I've recently bought a HP Pro 3130 mt Intel Core i5 650 3.2GHz PC - 4GB RAM / 500GB HDD, im gonna add a sound blaster internal sound card and will put a graphics card when my friend will generously give it to me he said it was a GTX 900 series can remember which one precisely or a gt 710 1gb so i wanted to know to be safe if i should change PSU from the current 300w to another?