I have an hp desktop at my work and two monitors. The motherboard just has one vga slot and no video card but there is an empty pci 16x slot. Also the power supply says max power: 320 watts. Processor is a core 2 duo.
I saw an evga geforce gt 610 for $40 on amazon but it says min power of 300watts so I don't know if that's safe for my setup.
This doesn't need to do any heavy graphics work I just want two independent screens. Price range of $50 or preferably lower. Thanks!