I built this PC last week as a present for my Dad for Father's Day, a replacement for his 10 year old Dell Optiplex 745 that recently stopped working. Being 15 years old, this was my second build (first one here). I purchased all the parts myself, using money that I had earned over the last few weeks from my part-time job. Everything was purchased from either Centre Com or CPL.
This build had to meet a few requirements: not too large (case size) and to be at a total cost of no more than around $450. And since the only game my Dad plays is Stick Cricket on his phone, I saved a bit of money on the cost of a graphics card.
My Dad is very happy with the build, so hopefully no upgrades will have to be made for at least another year. There is one complaint, however, and that is the storage capacity. I wanted the extra speed of an SSD, and given that he had a 160GB Seagate HDD in his Dell, I thought that a 120GB SSD would be enough. I'll put in a 1TB or 500GB HDD in when I get the cash :)
CPU (Pentium G3258): A cheap, dual-core, unlocked processor from Intel. Very good for my Dad's needs, which involve basic web browsing, creating documents (mainly Word and Excel) and just general use.
Motherboard (Asus H81M-Plus): A good, basic microATX board with onboard USB 3.0 headers. However, I did run into a few problems whilst installing the motherboard into the I/O shield. It was a little flimsy and I had trouble making the ports on the motherboard line up with the I/O shield.
Memory (Crucial 1 x 8GB): Really cheap RAM. Nothing special at all, only reason for 1 x 8GB instead of 2 x 4GB is because the motherboard only has two DIMM slots, and I wanted to leave room for expansion later down the track just in case.
Storage (120GB 750 Evo): Great SSD with great boot times. I got a 750 Evo instead of an 850 Evo as it was about $30 cheaper, but I have no regrets whatsoever, it is still much faster than the WD Caviar Blue in my PC. Would definitely recommend.
Case (Fractal Core 1100): The only reason for the purchase of this case was because it was pretty, but not too flashy. I was contemplating the Corsair SPEC-M2, but I didn't want to make this build look like a gaming PC, because, let's be honest, it isn't. But the one thing I don't like about this case is its flimsiness - the side panels feel very weak and the case overall feels cheaply made.
PSU (Fractal Integra M 450W): A PSU with great reviews. Bought this because it was semi-modular, and frankly, since I knew the case was small, the lower the number of cables the better.
The wireless adapter is a USB, the Belkin N600 that I bought ages ago. The keyboard (Logitech K120) and the mouse (Microsoft Basic Optical Mouse) were recycled after I got a new keyboard and a mouse for my computer, and the speakers (Logitech X-530) are ancient, at least 8 years old.
Please note the setup the computer is connected to in the photos isn't its normal setup, I just moved them to this desk because of better lighting and a larger table.