As far as buying an off-shelf PC for gaming for $700, your options are kind of limited. You could go on Craigslist and look for someone selling their gaming PC and buy it that way (already built). I've seen some screaming deals (a $1200 PC selling for $650, no joke). If you aren't comfortable buying used PC hardware, then like I said, your options are limited. Most new PC's come with either iGPU's (built into the CPU) or on-board graphics, or low-end graphics cards which aren't good for gaming. That's why most everyone builds their PC's because it's a better deal for the components because you're buying them close to wholesale prices sometimes when OEM builders pass on markups to you for inferior components. You can build a decent PC...