Looks like the iPhone 8(8+) and X will still be sporting Intel's old xmm 7360 modem (evident by the cellular not supporting CDMA networks). I'm guessing Apple will do similar as the iPhone 7 and throttle Qualcomm's modem so it doesn't exceed Intel's inferior performance...
(From Apples tech specs site for the iPhone 8)
Models A1905 and A1897 do not support CDMA networks, such as those used by Verizon and Sprint.
(From Apples tech specs site for the iPhone 8)
Models A1905 and A1897 do not support CDMA networks, such as those used by Verizon and Sprint.
- FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 66)
- TD-LTE (Bands 34, 38, 39, 40, 41)
- UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
- GSM/EDGE (850, 900, 1800, 1900 MHz)