EPYC 9555 vs Xeon D-2191

Primary details

Comparing Xeon D-2191 and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Series	Intel Xeon D	no data
Architecture codename	Skylake (server) (2017−2019)	Turin (2024)
Release date	7 February 2018 (6 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	$2,406	$9,826

Detailed specifications

Xeon D-2191 and EPYC 9555 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)	64 (Tetrahexaconta-Core)
Threads	36	128
Base clock speed	1.6 GHz	3.2 GHz
Boost clock speed	3 GHz	4.4 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	16	no data
L1 cache	1.125 MB	80 KB (per core)
L2 cache	18 MB	1 MB (per core)
L3 cache	24.75 MB	256 MB (shared)
Chip lithography	14 nm	4 nm
Die size	no data	8x 70.6 mm2
Number of transistors	no data	66,520 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Xeon D-2191 and EPYC 9555 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)	2
Socket	FCBGA2518	SP5
Power consumption (TDP)	86 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-2191 and EPYC 9555. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	no data
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
QuickAssist	-	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Idle States	+	no data
Thermal Monitoring	+	-
Turbo Boost Max 3.0	-	no data
Precision Boost 2	no data	+

Security technologies

Xeon D-2191 and EPYC 9555 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon D-2191 and EPYC 9555 are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon D-2191 and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR5
Maximum memory size	512 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	76.805 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Xeon D-2191 and EPYC 9555.

PCIe version	3.0	5.0
PCI Express lanes	32	128

Pros & cons summary

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Recency	7 February 2018	10 October 2024
Physical cores	18	64
Threads	36	128
Chip lithography	14 nm	4 nm
Power consumption (TDP)	86 Watt	360 Watt

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