Xeon D-1581 vs D-2191

Primary details

Comparing Xeon D-2191 and Xeon D-1581 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	896
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Series	Intel Xeon D	Intel Xeon D
Power efficiency	no data	12.18
Architecture codename	Skylake (server) (2017−2019)	Broadwell (2015−2019)
Release date	7 February 2018 (6 years ago)	24 February 2016 (8 years ago)
Launch price (MSRP)	$2,406	no data

Detailed specifications

Xeon D-2191 and Xeon D-1581 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	18 (Octadeca-Core)	16 (Hexadeca-Core)
Threads	36	32
Base clock speed	1.6 GHz	1.8 GHz
Boost clock speed	3 GHz	2.4 GHz
Bus type	DMI 3.0	DMI 2.0
Bus rate	4 × 8 GT/s	no data
Multiplier	16	18
L1 cache	1.125 MB	1 MB
L2 cache	18 MB	4 MB
L3 cache	24.75 MB	24 MB
Chip lithography	14 nm	14 nm
Die size	no data	306.18 mm2
Maximum case temperature (TCase)	no data	80 °C
Number of transistors	no data	4700 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon D-2191 and Xeon D-1581 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	FCBGA2518	FCBGA1667
Power consumption (TDP)	86 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-2191 and Xeon D-1581. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
QuickAssist	-	no data
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	+
GPIO	no data	+
Turbo Boost Max 3.0	-	no data

Security technologies

Xeon D-2191 and Xeon D-1581 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
MPX	+	-
SGX	-	no data
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon D-2191 and Xeon D-1581 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon D-2191 and Xeon D-1581. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4, DDR3
Maximum memory size	512 GB	128 GB
Max memory channels	4	2
Maximum memory bandwidth	76.805 GB/s	34.124 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon D-2191 and Xeon D-1581.

PCIe version	3.0	2.0/3.0
PCI Express lanes	32	24
USB revision	no data	2.0/3.0
Total number of SATA ports	no data	6
Number of USB ports	no data	8
Integrated LAN	no data	+
UART	no data	+

Pros & cons summary

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Recency	7 February 2018	24 February 2016
Physical cores	18	16
Threads	36	32
Power consumption (TDP)	86 Watt	65 Watt

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Should you still have questions on choice between Xeon D-2191 and Xeon D-1581, ask them in Comments section, and we shall answer.

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