Comparison of AMD Epyc 7251 and Intel Xeon E5-2643 v3

Attribute	Intel Xeon E5-2643 v3 ×	AMD Epyc 7251 ×
General Information
Brand	Intel	AMD
Series	Intel Xeon E5	AMD Epyc
Model	Intel Xeon E5-2643 v3	AMD Epyc 7251
CPU Cores and Base Frequency
CPU Cores	6	8
Frequency (GHz)	3.4	2.1
CPU Threads	12	16
Core architecture	normal	normal
Hyperthreading	+	+
Overclocking	-	-
Turbo (1 Core) (GHz)	3.7	2.9
Turbo (6 Cores) (GHz)	3.6	-
Turbo (8 Cores) (GHz)	-	2.9
Encryption
AES-NI	+	+
Hardware codec support
JPEG	No	No
h264	No	No
h265 / HEVC (8 bit)	No	No
h265 / HEVC (10 bit)	No	No
VP8	No	No
AV1	No	No
VC-1	No	No
VP9	No	No
AVC	No	No
Memory And PCIe
Memory type	DDR4-2133	DDR4-2666
PCIe lanes	40	128
PCIe version	3.0	3.0
ECC	+	+
Memory channels	4	8
Technical details
Release date (year)	2014	2017
Technology (Nm)	22	14
Socket	LGA 2011-3	SP3
Virtualization	vpro vt-d vt-x vt-x ept	amd-v sev
L3-Cache (MB)	20	32
Architecture	Haswell E	Zen
Instruction set (ISA)	x86-64 (64 bit)	x86-64 (64 bit)
Thermal Management
TDP (PL1) (W)	135	120
Benchmarks
Estimated results for PassMark CPU Mark	13,887	11,809
Geekbench 5, 64bit (Single-Core)	625	-
Geekbench 5, 64bit (Multi-Core)	2,816	-
Cinebench R15 (Single-Core)	142	128
Cinebench R15 (Multi-Core)	1,149	1,093
Cinebench R11.5, 64bit (Single-Core)	1.78	1.57
Cinebench R11.5, 64bit (Multi-Core)	11.7	11.04
Geekbench 3, 64bit (Single-Core)	3,844	3,410
Geekbench 3, 64bit (Multi-Core)	24,408	18,947