HP may have announced its TouchSmart 610 all-in-one just a shade too soon for it to ship with Core 2011 processors, but that doesn't mean the company was above pushing out a refresh just a few months later. Now, this 23-inch beast is on sale with a variety of quad-core Core i5 and Core i7 Sandy Bridge CPUs. To recap, what makes the 610 special is its rigid hinge, which allows the 1080p display to slide down so that it's face-up, and nearly flat at a 60-degree angle -- a more ergonomic position for poking 'round the TouchSmart software while standing. Like pre