The above are all reletivly good, but a bit old now. So you have a few options start with cheap to full replacement - Cheap - Are you sure you dont have the "Asrock Z170 Pro4 S" does, as X58 you mentioned dosent support the Intel i5-6600 you mentioned above.Upgrade the ram with another 2x 4gb sticks taking the total ram to 16GBIt will be a GTX960 as the 860 dosent exist.This is a good little SSD, but like all SSD'd you cant run the thing more than 80% full. Whats the size of drive? Also I strongly suggest you do what I and other people do and only use the SSD for windows and programes, and put games and data on a seperate mechanical drive.Win 10 - I think most people know my thoughts on that OS.Better - Upgrade the CPU for a core i7 6700k or 7700k - but I need to know the exact mode of your motherboard - €300-400Replace the GTX960 with a GTX 1060 (6GB version) €300 or 1070Ti €400 (these seem to be cheaper than vanilla 1070's atm...) - but we need to know the spec of your PSU to see if it can cope with the higher end CPU and GPU upgrade.Replace the 850 evo which is SATA with a 970 evo m.2 NVME - the Asrock Z170 Pro4S has an m.2 slot - 256GB version - €100Full replacement - If we go down this route you will have to replace the mobo/CPU which will eat up €800 of your €1000, only leaving €200 for a new GPU and PSU.Misc - What is the size of your 850 evo SSD?Whats the size of your other mechanical drives?Whats the make model of your PSU?Whats the make model of your Case? Never, ever... max out the space on an SSD, as this will - remove free space the SSD need for garbage and trim.will shorten the life of your SSD.And if the drive is full windows will run very very slowly or crash.