I'll need some questions answered before anyone can come to a solid conclusion as to what parts you'll need etc.
- What sort of gaming?
- Type of game
- Settings of game (low/med/ultra makes a lot of difference in needs)
- 1080p/1440p/4k? What type of FPS are you looking to get? 30?60?144?
- I know you said you'd want an i7, but justify why you want this. Is it because "i7 is better" or another reason? For example, an i5 of the 8th generation (latest) is faster (yes, really faster) than an i7 of the 7th generation.
Pcpartpicker is great for the USA (I presume, I don't live there lol

), the easiest is if you have a friend or computer shop you know that can build a pc.
Some things you can start setting in your shopping cart now:
- 400W gold+ certified power supply. Don't get more (unless you want 4k@60fps, then it's going to be a bit more complicated, especially with that low a budget) as you won't need more than like 200W with any system these days. Be quiet or bitfenix are solid brands.
- Any 120gb/240gb (or more) SSD. Find out if you need the data storage, if you don't, don't bother with the next one, if you do, the next option applies:
- Any 2tb drive. 1tb drives are priced weird and they are not viable. Pick a known brand, like Seagate.
- Pick a case format (big, medium, small) of ATX, mITX or uATX. Probably wanna stick with an ATX case as they are the best for cooling. Pick one that looks good, but isn't the cheapest option as they come without casefans. A casefan or 2 can really help with the airflow and lifespan of the parts in your pc. The caseformat also applies to your Motherboard when you have chosen all the other parts, so this is a crucial step in both.
- Take 2 sticks of DDR4 2666mhz 4gb or 8gb, so you'll have 8 or 16 gb. 8 being the bare minimum, 16 being good enough to last you for a couple years. Don't pick slower, don't pick faster ram. Really.
-
That's it for now, all that's left is these parts:
- Mobo
- CPU
- CPU heatsink
- GPU
All of which depend on some of the choices you've yet to make, and on your budget. Usually the GPU is picked last as it'll make the most difference in gaming and your budget usually depends on the gpu.