Difference between revisions of "apm/x-gene/apm883208-x2"

	Edit Values
	APM883208-X2
	General Info
Designer	AppliedMicro
Manufacturer	TSMC
Model Number	APM883208-X2
Market	Server
Introduction	September, 2014 (announced); March, 2015 (launched)
	General Specs
Family	X-Gene
Series	X-Gene 2
Turbo Frequency	2,400 MHz
	Microarchitecture
ISA	ARMv8 (ARM)
Microarchitecture	Shadowcat
Process	28 nm
Technology	CMOS
Word Size	64 bit
Cores	8
Threads	8
Max Memory	256 GiB
	Electrical
Vcore	0.9 V
VI/O	1.8 V, 2.5 V, 3.3 V
TDP	35 W
Tjunction	0 °C – 90 °C
	Succession
	APM883208-X1

Latest revision as of 00:37, 26 September 2018

APM883208-X2 is a 64-bit octa-core ARM server microprocessor designed by AppliedMicro and introduced in 2014. Fabricated on TSMC 28 nm process based on the Shadowcat microarchitecture, this processor has eight custom ARMv8 cores operating at up to 2.4 GHz and supporting up to 256 GiB of dual-channel DDR3-1866 memory.

Cache[edit]

Main article: Shadowcat § Cache

[Edit/Modify Cache Info]

Cache Organization

Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory.

The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC.

Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies.

Note: All units are in kibibytes and mebibytes.

L1$

512 KiB

524,288 B
0.5 MiB

L1I$	256 KiB 262,144 B 0.25 MiB	8x32 KiB	8-way set associative
L1D$	256 KiB 262,144 B 0.25 MiB	8x32 KiB	8-way set associative	Write-through with write-combine

L2$

1 MiB

1,024 KiB
1,048,576 B
9.765625e-4 GiB

		4x256 KiB

L3$

8 MiB

8,192 KiB
8,388,608 B
0.00781 GiB

		1x8 MiB

Memory controller[edit]

[Edit/Modify Memory Info]

Integrated Memory Controller

Max Type	DDR3-1866
Supports ECC	Yes
Max Mem	256 GiB
Controllers	1
Channels	2
Max Bandwidth	27.82 GiB/s 28,487.68 MiB/s 29.871 GB/s 29,871.498 MB/s 0.0272 TiB/s 0.0299 TB/s
Bandwidth	Single 13.91 GiB/s Double 27.82 GiB/s

Expansions[edit]

[Edit/Modify Expansions Info]

Expansion Options

PCIe	Revision: 3.0
	Max Lanes: 17
	Configuration: 1x16+x1, 2x8+x1

USB	Revision: 2.0
	Max Ports: 2

SATA	Revision: 3.0
	Max Ports: 6

2x I2C
4x UARTs
GPIOs
2x SPI
2x SDIO 3.0
JTAG / Trace

Network[edit]

[Edit/Modify Network Info]

Networking

MII

RGMII	Yes (Ports: 4)
SGMII	Yes (Ports: 1)

Note: some ports are muxed

Block diagram[edit]

Documents[edit]

@@ Line 11: / Line 11: @@
 |family=X-Gene
 |series=X-Gene 2
+|turbo frequency=2,400 MHz
 |isa=ARMv8
 |isa family=ARM
@@ Line 27: / Line 28: @@
 |tjunc min=0 °C
 |tjunc max=90 °C
+|predecessor=APM883208-X1
+|predecessor link=apm/x-gene/apm883208-x1
 }}
 '''APM883208-X2''' is a {{arch|64}} [[octa-core]] [[ARM]] server microprocessor designed by [[AppliedMicro]] and introduced in [[2014]]. Fabricated on [[TSMC]] [[28 nm process]] based on the {{apm|Shadowcat|l=arch}} microarchitecture, this processor has eight custom [[ARMv8]] cores operating at up to 2.4 GHz and supporting up to 256 GiB of dual-channel DDR3-1866 memory.
@@ Line 33: / Line 36: @@
 {{main|apm/microarchitectures/shadowcat#Memory_Hierarchy|l1=Shadowcat § Cache}}
 {{cache size
-|l1 cache=256 KiB
+|l1 cache=512 KiB
-|l1i cache=128 KiB
+|l1i cache=256 KiB
-|l1i break=4x32 KiB
+|l1i break=8x32 KiB
 |l1i desc=8-way set associative
-|l1d cache=128 KiB
+|l1d cache=256 KiB
-|l1d break=4x32 KiB
+|l1d break=8x32 KiB
 |l1d desc=8-way set associative
 |l1d policy=Write-through with write-combine
-|l2 cache=512 KiB
+|l2 cache=1 MiB
-|l2 break=2x256 KiB
+|l2 break=4x256 KiB
-|l3 cache=4 MiB
+|l3 cache=8 MiB
-|l3 break=1x4 MiB
+|l3 break=1x8 MiB
 }}
@@ Line 97: / Line 100: @@
 * Note: some ports are muxed
+== Block diagram ==
+:[[File:208-x2 block.png|800px]]
+== Documents ==
+* [[:File:408-x2-product-brief.pdf|Product Brief]]
+* [[:File:408-x2-x-gene-2-evaluation-kit-product-brief.pdf|APM883408-X2 X-Gene 2 X-C2 Evaluation Kit]]

Has subobject "Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.	X-Gene 2 APM883208-X2 - AppliedMicro#pcie +
core count	8 +
core voltage	0.9 V (9 dV, 90 cV, 900 mV) +
designer	AppliedMicro +
family	X-Gene +
first announced	September 2014 +
first launched	March 2015 +
full page name	apm/x-gene/apm883208-x2 +
has ecc memory support	true +
instance of	microprocessor +
io voltage	1.8 V (18 dV, 180 cV, 1,800 mV) +, 2.5 V (25 dV, 250 cV, 2,500 mV) + and 3.3 V (33 dV, 330 cV, 3,300 mV) +
isa	ARMv8 +
isa family	ARM +
l1$ size	512 KiB (524,288 B, 0.5 MiB) +
l1d$ description	8-way set associative +
l1d$ size	256 KiB (262,144 B, 0.25 MiB) +
l1i$ description	8-way set associative +
l1i$ size	256 KiB (262,144 B, 0.25 MiB) +
l2$ size	1 MiB (1,024 KiB, 1,048,576 B, 9.765625e-4 GiB) +
l3$ size	8 MiB (8,192 KiB, 8,388,608 B, 0.00781 GiB) +
ldate	March 2015 +
manufacturer	TSMC +
market segment	Server +
max junction temperature	363.15 K (90 °C, 194 °F, 653.67 °R) +
max memory	262,144 MiB (268,435,456 KiB, 274,877,906,944 B, 256 GiB, 0.25 TiB) +
max memory bandwidth	27.82 GiB/s (28,487.68 MiB/s, 29.871 GB/s, 29,871.498 MB/s, 0.0272 TiB/s, 0.0299 TB/s) +
max memory channels	2 +
max sata ports	6 +
max usb ports	2 +
microarchitecture	Shadowcat +
min junction temperature	273.15 K (0 °C, 32 °F, 491.67 °R) +
model number	APM883208-X2 +
name	APM883208-X2 +
process	28 nm (0.028 μm, 2.8e-5 mm) +
series	X-Gene 2 +
supported memory type	DDR3-1866 +
tdp	35 W (35,000 mW, 0.0469 hp, 0.035 kW) +
technology	CMOS +
thread count	8 +
turbo frequency	2,400 MHz (2.4 GHz, 2,400,000 kHz) +
word size	64 bit (8 octets, 16 nibbles) +

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