From high ping. (+100 ms) To slower download speeds. (8+/- Mbit/s of the advertised 30 Mbit/s) To slower upload speeds. (2-3+/- Mbit/s of the advertised 5 Mbit/s) (Oceanic Time Warner Road Runner)
I used to really like Chrome, but after noticing the speed discrepancies I've ceased using it.
I'm not sure if it's due to Google Chrome's FreeBSD implementation vs Windows, but I get similar speeds using Google Chrome, and Chromium, on other Unix-like systems as well. (Not a Windows user, so I've not tested Chrome/Chromium on Windows.)