Snapdragon 820 Features Qualcomm's New X12 Modem: Fastest LTE To Date

Subject: Mobile | September 30, 2015 - 02:33 PM |
Tagged: X12 Modem, SoC, snapdragon 820, qualcomm, phones, mu-mimo, mobile, LTE, cell phones

The upcoming Snapdragon 820 is shaping up to be a formidable SoC after the disappointing response to the previous flagship, the Snapdragon 810, which was in far fewer devices than expected for reasons still shrouded in mystery and speculation. One of the biggest aspects of the upcoming 820 is Qualcomm’s new X12 modem, which will provide the most advanced LTE connectivity seen to date when the SoC launches. The X12 features CAT 12 LTE downlink speeds for up to 600 Mbps, and CAT 13 on the uplink for up to 150 Mbps.

LTE connectivity isn’t the only new thing here, as we see from this slide there is also tri-band Wi-Fi supporting 2x2 MU-MIMO.

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“This is the first publicly announced processor for use in mobile devices to support LTE Category 12 in the downlink and Category 13 in the uplink, providing up to 33 percent and 200 percent improvement over its predecessor’s download and upload speeds, respectively.”

The specifications for this new modem are densely packed:

  • Cat 12 (up to 600 Mbps) in the downlink
  • Cat 13 (up to 150 Mbps) in the uplink
  • Up to 4x4 MIMO on one downlink LTE carrier
  • 2x2 MU-MIMO (802.11ac)
  • Multi-gigabit 802.11ad
  • LTE-U and LTE+Wi-Fi Link Aggregation (LWA)
  • Next Gen HD Voice and Video calling over LTE and Wi-Fi
  • Call Continuity across Wi-Fi, LTE, 3G, and 2G
  • RF front end innovations
  • Advanced Closed Loop Antenna Tuner
  • Qualcomm RF360™ front end solution with CA
  • Wi-Fi/LTE antenna sharing

Rumored phones that could end up running the Snapdragon 820 with this X12 modem include the Samsung Galaxy S7 and around 30 other devices, though final word is of course pending on shipping hardware.

Source: Qualcomm

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September 30, 2015 | 03:06 PM - Posted by Anonymous (not verified)

Why was the 810 not popular?

September 30, 2015 | 03:32 PM - Posted by Shambles (not verified)

Being hot and power hungry. Mostly due to it behind held up on an old process node.

September 30, 2015 | 06:22 PM - Posted by troy smith (not verified)

here is a write up about the thermal problem with the 810

September 30, 2015 | 07:40 PM - Posted by Anonymous (not verified)

And yet, they r not spending any time/money on their audio chips (built in DACs). All SD phones sounds like crap when listening to audio through head(ear)phones. people who does audio better makes asshole moves, such as taking out removable batter/ SD card slots or running iOS or just dont sell them in the US.

October 1, 2015 | 02:47 AM - Posted by VeixES (not verified)

CAT12 600Mbps is not quite here yet. Hopefully there would be trials when the SD820 hits the market.

Current LTE-A deployments

October 2, 2015 | 03:58 PM - Posted by Sherif from Qualcomm (not verified)

Actualy 600 Mbps via 3x carrier aggregation and 256-QAM is already live on Telstra in Australia:

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