Xeon D-1521 vs D-1587

Primary details

Comparing Xeon D-1587 and Xeon D-1521 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	895	1519
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.11	2.60
Market segment	Server	Server
Series	Intel Xeon D	Intel Xeon D
Power efficiency	12.43	7.52
Architecture codename	Broadwell (2015−2019)	Broadwell (2015−2019)
Release date	24 February 2016 (8 years ago)	1 November 2015 (9 years ago)
Launch price (MSRP)	$1,443	$199

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon D-1521 has 23% better value for money than Xeon D-1587.

Detailed specifications

Xeon D-1587 and Xeon D-1521 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	16 (Hexadeca-Core)	4 (Quad-Core)
Threads	32	8
Base clock speed	1.7 GHz	2.4 GHz
Boost clock speed	2.3 GHz	2.7 GHz
Bus type	DMI 2.0	DMI 2.0
Multiplier	17	24
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	1.5 MB (per core)	1.5 MB (per core)
Chip lithography	14 nm	14 nm
Die size	306.18 mm2	246.24 mm2
Maximum case temperature (TCase)	80 °C	80 °C
Number of transistors	3,200 million	3,200 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon D-1587 and Xeon D-1521 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1 (Uniprocessor)	1 (Uniprocessor)
Socket	FCBGA1667	FCBGA1667
Power consumption (TDP)	65 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-1587 and Xeon D-1521. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	Intel® AVX2
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	+
GPIO	+	+

Security technologies

Xeon D-1587 and Xeon D-1521 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon D-1587 and Xeon D-1521 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon D-1587 and Xeon D-1521. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4, DDR3	DDR4, DDR3
Maximum memory size	128 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	34.124 GB/s	34.124 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon D-1587 and Xeon D-1521.

PCIe version	2.0/3.0	2.0/3.0
PCI Express lanes	24	24
USB revision	2.0/3.0	2.0/3.0
Total number of SATA ports	6	6
Number of USB ports	8	8
Integrated LAN	+	+
UART	+	+

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	8.54	3.58
Recency	24 February 2016	1 November 2015
Physical cores	16	4
Threads	32	8
Power consumption (TDP)	65 Watt	45 Watt

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Should you still have questions on choice between Xeon D-1587 and Xeon D-1521, ask them in Comments section, and we shall answer.

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