Comparison of AMD Epyc 7251 and AMD Phenom II X6 1065T

Attribute	AMD Epyc 7251 ×	AMD Phenom II X6 1065T ×
General Information
Brand	AMD	AMD
Series	AMD Epyc	AMD Phenom II
Model	AMD Epyc 7251	AMD Phenom II X6 1065T
CPU Cores and Base Frequency
CPU Cores	8	6
Frequency (GHz)	2.1	2.9
CPU Threads	16	6
Core architecture	normal	normal
Hyperthreading	+	-
Overclocking	-	+
Turbo (1 Core) (GHz)	2.9	3.4
Turbo (6 Cores) (GHz)	-	3.4
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	DDR4-2666	DDR2-1066
PCIe lanes	128	-
PCIe version	3.0	-
ECC	+	-
Memory channels	8	2
Technical details
Release date (year)	2017	2010
Technology (Nm)	14	-
Socket	SP3	AM3
Virtualization	amd-v sev	amd-rvi amd-v
L3-Cache (MB)	32	6
Architecture	Zen	Thuban
Instruction set (ISA)	x86-64 (64 bit)	x86-64 (64 bit)
Thermal Management
TDP (PL1) (W)	120	95
Benchmarks
Estimated results for PassMark CPU Mark	11,809	5,392
Cinebench R15 (Single-Core)	128	85
Cinebench R15 (Multi-Core)	1,093	460
Cinebench R11.5, 64bit (Single-Core)	1.57	1.03
Cinebench R11.5, 64bit (Multi-Core)	11.04	5.34
Geekbench 3, 64bit (Single-Core)	3,410	1,778
Geekbench 3, 64bit (Multi-Core)	18,947	8,731