Hi, I am upgrading my prebuilt HP desktop PC (https://support.hp.com/us-en/document/c04556499). I'm wishing to change the graphics card to a GTX 1060 or a GTX 1050 ti, as it is letting me down out of all of the parts in the computer. I want to upgrade the PC without having to buy a whole new PC. Is the wattage on the PSU fine? That is my main concern. Sizing of the case is fine because I have done the measurements. And I am also looking to upgrade my RAM as it has an extra RAM slot to 16 GB. If anyone could give me any suggestions as to what RAM I should buy for this, should I chuck out the RAM in there already and get a new set together with better MHz etc. Any help is fine. Thanks, Matthew.