The average megapixel of webcams of a similar type and age to the C525 is 3.2MP, and the megapixels range from 0.1MP to 20MP. With a megapixel of 8 megapixels, the Logitech C525 has one of the higher megapixels amongst built-in microphone webcams of this age.
Other 8MP webcams currently available which you might also want to consider include because of it's better review score, the Creative Labs Live! Cam Connect HD[plb_1479217_price].
Webcams with a higher megapixel that might be worth looking at include the A4Tech PK-950H[plb_2499372_price] (16MP).