I recognise I am going to need a new graphics card for my Windows 10 PC to playback and edit footage from the Mavic Pro but dont want to be spending £300 on a gaming card (I have no gaming needs)  and am only looking at a budget of £100 give or take.
PC is a Dual intel Xeon 2.33 GHz with 8 cores and 16 GB memory and plenty of storage. The graphics card currently installed is HD but wont cut it for 4K.

Does anyone have any recommendations?

I have been looking at a XFX Radeon RX 460 2GB GDDR5 but don't know if this is suitable. I will probably also be using Cyberlinks Power Director for editing.

Any advice appreciated.

hi,

u better go up to 4gb or more on a new GPU.
if the progam u use support GPU acceleration, the more GPU memory, the larger the format you'll be able to work with in real-time.

for playback u schould good to go with a RX 460.