This is just a quick list that builders can check through before purchasing parts for a gaming computer build (or any build, for that matter). For more in-depth information, check out the PC Hardware Breakdown, here. Still, one should be able to follow this simple list and end up with a working PC build.
1. The motherboard and CPU must be compatible. For example, one cannot put an AMD processor into an Intel based motherboard. Also be sure to match the socket type of the motherboard and the CPU. Always check what processors are supported on the motherboard specifications tab. Just because a motherboard only supports AMD CPUs that doesn’t mean it will support all AMD CPUs.
2. The form factor of the case, motherboard and power supply must match. The form factor is just a size rating that the computer industry uses to keep things simple. For example, there could be hundreds of brands of motherboards, but they all must fit into certain predefined form factors. The most popular form factor, and the one that every build in my Computer Builds, here, uses, its ATX. The ATX form factor is the most popular and practical for gaming PC’s. Other form factors include; micro, mini, nano and pico.
3. The power supply must be powerful enough to handle your hardware. If you plan on using two or more video cards, then make sure your power supply can handle it. Some power supplies are rated for SLI and/or Crossfire, and it might be a good idea to purchase a rated one if you plan on doing that. There’s probably 10,000 or more words to write on this subject, but a great quick way to find out what you need is to use a power supply calculator, like this one. One thing to note on this subject is that PSU (power supply unit) wattage is not the most important factor when buying a power supply, but the total amperage available on the 12v rails and the rest of the rails.
4. Be sure your case is big enough for your needs. This is more of a personal preference, but the bigger the case, the easier the build. Some video cards are also very big and will not fit in some mid-tower cases. A bigger case is also easier to cool, which is something to keep in mind if you plan on gaming for hours and hours.
5. Not all motherboards are made the same, so make sure the one you choose has enough PCI and PCI-Express slots for your needs. If you’re going to be using two or more graphics cards, then you’ll need more than one PCI-Express slot. Also, be sure there are enough PCI and PCI-E slots for things such as sound cards and wireless network cards.
6. When it comes to computer memory (RAM), always check the number of slots, memory type, number of pins, maximum memory supported and the maximum memory supported per slot on the motherboard specifications tab. Then, of course, buy some corresponding RAM for the motherboard.
One way to save a little money when building a computer is to not buy the current absolute best pc hardware available. For example, there is no need to buy an i7 Intel processor when an i5 CPU will do just fine for your build. The same goes for video cards. There is often hundreds of dollars of difference between brand new tech and tech that is a little older but offers only slightly less performance.
If you need help with assembly check out the guide, here. Or if you would like to see some current build examples (to use or modify), check here, PC Build Ideas.