Hi guys! I'm getting at least a 32" to replace my monitor and was wondering if it was necessary to upgrade my PSU. I have a 480w right now. I have 8GB of RAM, an XFX R7750 Core Edition, and a 500GB HDD.
As mentioned by 13thmonkey you should have no problem running a bigger monitor as it is plugged into the wall, and it has its own power supply separate from that of your PC.