I built a FX6300/GTX960 build a while ago for a friend who wanted play World of Tank/Warships. He now has a friend that is in need of a PC to play the same games but on a sub $500 budget. I happen to have all these parts ordered and in fact had already built this up with a G4400 and no video card for a basic desktop/HTPC sale.
I swapped out the CPU for the i3 and added the video card and an extra fan.
i3 6100: this is a great CPU for the $$. If you really can't get an i5 in the budget, this is great. Paired with a 950/960 is perfect. A Radeon 380/380x will probably start to bottleneck but not on all games, just the CPU intensive ones. No need to spend extra $$ on a CPU cooler or fancy MOBO or expensive RAM. I really recommend this CPU for most budgets under $700.
MOBO: Works, nothing fancy. Cheap. I was concerned when I had in built up with just the IGPU because it just has HDMI out. I can't really recommend this because of that. It seriously limits who will buy a cheap PC if you figure they probably have an older monitor without HDMI (like me). I had to add my old test GPU (Radeon 4350) to boot up and load windows.
RAM: Made a purchasing error here by jumping on the price without reading the that it as a 1X8GB. It is OK though. I really don't think I will lose much at this price/performance point.
GPU: Was on sale and has $20 rebate making this $130. It's the SCC model and over-clocks like a boss. $130-$140 is the most I think the 950 should cost. After that, you should be looking at a 960 or 380 for under $200. This card is great though for the price. It really makes the 750 ti obsolete unless you are adding it to your old Dell/HP. Stays cool even in this non gaming case.
CASE: I has seen some builds with great cable management using this case so I thought, maybe a super budget case can look good and be functional. I have to say, this was actually the easiest build I have done. If I was using one of the 5.25 bays, it would have been awful though. I routed of of the cable through the 5.25 bay and down the side. The way the 3.25 drives mount made a a wide open hidden space. Just be sure to tuck close to the back panel to keep from restricting the 1 front fan. The quality of this case is just OK. I pricked my finger more than once on metal spurs on the thumbs screws. Only has one 120mm front fan, a 120mm side on and a 92mm rear. I ended up using the side for an exhaust fan just to prevent dust. I would rather it be an intake since the PSU is exhaust and the CPU/PSUGPU are all fighting for the same cool air. However, after running Prime 95 and Furmark at the same time, all my my temps were still very good. It's a good looking case with a front air filter. The front panel is easily removed for cleaning and is not attached to anything. The front fan is clipped in with plastic clip which is convenient for cleaning the front air filter as well.
PUS: I took a chance on this new XT from XFX. It is not made by Seasonic but is designed by them I guess. I bought it because it looks good with the all black wires and flat cables. I am sure it is not a great PSU but I am hoping that is at least as good as the EVGA 430W and better than the CX line. The GTX 950 should not draw too much power so I think this will be just fine.
Overall, this plays World of Warships on highest settings at 60+ (FPS was capped at 60).
Skydiver: http://www.3dmark.com/sd/3894063 Could have been higher but did not go crazy with OC with this case.