I was looking to upgrade my Graphics card on my Lenovo H530s to play some newer games. At the moment it's using a NVIDIA Geforce GT 720. I was wondering if there is a chance of upgrading to a GTX 970 and if not what card would be ideal. I also can't find any information on the power supply and there isn't any information on the actual power supply itself, though on the side of the PC is says 100-127 200-240v 6/3A if that means anything to anyone. I would hugely appreciate any advice/suggestions for a graphics card/power supply. I wouldn't like to go over £350 for both, but anything close of slightly over is fine. Thanks a bunch.