Graphically this device is virtually identical to the DSi. I've seen absolutely no difference in the clarity or rendering of previous DS titles when played on the 3DS, so if you're expecting any kind of upscaling you'll sadly be left disappointed.
Official 3D titles offer slightly more in the graphics department, boasting relatively impressive rendering, but it really becomes special when you crank up the 3D meter to take full advantage of what this little system is capable of. Much like a 3D movie, some of the titles available on the 3DS will leave you in awe as you reach out in an attempt to grab the screen and suddenly remind yourself that there's nothing there. And if of course the 3D effect isn't for you, you can simply turn it off, which is great for those with sensitive eyesight.
The only thing that holds this device back and has ultimately meant only a 4* rating is the short battery life. If you're pushing this handheld to it's limit with a 3D game, the wireless activated and the sound up, you're going to suck the battery dry in just 3-4 hours. You can of course prolong the battery life by turning off the 3D effect, switching off the wirless and turning down the sound, but that
will of course mean compromising your overall gaming experience.
Nintendo truly have created a pioneering piece of hardware in the 3DS and it's a testament to all the company stands for. I would highly recommend this mobile gaming device to anyone who's looking for casual gaming on the go, but ultimately if you're looking for mind-blowing graphics for hours on end then you're setting the bar way too high with your expectations.