Most first time builders will prefer to construct a gaming PC, but if portability is your primary plan, read on for tips on building a gaming computer. When purchasing a case, some considerations are: - CPU power/capability - RAM type (PCIe or Intel) and graphics card - Video card - Power supply arrangement - USB devices - Other peripheral electronics The most crucial component besides the case, however, is a quality motherboard. The motherboard is the hub of all computer components and can be why your whole system doesn't boot up or doesn't function correctly. You might even have heard of "blending" technologies motherboards that have both a standard ATX form factor and a unique overclocked form factor. This is especially desirable if you're building a gaming PC for hardcore gamers.
There are three necessary forms of ATX form factors: Extended-ATX, Cross-Liquid-ATX, and Mini-ATX. Extended-ATX is the least expensive, so many builders stick with this option. Cross-Liquid-ATX is similar to EATX in that it offers excellent expansion possibilities. However, it also has the tendency to overheat; and Mini-ATX has less portability than the other two forms of ATX. If you're considering overclocking your existing CPU, look into a motherboard that supports this. This will make a significant difference in your processor's speed as well as increasing its temperature envelope. Overclocking a CPU can potentially cause irreversible damage to your RAM.
However, it is generally a better option to buy a motherboard made explicitly for overclocking, as most motherboards will have additional slots for PCI express cards and other such devices. As a final note, I highly recommend that you practice running a couple of games using a stock configuration before attempting to overclock your PC, as running a benchmark test first will allow you to clock your processor without any complications.