Computer for Sale - Good for Gaming

This is a good 2011-2014 era computer that can still be upgraded for gaming. Specs include: Motherboard: ASUS PBQ77-M, CPU: Intel core i7-3770, GPU: processor GPU, Hard drive: Seagate 500gb (SATA), DVD reader: ASUS DVD reader (SATA), RAM: 12GB DDR3 across 4 slots, OS: Windows 10 Pro build 2004, Power supply: Cooler Master 525. The computer does work. I am open to trading it for a working gaming laptop. I do have an extra power cord.