Background : I have a desktop that I built quite a few years ago (2009 perhaps?) and it's getting along ok but a few games I've tried to play lately I haven't got the grunt for - tolerable, I'll just play something else - however the final straw was Windows 10 deciding that my graphics card was too old so would no longer allow me to have dual screens.

Currently, the MB is a Gigabyte GA-MA790FXT-UD5P with an AMD Phenom II processor, and the graphics are a Radeon HD4870.

There aren't the funds to be thrown at a complete rebuild right now (nor the appetite from the accountant indoors) so I was going to do it incrementally - realising that I'll need to do new MB/CPU/mem all at the same time, or at least buy them all before I can us any of them.

I was thinking though, as an interum measure, of buying a new graphics card and fitting that to the old machine until I do the rest of the upgrade. I'm looking at an Nvidia 1070 series card currently (enough performance but not too much cost that I'll lose my spot in the house)

Question is, will it work? Will a 1070 series card work ok (I expect at a reduced capacity possibly) in such an old motherboard?