In my side-by-side tests, Zoom 5341J is consistently faster than the Comcast rental (Motorola SB5101, which uses DOCSIS 2.0), both downstream and upstream. The speed difference is marginal not because 5341J is incapable, but because Comcast is throttling my speed to my pay level. (“Performance”, I think, at 20Mbps, although I am able to get over 27Mbps with 5341J.)
My problems with the Logitech Revue have also been solved, and the Zoom 5341J has not been dropping the wired connection to the Linksys WRT54G. That, combined with the performance enhancements, has left me very happy.
The Zoom Model 5341J cable modem meets the cable industry's DOCSIS 3.0 standard for speeds up to 343 Mbps, and also works with lower-speed DOCSIS 2.0 and 1.1 services. And with IPv4 and IPv6 networking support, this is a product designed and built for use today and for years to come. The Model 5341J has been tested and certified by CableLabs® to work with nearly all U.S. cable service providers. Additonal testing and approvals have been obtained from Comcast, Cox, Time Warner Cable, Cable ONE and other cable services. The fast 10/100/1000 Mbps Ethernet port connects to your Windows or Macintosh computer, router, wireless access point, HomePlug adapter, or other Ethernet-enabled device The Model 5341J can also be plugged into routers and routers with wireless capability for sharing of your high-speed service with multiple devices. With its easy installation, high speed, and broad capability, the Model 5341J is the perfect choice for almost any cable modem user.