EPYC 9845 vs Xeon W-2191B

Primary details

Comparing Xeon W-2191B and EPYC 9845 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	354	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Series	Intel Xeon W	no data
Power efficiency	11.93	no data
Architecture codename	Skylake (server) (2017−2018)	Turin (2024)
Release date	21 December 2017 (7 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	no data	$13,564

Detailed specifications

Xeon W-2191B and EPYC 9845 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)	160
Threads	36	320
Base clock speed	2.3 GHz	2.1 GHz
Boost clock speed	4.3 GHz	3.7 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	23	no data
L1 cache	64K (per core)	80 KB (per core)
L2 cache	1 MB (per core)	1 MB (per core)
L3 cache	24.75 MB (shared)	320 MB (shared)
Chip lithography	14 nm	3 nm
Die size	484 mm2	no data
Maximum case temperature (TCase)	66 °C	no data
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Xeon W-2191B and EPYC 9845 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	2066	SP5
Power consumption (TDP)	140 Watt	390 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon W-2191B and EPYC 9845. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
TSX	+	-
Precision Boost 2	no data	+

Security technologies

Xeon W-2191B and EPYC 9845 technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon W-2191B and EPYC 9845 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon W-2191B and EPYC 9845. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR5
Maximum memory size	512 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	85.33 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 W-2191B and EPYC 9845.

PCIe version	3.0	5.0
PCI Express lanes	48	128

Pros & cons summary

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Recency	21 December 2017	10 October 2024
Physical cores	18	160
Threads	36	320
Chip lithography	14 nm	3 nm
Power consumption (TDP)	140 Watt	390 Watt

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