Logitech G603 Vs. MadCatz R.A.T. M
The G603 by Logitech uses an Optical sensor, providing a DPI/CPI range of 200 - 12,000 dpi. This is combined with a 32-bit ARM processor. This results in a tracking speed of 400 IPS, and a maximum acceleration of 40G. It uses a "LIGHTSPEED" and Bluetooth connection. It weighs in at 112.3g with 1 AA battery, 135.7g with 2 AA batteries grams and 88.9 g without the cable and is approximately 124 x 68 x 43 mm (LxWxH).
The R.A.T. M by MadCatz uses a Laser sensor, providing a DPI/CPI range of 25 - 6400dpi (in 25dpi steps). This results in a tracking speed of 6 m/sec, and a maximum acceleration of 50G. It uses a USB Nano Dongle & Bluetooth (33ft / 10m range) connection.