Pink Apocalypse said:
But it's absolutely impenetrable. When I have had money to buy something beyond the little laptop I'm currently typing on, getting a straight answer (at Best Buy or wherever) is next to impossible, and I always have the feeling that they're trying to radically up-sell me something beyond my price range. When I've tried to get help online, I got the 'just build it yourself' answer, as if I could just wave some magic wand and do that (see examples in this thread). Attempting to research it led down bottomless pits on incomprehensible specifications, figures, and language I could not understand, which also seemed to change month to month.
Really, it's basically a question of "you get what you pay for", keeping in mind diminishing benefits very clearly apply. The process of deciding how to build a computer for gaming is actually very simple. "How much do you want to spend on a computer?" should be the main question. You then find the components that fit your budget, and read some online reviews to compare them and decide exactly which one you'll buy. I personally like to read my reviews on www.hardocp.com , but other good review sites exist. Hint: If a part gets a "editor's choice" or "gold medal" award on a large review site and it fits your budget, it's probably going to be a good purchase. Don't sweat over the extensive specs analysis if you can't understand them: just look at the performance graphs and the review conclusions, and that should be enough if you're not a PC enthusiast.
So, without further ado, let's go through the whole process quickly, building an entire computer, monitor included:
Two main components: Processor and Video card. Should be about 40% of your budget, more if you want to invest on a more powerful video card.
1) Processor: Essential to gameplay calculations such as AI, physics, etc. A good processor will not only help you with games, but also make everyday computing faster. You have two brands to choose, Intel or AMD. Lately, intel has been pretty much indisputably a better option for gaming. You should still look for processors on both sides that fit your budget, read a couple reviews on each, and decide either way.
2) Video Card: Renders all the visual goodies. If you want to play the most current, graphically-intensive games, you need a strong one. Again, two brands to choose, NVidia or AMD. Neither is clearly superior right now, so, again, you should find one from each side that fits your budget and read reviews to choose. Don't be fooled by crazy specs numbers, clock speeds or memory amount; those things alone don't make good cards. Look at in-game performance analysis (eg. frame rate comparisons) in reviews and get whichever yields the best results for the type of game you want to play most.
The secondary parts: RAM Memory, Motherboard, Hard Disk Drives. Another 40% of your budget, but really depends on how many hard drives you are buying, how large they'll be, etc.
3) RAM Memory: RAM is the lane where all your computing traffic moves. Have too little, and things get bogged down quickly. It's also the easiest part to upgrade, so you don't have to buy enough to last three generations; just buy what you need now, and expand it later if you need. This is a case of "the more, the merrier", but then again if you have too much of it it won't really help. Get at least 8GB, and the higher frequency you can get, the better, but again, stay within your budget.
5) Motherboard: This piece brings all the other parts together, and includes a few parts of its own (especially the integrated sound card and network card). Find one that's designed for your chosen processor (look at the "socket" type) and your budget. Make sure you get one with enough room for your desired video card (some more advanced cards can be huge), and if you want to overclock your computer, one that unlocks the needed multipliers. Really, just find one that is approppriate to the socket and is well-reviewed.
6) Power Supply Unit: You need a PSU that can provide enough juice for your computer and that's reliable. Modular cabling is a plus. Most combinations of mid-high performance video cards and processors can run on a 550w PSU without much trouble.
7) Hard Disk Drive: Stores all your documents, data and games. They can be disk-based or solid-state (SSD), the first ones being less expensive and the latter faster. It's a good idea to have a smaller SSD to store your operational system and most used programs so your computer boots really fast, and another large "standard" HD to store your media files, documents, data, and games. Only if you're *REALLY* impatient with game loading times you'd need to install a game to an SSD.
And the peripheral parts: Computer case, monitor, mouse/keyboard/gamepad. The remaining 20% of your budget, or more if you want to invest on larger monitor or fancier computer case.
8) Computer Case: These can go from the fanciest of fanciest to simple, no-frills design. You decide on how much you want ot invest on case aesthetics, but it should at least be roomy and have at least three or four well-placed cooler fan spots.
9) Monitor: It's obvious what this does. Get one as big as you'd like it to be, make sure it has a low latency (ie. 2ms is usually good). Make sure to read reviews to see if your chosen one can really show good colors and stand the test of time, since this is a part you probably won't be upgrading for a while.
10) Mouse, Keyboard, DVD Drive, Speakers, Gamepad: It's a mouse and keyboard combo. Stick to the basics at first, and upgrade to a mouse with more buttons or whatnot if you feel the need to. Get a wireless combo if you plan on connecting the PC to the living room TV and play from there. Get whatever DVD Drive you can get. Get a good set of speakers with a subwoofer. As for gamepads, if you feel you need one, again, try out and see which one you like. The Xbox controller has become somewhat standard for PC gaming, and I find it comfortable and sturdy as hell.
So, based on that, here's a quick computer build, aimed at a budget of around 1400 dollars, which gives us a reasonably high performance computer, which should be good enough to run all current games on at least high settings for the next three to four years at least (considering that the next-gen console games don't seem to be terribly more advanced that current PC games, I'd wager this machine will be able to run very well all upcoming games for the next gen, which should amount for six years or more). It's a mix of high-performance mainstream parts and entry-level enthusiast parts. The prices were taken from quick searches on newegg.com and amazon.com, and it's very likely you could build a similar machine at lower prices, if you look for good discounts.
Entry-level High Performance build, as of May 2013
1) Processor: Intel core i5 3570 - $225
2) Video Card: geforce 660 - $230
3) RAM Memory: Corsair Dominator 8GB (2x4GB) DDR3 1600 MHz $80
5) Motherboard: MSI Z77A-GD65 $160
6) Power Supply Unit: OCZ ZT Series 550W $190
7a) Hard Disk Drive: Seagate Barracuda 7200 1.5 TB 7200RPM $100
7b) Hard Disk Drive (SSD): SanDisk Ultra Plus SSD 128 GB $100
8) Computer Case: Antec Three Hundred ATX Mid Tower $65
9) Monitor: Asus VS238H-P 23-Inch $160
10a) Mouse, Keyboard: Logitech Desktop MK120 Mouse and keyboard Combo $15
10b) Speakers: Logitech LS21 2.1 Stereo Speaker System $25
10c) DVD Drive: Asus DRW-24B1ST $20
11) Operating System: Windows 8 $100
TOTAL COST: $1470
These are parts for a high-performance computer, one I'd build for myself if I were to build one now. Alas, I don't really need one now, because my three-year old computer built on a similar budget can still run everything I throw at it with ease.
A brief aside: computer parts usually come in "budget", "mainstream", "performance" and "extreme" price/performance groups. Find out where you stand in that range and you should have an easier time finding parts for yourself. For an example of this thing in practice, look at the intel Core i5 article at wikipedia: ( http://en.wikipedia.org/wiki/Ivy_Bridge_(microarchitecture)#List_of_Ivy_Bridge_processors ) I personally find the best place to be, cost-benefit-wise, is the higher "mainstream" to lower "performance".
I'm partially pulling this out of my ass since I haven't simulating building complete machines for each of these categories, but here's an approximation of costs for a complete PC on each of these levels:
PC Build categories/prices, partially pulled out of my ass, as of May 2013.
Budget: $500 to $700
Mainstream: $700 to $1500
Performance: $1500 to $3000
Extreme: $3000 to $6000+
TL;DR: In PCs, what you pay is what you get, but there are diminishing returns. If you want to play all *current* games on high, you might be able to get away with a $700 PC.If you plan on being future-proof and playing everything on high detail settings for the next generation of consoles, be prepared to spend about 1500 dollars. Throw any more money at it, and you get to play with a couple more bells and whistles, add a second or third monitor, but you won't be adding anything really essential to gameplay.
Keep in mind a PC is not only a games machine but also a means to do stuff in the internet, and work. Also, PC games are generally less expensive from the start, and have been getting great discounts as of late, and there are a lot of great free games on PC. Also, free multiplayer and full backwards compatibility! And customization, and mods, and lots of "exclusive" games (eg. Civilization, Total War, Europa Universalis, ArmA, etc)
I hope this helps some.