 7

But I need good ram possibly 16gb of ram
Good GHz possibly at least in 4. Range nothing above 4.4 as I need to get really good ...

Not sure why you need 16gb of RAM. 8 is above good enough for pretty much everything.

[url=http://www.amazon.com/Cooler-Master-HAF-912-RC-912-KKN1/dp/B003ZM7YTA/ref=sr_1_1?ie=UTF8&qid=1363724449&sr=8-1&keywords=haf+912]Case 1

[url=http://www.amazon.com/Cooler-Master-HAF- ...

You should build one and there isn't a certain "type". Just find out your budget and pick parts from that.

DayZ/Battlefield 3/World of Warcraft

CPU: Intel Core i5 3570k 3.4 GHz Turbo Boost to 3.8 GHz (Recommend overclocking to 4.4 GHz)

Motherboard: ASRock Extreme4 Z77 Socket 1155 Intel Z77 Chipset

CPU Cooler: Cooler Master Hyper 212 EVO ...

DayZ or World of Warcraft for multiplayer and Fallout 3 & NV/Borderlands 2 singleplayer.

Make sure video driver for graphics are up too date.