Editing cavium/thunderx2/cn9978

{{cavium title|ThunderX2 CN9978}}
{{chip
|name=ThunderX2 CN9978
|no image=Yes
|designer=Cavium
|manufacturer=TSMC
|model number=CN9978
|part number=CN9978-2300LG4077-Y21-G
|part number 2=CN9978-2200LG4077-Y21-G
|part number 3=CN9978-2100LG4077-Y21-G
|part number 4=CN9978-2000LG4077-Y21-G
|part number 5=CN9978-1800LG4077-Y21-G
|market=Server
|first announced=May 7, 2018
|first launched=May 7, 2018
|family=ThunderX2
|frequency=1,800 MHz
|frequency 2=2,000 MHz
|frequency 3=2,100 MHz
|frequency 4=2,200 MHz
|isa=ARMv8.1
|isa family=ARM
|microarch=Vulcan
|process=16 nm
|technology=CMOS
|word size=64 bit
|core count=30
|thread count=120
|max cpus=2
|max memory=2 TiB
|package name 1=cavium,fclga_4077
}}
'''ThunderX2 CN9978''' is a {{arch|64}} [[triaconta-core]] high-performance [[ARM]] server microprocessor introduced by [[Cavium]] in mid-[[2018]]. The microprocessor, which is based on the {{cavium|Vulcan|l=arch}} microarchitecture, is fabricated on [[TSMC]]'s [[16 nm process]]. Depending on the exact SKU, the CN9978 operates between 1.8 GHz and 2.3 GHz and supports up to quad/octa-channel DDR4-2666 memory.

== Cache ==
{{main|cavium/microarchitectures/vulcan#Memory_Hierarchy|l1=Vulcan § Cache}}
{{cache size
|l1 cache=1.87 MiB
|l1i cache=960 KiB
|l1i break=30x32 KiB
|l1i desc=8-way set associative
|l1d cache=960 KiB
|l1d break=30x32 KiB
|l1d desc=8-way set associative
|l2 cache=7.5 MiB
|l2 break=30x256 KiB
|l2 desc=8-way set associative
|l3 cache=30 MiB
|l3 break=30x1 MiB
}}

== Memory controller ==
{{memory controller
|type=DDR4-2666
|ecc=Yes
|max mem=2 TiB
|controllers=2
|channels=8
|max bandwidth=158.95 GiB/s
|bandwidth schan=19.87 GiB/s
|bandwidth dchan=39.74 GiB/s
|bandwidth qchan=79.47 GiB/s
|bandwidth hchan=119.21 GiB/s
|bandwidth ochan=158.95 GiB/s
}}
Has subobject "Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.	ThunderX2 CN9978 - Cavium#pcie +
base frequency	1,800 MHz (1.8 GHz, 1,800,000 kHz) +, 2,000 MHz (2 GHz, 2,000,000 kHz) +, 2,100 MHz (2.1 GHz, 2,100,000 kHz) +, 2,200 MHz (2.2 GHz, 2,200,000 kHz) + and 2,300 MHz (2.3 GHz, 2,300,000 kHz) +
core count	30 +
designer	Cavium +
family	ThunderX2 +
first announced	May 7, 2018 +
first launched	May 7, 2018 +
full page name	cavium/thunderx2/cn9978 +
has ecc memory support	true +
instance of	microprocessor +
isa	ARMv8.1 +
isa family	ARM +
l1$ size	1,914.88 KiB (1,960,837.12 B, 1.87 MiB) +
l1d$ description	8-way set associative +
l1d$ size	960 KiB (983,040 B, 0.938 MiB) +
l1i$ description	8-way set associative +
l1i$ size	960 KiB (983,040 B, 0.938 MiB) +
l2$ description	8-way set associative +
l2$ size	7.5 MiB (7,680 KiB, 7,864,320 B, 0.00732 GiB) +
l3$ size	30 MiB (30,720 KiB, 31,457,280 B, 0.0293 GiB) +
ldate	May 7, 2018 +
manufacturer	TSMC +
market segment	Server +
max cpu count	2 +
max memory	2,097,152 MiB (2,147,483,648 KiB, 2,199,023,255,552 B, 2,048 GiB, 2 TiB) +
max memory bandwidth	158.95 GiB/s (162,764.8 MiB/s, 170.671 GB/s, 170,671.263 MB/s, 0.155 TiB/s, 0.171 TB/s) +
max memory channels	8 +
max sata ports	2 +
max usb ports	2 +
microarchitecture	Vulcan +
model number	CN9978 +
name	ThunderX2 CN9978 +
package	FCLGA-4077 +
part number	CN9978-2300LG4077-Y21-G +, CN9978-2200LG4077-Y21-G +, CN9978-2100LG4077-Y21-G +, CN9978-2000LG4077-Y21-G + and CN9978-1800LG4077-Y21-G +
process	16 nm (0.016 μm, 1.6e-5 mm) +
smp max ways	2 +
supported memory type	DDR4-2666 +
technology	CMOS +
thread count	120 +
word size	64 bit (8 octets, 16 nibbles) +