The Archive.org LastXP builds offer a tangible speed increase, particularly on hardware with less than 512MB of RAM.
You cannot find LastXP on Microsoft’s servers, nor can you buy it on Amazon. The project exists in a legal limbo. Because LastXP is a modified derivative of Windows XP—a proprietary, closed-source operating system—distributing it is technically software piracy. Consequently, mainstream torrent sites and file hosts routinely delete these ISOs. lastxp archive.org