Hi guys, a couple of years ago, I bought this PC model HP ProDesk 400 G1 SFF, running with Windows 7 64-bit (that I'm still using), but I want to upgrade some parts, I'm kinda noob with this stuff so, I don't know where to start, if the parts will be compatible with the hardware that I'm using right now or what to buy.

I'm a pretty average user, I was just using it for some light gaming, I work with MS Office suite, casual browsing, and, I'm not looking for a high-end performance or the best graphics, I'm ok with playing games on medium or even low quality, but I want to be able to play at least games like the new Cyberpunk 2077 or GTA V for example.

Also I'm on a tight budget right now, and I'll be buying the parts that I need one by one (and the fact that I'm not from the US, so, my options are: buy via Amazon import fees/courier or with local providers), but I really would appreciate your help.

My PC:

CPU: Intel Core i5-4570 @ 3.2GHz

Motherboard: Hewlett-Packard 18E9

RAM: I'll be upgrading to 10GB next month (2GBx8GB), right now I have 2GB DDR3 (on this case I think I'm gonna stick with 10GB)

Storage: 500GB Hard Drive (I will continue to use this one)

GPU: 1- AMD Radeon HD 6350 @ 650 MHz ; 512 MB @ 800 MHz 2- Intel(R) HD Graphics 4600 @ 600 MHz

If you need more info or I forgot something, please let me know, and thanks in advance.