Comparison of Intel Core i9-7920X and Intel Core i9-7940X

Attribute	Intel Core i9-7940X ×	Intel Core i9-7920X ×
General Information
Brand	Intel	Intel
Series	Intel Core i9	Intel Core i9
Model	Intel Core i9-7940X	Intel Core i9-7920X
CPU Cores and Base Frequency
CPU Cores	14	12
Frequency (GHz)	3.1	2.9
CPU Threads	28	24
Core architecture	normal	normal
Hyperthreading	+	+
Overclocking	+	+
Turbo (1 Core) (GHz)	4.3	4.3
Turbo (12 Cores) (GHz)	-	3.7
Turbo (14 Cores) (GHz)	3.7	-
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	DDR4-2666
PCIe lanes	44	44
PCIe version	3.0	3.0
ECC	-	-
Memory channels	4	4
Technical details
Release date (year)	2017	2017
Technology (Nm)	14	14
Socket	LGA 2066	LGA 2066
Virtualization	vt-d vt-x	vt-d vt-x
L3-Cache (MB)	19	16
Architecture	Skylake-X	Skylake-X
Instruction set (ISA)	x86-64 (64 bit)	x86-64 (64 bit)
Thermal Management
TDP (PL1) (W)	165	165
Benchmarks
Estimated results for PassMark CPU Mark	25,430	23,290
Geekbench 5, 64bit (Single-Core)	1,158	1,126
Geekbench 5, 64bit (Multi-Core)	12,964	11,498
Cinebench R15 (Single-Core)	188	188
Cinebench R15 (Multi-Core)	2,849	2,438
Cinebench R11.5, 64bit (Single-Core)	2.19	2.19
Cinebench R11.5, 64bit (Multi-Core)	31.21	26.73
Geekbench 3, 64bit (Single-Core)	4,876	4,876
Geekbench 3, 64bit (Multi-Core)	53,446	45,772
Blender 2.81 (bmw27)	121.7	120.9