It's not to often that you get a chance to review to review a mouse that when you get done using it will leave you with a feeling of amazement. That is until you lay your hands on the Razer Viper. So what makes this rodent so much different that the others? Let's start with Razer's "Karma Precision" optical engine that provides a true hardware based 1000 DPI resolution. Want more then read the review.