Okay, I am really glad that two opinionated people have met together.
Actually, if you would read my previous post I said, "If you want to spend less than 650 Euro, then I can give you an AMD alternative for the CPU and the motherboard. You will definitely lose a little of performance and you will be stuck on AMD, but it's not that bad, you will still run anything you want just fine" - Me
So, this is probably going to be a long reply because I want to really explain the difference between current Intel and AMD processors.
Intel CPUs:
- Much more powerful single core performance which will not majorly bottleneck even more powerful cards such as the GTX 980.
- Single core performance of an Intel CPU allows for noticeably more FPS in gaming (unless you are already getting 60 FPS with an AMD CPU)
- Intel CPUs have a much better lithography thus they consume MUCH less power and generate MUCH less heat than the AMD counterparts.
- Intel CPUs are a premium pay, you pay for reliability, stability (an Intel CPU can work without a hitch up to 80-85 degrees Celcius which is a very high temperature), they are easier to cool, and are power efficient, and powerful.
- Overclocking Intel CPUs is easy and they are very stable at high overclocks even on air.
AMD CPUs:
- Cheap as f*ck, very good choice for people that know what they are doing and know they will not upgrade in the near future
- Very good choice for video editors and enthusiasts on a budget (aka people that don't want to buy i5-4460 or any of the Xeons)
- AMD CPUs generate (generally) more heat and consume (generally) more power. The big downsde of it is the fact that an AMD CPU's sweet temp spot should be (generally) below 62 degrees celcius compared to the more power efficient and sturdy Intel counterparts with a 80-85 degree ceiling.
- AMD CPUs can be very useful in streaming and very heavy multitasking (although streaming LoL will be better on an Intel i5 because Lol only uses one core)
- In hardcore overclocking of FX 6 and 8-core CPUs, 4.4+ Ghz you will generate so much heat that air cooling will probably not be able to handle it so you gotta go liquid.
Regarding FPS in games, here's the difference between let's say an i5-4690K and an FX-8350:
https://www.youtube.com/watch?v=YZN64tKL1e8
As you can see sometimes (in heavily multi threaded games that can take advantage of the FX's 8 cores, the FPS in either similar or the i5 wins by only about 5 FPS, but in some games, the i5 give you MUCH more FPS. In the video they used the GTX 980 to emphasize the difference in power between the two.
Check these videos out:
https://www.youtube.com/watch?v=sJfqVU3iczc
https://www.youtube.com/watch?v=ZGnrdFXZ6ZQ
In one video, a guy has an i5 and GTX 960 and another guy has FX 6300 and R9 390 and they get approximately the same FPS when playing Star Wars Battlefront. The fact that the GTX 960 is considerably weaker than the R9 390 really shows how the i5 can drag a good GPU up, and how the FX-6300 (due to its poor single cor performance inherent in most AMD CPUs) drags the GPU down aka bottlenecks it.
Now, second question: "- Is 600 watt a big enough PSU?" yes it is enough whether it is FX-6300 + R9 390 or the i5 + GTX 960 you are choosing, but it is important to see what quality PSU it is. People here at Tom's put a PSU tier list listing the best and the worst PSUs according to certain tiers:
http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html
According to the Tier List, EVGA Supernova GS Series and G2 Series rank in Tier 1 (THE BEST) AND they are of similar price to the power supply you chose which I didn't find because there was no model number or links in pcpartpicker or anywhere else so I would just get the Supernova PSU. In addition, it comes with a 10 year warranty which is awesome.
Now I want to say why I would choose the GTX 960 over the AMD counterparts:
- Geforce Experience
- Many games suck NVIDIA's dick
- Very well optimized drivers
- Power efficiency
- NVIDIA cards produce less heat and are thus quieter
- I know 5+ friends with NVIDIA cards and they never had any problems with them
Now to AMD GPUs:
- I had problems with AMD drivers on older models of AMD GPUs
- One of my friends has an R7 260x which causes him black screens, screen tearing and all kinds of crap which doesn't happen on his onboard graphics
- My other friend has an R9 280 which is honestly a piece of crap because the computer it's installed in (FX-6300, 16GB RAM, Stupidly expensive motherboard, CX 600W which I know is a pretty bad PSU) doesn't work well at all, and it was proved to be the GPU.
- I have a bunch of people with R9 290(x) and 390(x) having problems so yeah
- AMD cards are a hell producing tons of heat and consuming a tons of electricity
- Overclocking AMD cards is suicide if your card doesn't have a nitrogen cooler from the 2100s (exaggeration intended)
Now about your build, I already talk you about the PSU, Supernova would be better for a similar amount of money; I already told you about the CPU and GPUdifferences.
1) Now first of all, I would never take a Barracuda, they fail frequently and are not as reliable as WD Caviar Blue Drives.
2) RAM is fine, it really doesn't matter much in gaming.
3) The case is crap. The quality control of the company is probably below ground zero. Corsair 200R I suggested to your brother although does look like a boring black box is an awesome, nice, sleek case with very good air flow.
If you really want a pretty case, I posted some links above. I, personally like this case a lot, idk why:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811853002&cm_re=deepcool_sw-_-11-853-002-_-Product
Yep, I think that sums it up. My reply is pretty big so I hope you didn't die of my nerdiness while reading it