N600 compatible with Xfinity

[nctilly]

Is the Netgear N600 (C3700) compatible with the Xfinity new higher speeds?

[FURRYe38]

That would be no.

Cable Internet speeds up to 340 Mbps‡
—
8 downstream & 4 upstream channels
• CableLabs® DOCSIS® 3.0 Certified to work with U.S. cable Internet providers like XFINITY®
from Comcast, Spectrum®, Cox® & more

Higher ISP Speed 1Gb and beyond required a DOCSIS 3.1 supporting modem. 

https://www.downloads.netgear.com/files/GDC/datasheet/en/C3700.pdf