My computer has NVidia GeForce 7350 LE 128MB graphics card and I want better performance. NVidia GeForce 8400 GS 512MB at BestBuy for $60 sounds like what I need. The 8400 requires at least 300W power supply. My computer PSU says, “Continuous total DC output power supply shall not exceed 300W.” It also mentions 3 different output “Rails” each at less than 300W. I don’t have any idea what a rail is.
Do you think the 8400 will work in my computer with the existing power supply?