Old computer use option: NAS from Acer X1420G-X5832?

[gryffinwings]

Hi guys, I'm trying to find a use for this old computer, I honestly do not think it's good for anything other than storage much less playing any games, so currently it's sitting in a pretty cramped space right now, and I was thinking about getting a basic Roswell case for $80, unless I find a better cheaper option. The motherboard has an AMD Athlon II X4 645 quad core CPU, 1TB 5400 RPM HDD, 4GB of ram (up-gradable to 8gb), an optical drive, it has 1 PCIe x16 slot and 1 PCIe x1 slot, the onboard ethernet should be a Realtek RTL8211CL – 10/100/1000Mb/s. What do you guys think about this option?

https://www.amazon.com/Rosewill-Rac...4&sr=8-19-spons&keywords=server+itx+case&th=1