Is it a good idea to build a PC gradually instead of all at once?

I wouldn't recommend buying parts one by one for several reasons. Firstly, you might get stuck with a component that's hard to find later or facing a price spike. You'll also encounter challenges with return policies; you're better off returning parts within a short return period than trying to deal with warranties down the line. It's usually best to get everything at once so you can test if they all work together.

It's okay to buy parts gradually, but I suggest you save up until you can purchase the entire setup at once. This way, you can ensure all parts are under warranty at the same time. Also, if you encounter a DOA component, you'll know right away rather than months later. I saw you were wondering about RAM options like DDR4 or DDR5, but that really depends on the CPU you select, so it’s often easier to wait.

You might want to wait until you can buy everything at once. Many parts are likely to get cheaper over time, which could allow you to get a better build for the same budget. Prices for RAM, especially DDR5, are quite high right now, so it's worth considering whether to wait a bit longer.

I'd recommend getting RAM and storage first since prices for those aren't likely to drop anytime soon. GPU prices are also going up, so you might want to prioritize that next. If you're buying slowly, keep an eye on deals for other components like the power supply, case, and cooling fans. Motherboard prices are usually stable, so you can buy that later without fear of major price increases.

It actually worked for me to buy parts over three months during holiday sales. I managed to snag good deals, and my PC is still running strong after 5 years. Just make sure you’re patient with your purchases and keep an eye out for discounts.