Which your copy of XP had Vista’s ReadyBoost benefits? Now you can with this new application from eBoostr. With eBoostr, you can use an additional drive (like a USB key or another hard drive) to add another layer of performance-boosting cache for your Windows XP install which lets you PC boot up much faster. The app smartly caches frequently used applications and files for maximum performance speed up and this cache file can be up to 4 GB in size. eBoostr is $29 to purchase and can be used on up to 4 PCs, but you can give it a dry run for free.