Making a old dedicated pc for video editing

Hi guys,

So i had the idea of converting my old poker pc setup to a low budget dedicated video editing setup.

full hd nothing higher.

The comp is 8 years old so i font expect miracles, my plan is to install linux (mint?), get a videocard and video edit full hd videos. Software will be openshot or kdenlive nothing professional.

Setup:

• Motherboard G1.Sniper.B5
• Corsair vs550 only 550watt 80+
• Cpu i7 4771 boxed 3,5ghz @3692 with stock cooler
• 16 gb ddr3@1400mhz hyperx fury
• 256gb ssd samsung evo

Currently no videocard...

Now my question should i consider some dated videocard and which one