>>131627If you're running Socket 775, get a motherboard with s775 and a Windows 7 license for ~$30.
You'll get an upgrade path to high-end Core2s*, a genuine Windows 7 license, and a free upgrade to Windows 10. You can re-use then upgrade your Windows XP install: just avoid AHCI, change all the drivers to "Microsoft standard whatever driver", download the appropriate OEMBIOS certificate for your motherboard, and swap it in in the shift-f10 menu of Windows XP's installer.
* a Core2 Quad or Core2 Xeon has comparable performance to a Haswell Pentium or Sandy Bridge i3.