Florida based Devil Mountain Systems got the chance to test new beta version of Windows XP Service Pack 3. As report says new SP3 will boost the general performance of system for 10 percent. Obviously this will be must have update. This is another blow to Vista development of it’s SP1 which won’t offer much in the way of noticeable fixes, and certainly won’t speed things up. If you’ve been disappointed with the performance of Windows Vista don’t expect much from SP1.