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Xeon D-1521
General Info
Designer	Intel
Manufacturer	Intel
Model Number	D-1521
Part Number	GG8067402568800
S-Spec	SR2DF QJPX (QS)
Market	Server
Introduction	November 1, 2015 (announced) November 1, 2015 (launched)
Release Price	$199.00 (tray)
Shop	Amazon
General Specs
Family	Xeon D
Series	D-1500
Locked	Yes
Frequency	2,400 MHz
Turbo Frequency	2,700 MHz (1 core)
Bus type	DMI 2.0
Clock multiplier	24
Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	Broadwell
Platform	Grangeville
Core Name	Broadwell DE
Core Family	6
Core Model	6
Core Stepping	V2
Process	14 nm
Transistors	3,200,000,000
Technology	CMOS
Die	246.24 mm²
Word Size	64 bit
Cores	4
Threads	8
Max Memory	128 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
TDP	45 W
OP Temperature	0 °C – 108 °C
Packaging
Package	FCBGA-1667 (FCBGA)
Dimension	37.5 mm × 37.5 mm × 3.557 mm
Pitch	0.7 mm
Contacts	1667

Xeon D-1521 is a 64-bit quad-core x86 microserver SoC introduced by Intel in late 2015. The D-1521 is based on the Broadwell microarchitecture and is fabricated on their 14 nm process. It operates at 2.4 GHz with a TDP of 45 W and a turbo frequency of 2.7 GHz. This processor supports up to 128 GiB of dual-channel DDR4-2133 memory.

Cache

Main article: Broadwell § 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$ 256 KiB 262,144 B 0.25 MiB L1I$ 128 KiB 131,072 B 0.125 MiB 4x32 KiB 8-way set associative   L1D$ 128 KiB 131,072 B 0.125 MiB 4x32 KiB 8-way set associative write-back L2$ 1 MiB 1,024 KiB 1,048,576 B 9.765625e-4 GiB     4x256 KiB 8-way set associative write-back L3$ 6 MiB 6,144 KiB 6,291,456 B 0.00586 GiB     4x1.5 MiB 16-way set associative write-back

Graphics

This SoC has no integrated graphics processing unit.

Memory controller

Integrated Memory Controller
Type	DDR3L-1333, DDR3L-1600, DDR4-1600, DDR4-1867, DDR4-2133
Controllers	1
Channels	2
ECC Support	Yes
Max memory	128 GiB

Expansions

[Edit/Modify Expansions Info]

	Expansion Options
	PCIe Revision 2.0 Max Lanes 8 Configs x4, x16 USB Revision 2.0, 3.0 Ports 8 UART Integrated LAN Yes

Networking

Networking
SFI interface	Yes
KR interface	Yes
KR4 interface	No
KX interface	Yes
KX4 interface	No
10Base-T	No
100Base-T	No
1000Base-T	Yes
10GBase-T	Yes

Features

[Edit/Modify Supported Features]

Supported x86 Extensions & Processor Features

MMX MMX Extension SSE Streaming SIMD Extensions SSE2 Streaming SIMD Extensions 2 SSE3 Streaming SIMD Extensions 3 SSSE3 Supplemental SSE3 AVX Advanced Vector Extensions AVX2 Advanced Vector Extensions 2 BMI1 Bit Manipulation Instruction Set 1 BMI2 Bit Manipulation Instruction Set 2 FMA3 3-Operand Fused-Multiply-Add AES AES Encryption Instructions F16C 16-bit Floating Point Conversion NX No-eXecute HT Hyper-Threading TBT 2.0 Turbo Boost Technology 2.0 EIST Enhanced SpeedStep Technology TXT Trusted Execution Technology (SMX) TSX Transactional Synchronization Extensions