Logitech G502 Lightspeed Vs. Logitech G900 Chaos Spectrum
The G502 Lightspeed by Logitech uses an Optical sensor, specifically the Hero, providing a DPI/CPI range of 100 - 16,000 DPI. This is combined with a 32-bit ARM Microprocessor. This results in a tracking speed of 400 IPS, and a maximum acceleration of 40 G. It uses a Wireless, USB connection. It weighs in at 114 g without the cable, has up to 16 g weights and is approximately 132 x 75 x 40 mm (LxWxH).
G900 Chaos Spectrum
The G900 Chaos Spectrum by Logitech uses an Optical sensor from PixArt, the PMW3366, 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 300 ips, and a maximum acceleration of 40G. It uses a Wired/Wireless, 2.4GHz connection with a 1.83m cable. The G900 Chaos Spectrum is considered to be an ambidextrous mouse. It weighs in at 107g without the cable and is approximately 130 x 67 x 40 mm (LxWxH).