Editing Kirin 990

{{hisil title|Kirin 990 5G}}
{{chip
|name=Kirin 990 5G
|no image=Yes
|designer=HiSilicon
|designer 2=ARM Holdings
|manufacturer=TSMC
|model number=990 5G
|market=Mobile
|first announced=September 6, 2019
|first launched=September 6, 2019
|family=Kirin
|frequency=2,860 MHz
|frequency 2=2,360 MHz
|frequency 3=1,950 MHz
|isa=ARMv8
|isa family=ARM
|microarch=Cortex-A76
|microarch 2=Cortex-A55
|core name=Cortex-A76
|core name 2=Cortex-A55
|process=7 nm+ EUV
|transistors=10,300,000,000
|technology=CMOS
|die area=113.31
|die length=10.68
|die width=10.61
|word size=64 bit
|core count=8
|thread count=8
|die size=113.31mm²
}}
'''Kirin 990 5G''' is a {{arch|64}} high-performance mobile [[ARM]] [[5G]] SoC designed by [[HiSilicon]], introduced on September 6th 2019, first appearing in the Huawei Mate 30 Pro 5G. Fabricated on TSMC's enhanced [[7 nm process|7nm+ EUV process]], the 990 5G incorporates two [[big cores|high frequency]] {{armh|Cortex-A76|l=arch}} cores operating at 2.86 GHz along with two [[big cores|medium frequency]] {{armh|Cortex-A76|l=arch}} cores operating at 2.36 GHz along with four {{armh|Cortex-A55|l=arch}} cores operating at up to 1.95 GHz.

The 5G model of the Kirin 990 is one of the first SoC that fully integrates a 5G modem ([[Balong 5000]]) in the same silicon as the CPU and the GPU. The Kirin 990 5G includes a limited version of the Balong 5000 modem that supports Sub-6-GHz frequency but no mmWave (commonly used in the USA).

There will be a [[Kirin 990 4G]] Version, including the Balong 765 with 4G LTE (3GPP Rel. 14) in the SoC.

The Kirin 990 5G supports up to 2.3 Gbps download and up to 1.25 Gbps upload speed and supports LPDDR4X-4266 memory.

== Overview ==
Introduced at the 2019 IFA, the Kirin 990 uses the same ARM cortex ([[cortex-a76|Cortex A76]] + [[cortex-a55|Cortex A55]]) versions as its predecessor, the Kirin 980, but the clock frequencies have been increased thanks to TSMC's more advanced manufacturing method, the 7nm+ EUV node:
The 990 features two high-performance [[big cores|big]] {{armh|Cortex-A76|l=arch}} core operating at 2.86 GHz, 2 medium-performance [[big cores|big]] {{armh|Cortex-A76|l=arch}} operating at 2.36 GHz, and four [[little cores|little]] {{armh|Cortex-A55|l=arch}} cores operating at 1.95 GHz. Compared to the {{\\|980|980}}, the 990 5G features between 10% - 35% power efficiency due to the 2nd generation of 7nm process node. The 990 ballooned to over 50% more transistors from 6.9 billion in the {{\\|980}} to 10.3 billion. The 990 incorporates an in-house developed DaVinci NPU dual-[[neural processor]] designed for [[AI]] acceleration.

== Cache ==
{{main|arm holdings/microarchitectures/cortex-a55#Memory_Hierarchy|arm holdings/microarchitectures/cortex-a76#Memory_Hierarchy|l1=Cortex-A55 § Cache|l2=Cortex-A76 § Cache}}

For the {{armh|Cortex-A76|l=arch}}:

{{cache size
|l1 cache=512 KiB
|l1i cache=256 KiB
|l1i break=4x64 KiB
|l1d cache=256 KiB
|l1d break=4x64 KiB
|l2 cache=2 MiB
|l2 break=4x512 KiB
}}

For the {{armh|Cortex-A55|l=arch}}:

{{cache size
|l1 cache=256 KiB
|l1i cache=128 KiB
|l1i break=4x32 KiB
|l1d cache=128 KiB
|l1d break=4x32 KiB
|l2 cache=512 KiB
|l2 break=4x128 KiB
}}


== Memory controller ==
The Kirin 990 supports 4-channel LPDDR4X up to 4266 MHz. Each channel supports at most two ranks.

{{memory controller
|type=LPDDR4X-4266
|ecc=No
|max mem=8 GiB
|controllers=1
|channels=4
|width=64 bit
|max bandwidth=31.78 GiB/s
|bandwidth dchan=15.89 GiB/s
|bandwidth qchan=31.78 GiB/s
}}

== Graphics ==
{{integrated graphics
| gpu                 = Mali-G76
| designer            = ARM Holdings
| execution units     = 16
| max displays        = 2
| max memory          = 
| frequency           = 600 MHz
| max frequency       = 

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

| directx ver        = 12
| opengl es ver      = 3.2
| openvg ver         = 1.1
| opencl ver         = 2.0
| vulkan ver         = 1.1
}}

== Wireless ==
* 5G NR Modem
** DL: Up to [[User Equipment]] (UE) category 21
*** Downlink of up to 1.4 Gbps (4x4 MIMO + 256QAM 3CC CA = 1.2 Gbps, 2x2 MIMO + 256QAM + 1CC = 200 Mbps)
** UL: Up to [[User Equipment]] (UE) category 18
*** Uplink of up to 200 Mbps (2x2 MIMO, 256-QAM, 1x20MHz CA)
* Wi-Fi 802.11 ac
* Bluetooth 5
* NFC
* GPS / A-GPS / GLONASS / BDS

== Utilizing devices ==
* [[used by::Huawei Mate 30 5G]]
* [[used by::Huawei Mate 30 Pro 5G]]
* [[used by::Huawei Mate 30 RS Porche Design]]
* [[used by::Huawei P40]]
* [[used by::Huawei P40 Pro]]
* [[used by::Huawei P40 Pro+]]
* [[used by::Honor V30 Pro]]
* [[used by::Huawei MatePad Pro 5G (2020)]]
* [[used by::Honor 30 Pro]]
* [[used by::Honor 30 Pro+]]

== Bibliography ==
* Huawei Kirin 990 Keynote, 2019 IFA
base frequency	2,860 MHz (2.86 GHz, 2,860,000 kHz) +, 2,360 MHz (2.36 GHz, 2,360,000 kHz) + and 1,950 MHz (1.95 GHz, 1,950,000 kHz) +
core count	8 +
core name	Cortex-A76 + and Cortex-A55 +
designer	HiSilicon + and ARM Holdings +
die area	113.31 mm² (0.176 in², 1.133 cm², 113,310,000 µm²) +
die length	10.68 mm (1.068 cm, 0.42 in, 10,680 µm) +
die width	10.61 mm (1.061 cm, 0.418 in, 10,610 µm) +
family	Kirin +
first announced	September 6, 2019 +
first launched	September 6, 2019 +
full page name	Kirin 990 +
has ecc memory support	false +
instance of	microprocessor +
integrated gpu	Mali-G76 +
integrated gpu base frequency	600 MHz (0.6 GHz, 600,000 KHz) +
integrated gpu designer	ARM Holdings +
integrated gpu execution units	16 +
isa	ARMv8 +
isa family	ARM +
l1$ size	512 KiB (524,288 B, 0.5 MiB) + and 256 KiB (262,144 B, 0.25 MiB) +
l1d$ size	256 KiB (262,144 B, 0.25 MiB) + and 128 KiB (131,072 B, 0.125 MiB) +
l1i$ size	256 KiB (262,144 B, 0.25 MiB) + and 128 KiB (131,072 B, 0.125 MiB) +
l2$ size	2 MiB (2,048 KiB, 2,097,152 B, 0.00195 GiB) + and 0.5 MiB (512 KiB, 524,288 B, 4.882812e-4 GiB) +
ldate	September 6, 2019 +
manufacturer	TSMC +
market segment	Mobile +
max memory bandwidth	31.78 GiB/s (32,542.72 MiB/s, 34.124 GB/s, 34,123.515 MB/s, 0.031 TiB/s, 0.0341 TB/s) +
max memory channels	4 +
microarchitecture	Cortex-A76 + and Cortex-A55 +
model number	990 5G +
name	Kirin 990 5G +
supported memory type	LPDDR4X-4266 +
technology	CMOS +
thread count	8 +
transistor count	10,300,000,000 +
used by	Huawei P40 +, Huawei Mate 30 5G +, Huawei Mate 30 Pro 5G +, Huawei Mate 30 RS Porche Design +, Huawei P40 Pro +, Huawei P40 Pro+ +, Honor V30 Pro +, Huawei MatePad Pro 5G (2020) +, Honor 30 Pro + and Honor 30 Pro+ +
word size	64 bit (8 octets, 16 nibbles) +