hp z440

Got me one of those HP Z440 refurb workstations. It came with a Quaddro K2000 and handles basic 1080p gaming OK but I was thinking of upgrading to something with 4 or 6 GB of VRAM. Has anyone got some experience with this particular tower who could shed some light? If I absolutely have to, I'll...

i got my hands on a new HP Z440 but obviously more designed for business/cad but i will be using for general and gaming Intel Xeon E5 1630 v3 3.7ghz 16gb ram 512ssd 700 watt psu I will be adding 3 extra drives and the GPU. I have enough sata/power cables to supply drives in each slot but has...