Comparison of Intel Core i5-7640X and Intel Core i7-7740X

Attribute	Intel Core i7-7740X ×	Intel Core i5-7640X ×
General Information
Brand	Intel	Intel
Series	Intel Core i7	Intel Core i5
Model	Intel Core i7-7740X	Intel Core i5-7640X
CPU Cores and Base Frequency
CPU Cores	4	4
Frequency (GHz)	4.3	4
CPU Threads	8	8
Core architecture	normal	normal
Hyperthreading	+	+
Overclocking	+	+
Turbo (1 Core) (GHz)	4.5	4.2
Turbo (4 Cores) (GHz)	4.3	4.2
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	16	16
PCIe version	3.0	3.0
ECC	-	-
Memory channels	2	2
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)	8	6
Architecture	Kaby Lake-X	Kaby Lake-X
Instruction set (ISA)	x86-64 (64 bit)	x86-64 (64 bit)
Thermal Management
TDP (PL1) (W)	112	112
Benchmarks
Estimated results for PassMark CPU Mark	11,855	9,215
Geekbench 5, 64bit (Single-Core)	1,277	1,153
Geekbench 5, 64bit (Multi-Core)	4,681	3,644
Cinebench R15 (Single-Core)	200	180
Cinebench R15 (Multi-Core)	976	720
Cinebench R11.5, 64bit (Single-Core)	2.36	2.2
Cinebench R11.5, 64bit (Multi-Core)	10.73	7.64
Geekbench 3, 64bit (Single-Core)	5,133	4,489
Geekbench 3, 64bit (Multi-Core)	18,340	14,204