Motherboard: BIOSTAR H77MU3 (4Ram Slots, PCIE 3.0)
CPU: I5 3570 (3.8GHz Max clock speed)(Motherboard supports i7 3770k and Xeon processors also)
CPU Cooler: ICE EDGE MINI FS V2.0(I have some extra thermal paste, I can provide it to you if you want)
Ram: 16GB Ddr3 Installed in 2 slots and the other 2 slots are empty (Motherboard supports 32GBs of total ram)
PSU: Antec BP350PS PRO EC 350 watt PSU(I have Used Sapphire Nitro+ Rx 580 8GB with it, so it will handle any GPU compatable with the CPU)
Price is negotiable of course, I've used this PC with the utmost care, it was one of my greatest companion in life. So I can assure you that if you buy this, you will never regret.
it's good for a startup PC but it can handle almost anything of modern days too!