You guys are so helpful, thank you!
When buying second hand is there anything I should look out for? For example, when buying electronics that have been refurbished they are given letter grades based off of their new quality. Is there something like that when buying secondhand PC parts?
Some retailers do the grade thing but it isn't standardised. The British retailer CEX does but it is just a gimmick. When I've brought stuff from CEX Grade A-B just include the entire box it came in Grade C is without the box but both arrive in anti static bags. But that is just CEX.
The older the model number of the component the more it could of been used so the mileage could be high like a car, so just ask the buyer what they used the component for. If they say heavy gaming for 5 years then it's most likely not going to perform to the best of it's capabilities. So ask their sender's use of it and for how long they had it for could be an indication of it's wearability. Also, when you receive the item just do a benchmark test (you can download programs to do it for you at the click of a button) and compare it to one published online for the same make and model and that will tell you whether the item is good or not as soon as you buy it because the stress tests will show its wear and tear. This way it would be hard for the seller to pull the blinders over your eyes.
When buying second hand make sure you are aware of the exact model you want as people like to pass off slightly older things for another especially with GPUs since the casing is exactly the same the only difference is the model number printed on it.
Make sure or request that sender sends the item/s in an anti-static bag/envelope as the weather for example could fry the circuitry inside the component. Though this is rare it is very common and can happen especially when shipping from overseas and it has to get scanned at the airports on import and export, the post office, the delivery driver coupled with the weather like heavy rain or hot sunshine will fukk your shyt up if your not careful if the component has passed through all of that. So if it's in an anti static bag those issues for the most part will be nixed and you won't end up with a component that is dead on arrival.
The processor and the PSU are the most used components inside a PC as in the amount of work it has to do, so If I were in your shoes I'd buy the processor you want (preferably an Intel manufactured overclockable one) and a brand new PSU that hasn't been used so it's fresh. The PSU will power your PC and a good one will ensure that your components.
Try not to buy aftermarket/off brand components that have intricate uses. The only thing I'd buy are the case fans and the cables other than that I'd steer towards well known name brands.
Only buy from reputable sellers with
good reviews written in proper English.
Also, when building a PC make sure you
DO NOT do it on a carpet (or try not to do it on that surface), don't make a lot of movement as that creates friction and static which you don't want, and always touch something metal to discharge any static in your body so that you don't fry your equipment or give yourself an electric shock. There are anti-static wrist straps but I've never used one so I cannot attest whether they work well or not. Just make sure you touch metal every time you begin building the components together for your PC like exiting the room ect or doing something else for a few minutes then returning.
Have a good day.