Update on this - purchased the MSI 960GTX Gaming 4GB card which certainly has improved things. I tried the 4k resolution through my YSP-2200 but no good although its possible that its down to old HDMI cables (standard unknown version and v1.3) Using the 1.3 cable directly from the gfx card to the tv, it was able to handle 4k although not perfectly, it was very clear.
I have ordered 2 new v2.0 cables to see if this helps at all.
RE gaming, its so much smoother now, although at 1080p medium settings there is still a little screen tear but its only about 1000% better than it was with the old card on the lowest res and settings!
RE video - tested a 1080p mp4 and was impressed how smooth again it was with no screen tear or jittering.
Very happy overall with the £135 purchase (new but opened box item) from ebay
I have ordered 2 new v2.0 cables to see if this helps at all.
RE gaming, its so much smoother now, although at 1080p medium settings there is still a little screen tear but its only about 1000% better than it was with the old card on the lowest res and settings!
RE video - tested a 1080p mp4 and was impressed how smooth again it was with no screen tear or jittering.
Very happy overall with the £135 purchase (new but opened box item) from ebay