This Razer mouse we are testing out today ends up being nearly the same as the DeathAdder that was reviewed three years ago, but rather than boasting a maximum 3500 DPI sensor, this model maxes out at just 1800 DPI for its 3G infrared sensor.
At first the Deathadder had a 1800 DPI sensor. At the end of 2009 Razer released a Deathadder with an updated sensor with 3500 DPI. The old Deathadder with 1800 DPI isn't manufactured any more. You tested one of the old Deatheadders wich are left.