Editing qualcomm/snapdragon 800/8cx

{{qualcomm title|Snapdragon 8cx}}
{{chip
|future=Yes
|name=Snapdragon 8cx
|image=sd 8cx (front).png
|back image=sd 8cx (back).png
|designer=Qualcomm
|designer 2=ARM Holdings
|manufacturer=TSMC
|model number=8cx
|market=Mobile
|first announced=December 6, 2018
|first launched=Q3, 2019
|family=Snapdragon 800
|series=800
|frequency=1,800 MHz
|frequency 2=2,840 MHz
|isa=ARMv8
|isa family=ARM
|microarch=Cortex-A76
|microarch 2=Cortex-A55
|core name=Kryo 495 Gold
|core name 2=Kryo 495 Silver
|process=7 nm
|technology=CMOS
|word size=64 bit
|core count=8
|thread count=8
|max cpus=1
|tdp=7 W
|predecessor=Snapdragon 850
|predecessor link=qualcomm/snapdragon 800/850
}}
'''Snapdragon 8cx''' ('''Snapdragon 8 Compute eXtreme''') is a high-performance {{arch|64}} [[ARM]] [[LTE]] [[system on a chip]] designed by [[Qualcomm]] and introduced in late [[2018]]. Fabricated on TSMC's [[7nm process]], the 8cx features four [[Kryo 495 Silver]] high-efficiency cores operating at 1.8 GHz along with four high-performance [[Kryo 495 Gold]] operating at 2.84 GHz. The Snapdragon 8cx integrates the {{qualcomm|Adreno 680}} [[GPU]] operation at ? MHz and features an X24 LTE modem supporting Cat 20 uplink and Cat 20 downlink. This chip supports up to ? GiB of octa-channel LPDDR4X-4266 memory.

== Overview ==
[[File:snapdragon-8cx-block-diagram.jpg|thumb|left|Block Diagram|200px]]
[[File:snapdragon-8cx-compute-platform-chip-on-wafer.jpg|thumb|right]]
[[File:snapdragon-8cx-compute-platform-chip-back.jpg|thumb|right]]
[[File:snapdragon-8cx-compute-platform-chip-front.jpg|thumb|right]]
The Snapdragon 8cx was announced by [[Qualcomm]] on December 6, 2018. The chip is what Qualcomm considers a new high tier Snapdragon aimed at always-connected PCs with higher performance and thermal headroom over traditional smartphone devices. The chip comprise of a quad-core cluster of [[Kryo 495 Gold]] ([[Cortex-A76]]) [[big cores]] and a quad-core cluster of [[Kryo 495 Silver]] ([[Cortex-A55]]) [[little cores]].

{{clear|left}}

== Cache ==
{{main|arm_holdings/microarchitectures/cortex-a76#Memory_Hierarchy|arm_holdings/microarchitectures/cortex-a55#Memory_Hierarchy|l1=Cortex-A76 § Cache|l2=Cortex-A55}}
{{cache size
|l3 cache=10 MiB
|l3 break=1x10 MiB
}}

== Memory controller ==
{{memory controller
|type=LPDDR4X-4266
|ecc=No
|max mem=16 GiB
|controllers=1
|channels=8
|width=16 bit
|max bandwidth=63.58 GiB/s
|frequency=2133 MHz
|bandwidth schan=7.95 GiB/s
|bandwidth dchan=15.89 GiB/s
|bandwidth qchan=31.79 GiB/s
|bandwidth ochan=63.58 GiB/s
}}

*SSD: NVME SSD
* UFS: UFS 3.0

== DSP ==
{{#set: dsp|Hexagon 685 DSP}}
This chip features [[Qualcomm]]'s {{qualcomm|Hexagon}} {{qualcomm|Hexagon 685|685}} DSP.

== Graphics ==
{{integrated graphics
| gpu                 = Adreno 680 GPU
| designer            = Qualcomm
| execution units     = 
| max displays        = 2
| max memory          = 
| frequency           = ? MHz
| max frequency       = 

| output crt          = 
| output sdvo         = 
| output dsi          = 
| output edp          = 
| output dp           = 
| output hdmi         = 
| output vga          = 
| output dvi          = 

| directx ver        = 12
| opengl ver         = 
| opengl es ver      = 3.2
| opencl ver         = 2.0
| vulkan ver         = 1.1
| hdmi ver           = 
| dp ver             = 
| edp ver            = 
| max res hdmi       = 
| max res hdmi freq  = 
| max res dp         = 
| max res dp freq    = 
| max res edp        = 
| max res edp freq   = 
| max res vga        = 
| max res vga freq   = 
}}

* Codec Support: H.265 (HEVC), H.264 (AVC), VP9
* Playback: Up 4K HDR decode at 120fps
* Capture:
** 4K Video Capture for Ultra HD Premium Displays (4K@30fps)
** Slow Motion video capture (720p@480fps)

== Camera ==
* ISP
** Dual 14-bit ISPs
** Qualcomm Spectra 390 image signal processor
** Up to 16 MP dual camera
** Up to 32 MP single camera

== Connectivity ==
* X24 LTE modem
** LTE Category 20
** Downlink:
*** 2 Gbps peak
*** 7x20 MHz carrier aggregation
*** Up to 256-QAM
*** Up to 4x4 MIMO on five carriers
*** Full-Dimension MIMO (FD-MIMO)
*** Maximum 20 spatial streams
** Uplink: 
*** 316 Mbps peak
*** 3x20 MHz carrier aggregation
*** Up to 2x 106Mbps LTE streams
*** Up to 256-QAM
*** Uplink data compression
* LTE FDD, LTE TDD including CBRS support, LAA, LTE Broadcast, WCDMA (DB-DC-HSDPA, DC-HSUPA), TD-SCDMA, CDMA 1x, EV-DO, GSM/EDGE

* WiFi
** Standards: 802.11ad, 802.11ac Wave 2, 802.11a/b/g, 802.11n
** Spectral Bands: 2.4 GHz, 5 GHz, 60 GHz
** MIMO Configuration: 2x2 (2-stream)

* Bluetooth
** Bluetooth 5.0

== Location ==
* Systems: GPS, GLONASS, Beidou, Galileo, QZSS, SBAS

== Utilizing devices ==
* [[used by::Galaxy Book S]]

== Documents ==
* [[:File:snapdragon-8cx-compute-platform-product-brief.pdf|Product Brief]]
back image	+
base frequency	1,800 MHz (1.8 GHz, 1,800,000 kHz) +, 2,840 MHz (2.84 GHz, 2,840,000 kHz) + and 3,020 MHz (3.02 GHz, 3,020,000 kHz) +
bus speed	100 MHz (0.1 GHz, 100,000 kHz) +
core count	8 +
core name	Kryo 495 Gold + and Kryo 495 Silver +
core voltage (max)	0.95 V (9.5 dV, 95 cV, 950 mV) +
core voltage (min)	0.5 V (5 dV, 50 cV, 500 mV) +
designer	Qualcomm + and ARM Holdings +
dsp	Hexagon 685 DSP +
family	Snapdragon 800 +
first announced	December 6, 2018 +
first launched	March 2019 +
full page name	qualcomm/snapdragon 800/8cx +
has ecc memory support	false +
has locked clock multiplier	false +
instance of	microprocessor +
integrated gpu	Adreno 680 GPU +
integrated gpu designer	Qualcomm +
isa	ARMv8 +
isa family	ARM +
l3$ size	10 MiB (10,240 KiB, 10,485,760 B, 0.00977 GiB) +
ldate	3000 +
main image	+
manufacturer	TSMC +
market segment	Mobile +
max cpu count	1 +
max memory bandwidth	63.58 GiB/s (65,105.92 MiB/s, 68.269 GB/s, 68,268.505 MB/s, 0.0621 TiB/s, 0.0683 TB/s) +
max memory channels	8 +
microarchitecture	Cortex-A76 + and Cortex-A55 +
model number	8cx +
name	Snapdragon 8cx +
process	7 nm (0.007 μm, 7.0e-6 mm) +
series	800 +
smp max ways	1 +
supported memory type	LPDDR4X-4266 +
tdp	7 W (7,000 mW, 0.00939 hp, 0.007 kW) +
technology	CMOS +
thread count	8 +
used by	Galaxy Book S +
word size	64 bit (8 octets, 16 nibbles) +