Logitech G9 Vs. Hyper X Pulsefire Dart Wireless
The G9 by Logitech uses a Laser sensor from Avago, specifically the ADNS-6090, providing a DPI/CPI range of 200 to 3200dpi.. It uses a USB connection with a 2m, braided cable. It weighs in at 156 g grams with the cable, has 4 x 7g and 4 x 4g weights and is approximately 109.8 x 80.2 x 38.9 mm (LxWxH).
Pulsefire Dart Wireless
The Pulsefire Dart Wireless by Hyper X uses an Optical sensor from Pixart, specifically the PMW3389, providing a DPI/CPI range of Up to 16000 DPI. This results in a tracking speed of 450ips, and a maximum acceleration of 50G. It uses a wireless / wired connection with a 1.8m, Detachable charging/data cable. It weighs in at 150g grams with the cable and 110g without the cable and is approximately 124.8 x 73.9 x 43.6 mm (LxWxH).