The rumors of the 5K Retina iMac were true. Per 9to5Mac, Apple today announced the first Retina desktop computer with the Retina 5K iMac, complete with a 5,120-by-2,880 pixel resolution that Apple claims is 30 percent more power efficient than the previous model. The new Retina 5K iMac will start at $US2499 for the all-in-one […]