I was given £500 to spend on a computer. Out of the £500 I spent 400 on the components and the remaining £100 was spent on a monitor, keyboard and wi-fi adapter (I didn't add these parts to the list because I don't think they're relevant).
The CPU I chose was the FX 6300 Black Edition from AMD, it was not my first choice but after doing a bit of research I found that the FX 6300 had better performance and overclocking ability than the A10 7850K that I was planning to buy. After buying the CPU and assembling the PC I then bought the Cooler Master Hyper 212 Evo to replace the stock cooler and then I overclocked my FX 6300 from the stock 3.5 GHz to 4.3 GHz; the CPU has been stable for months at a core voltage of 1.32 volts and a maximum temperature of 54 degrees Celsius under load.
The motherboard I chose was the GA-78-LMT-USB3 from Gigabyte, I can honestly say I chose this motherboard for the price and nothing else (I was a noob at the time so I didn't look at the important stuff). After getting the motherboard I quickly realised that I made a mistake; the motherboard supports SATA 2 not SATA3, which is quite disappointing and it uses traditional BIOS not UEFI - which made overclocking a pain. The good thing about this motherboard is that it supports up to 32GB of DDR3 RAM and features ATI Radeon HD 3000 series graphics, so I guess it's okay for a budget motherboard.
The RAM I chose was the HyperX Fury 8GB DDR3 from Kingston running at 1866 MHz. This RAM is pretty good and I got it for a good price so I'm happy with it. The only thing I've had a problem with is the frequency; for some reason the RAM has been underclocked from 1866 to 1600 MHz due to a BIOS error, I believe this was caused by the method of CPU overclocking I used when I first learned how to overclock - I somehow caused an error which stops my RAM from exceeding 1600 MHz, if it goes anywhere above 1600 then I get boot errors. Oh well, its no big deal, I'm sure a quick BIOS reset will fix it (but I'm not gonna do that).
I chose a 3.5 inch Seagate Barracuda as my main storage device, I didn't have money to buy an SSD at the time (and I also though SSDs were a waste of money - let me remind you that I was a noob at the time). Nothing else to say about this, it's pretty good.
The GeForce GTX 750Ti is one of the best purchases I have ever made; not only is this card playing games like Metro Last Light, Bioshock Infinite, Warframe and Fallout 4 at medium to high settings, but with it I can play all my games at 1080p. Ever since I got this card I haven't played games at sub-1080p resolutions, its been 1080p all the way. This card is a decent overclocker too, right out of the box I increased the core clock by 135 MHz for a maximum of 1363 MHz and a memory clock of 2900 MHz. Even though its a good purchase, I regret buying the Asus model instead of the EVGA FTW model for an extra £5. The Asus model is cool and all but its just not as powerful as the EVGA FTW model, I can only dream of how much more overclocking I could have done with that FTW model - but alas, that will only ever be a dream...
The last part I will talk about was the case, I chose the Zalman Z3 Plus case and I have to say, its a pretty good case. Its got plenty of room for longer graphics cards and comes with 4 fans - two at the front and two at the top. I managed to salvage a 120mm fan from my old case and stuck it on the back of the case, so now the case has 5 fans. Good case for the price I paid for it, although I wonder what it is better than the Cosair Spec-01 case I wanted - probably not but I'm still happy with it, I'm not gonna spend a lot of money on a case. Another thing I should mention is that this case does not make cable management easy (either that or I just suck at cable management), as you can see in the images, the cables are all over the place; my suggestion is that if you choose this case then go for a modular power supply.