Intel Core i7 7740X vs Intel Core i9 9940X
We compared two desktop CPUs: Intel Core i7 7740X with 4 cores 4.3GHz and Intel Core i9 9940X with 14 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i7 7740X 's Advantages
Higher base frequency (4.3GHz vs 3.3GHz)
Lower TDP (112W vs 165W)
Intel Core i9 9940X 's Advantages
Released 1 years and 5 months late
Larger memory bandwidth (85GB/s vs 42.7GB/s)
Larger L3 cache size (20MB vs 8MB)
Score
Benchmark
Geekbench 6 Single Core
Intel Core i7 7740X
+16%
1553
Intel Core i9 9940X
1328
Geekbench 6 Multi Core
Intel Core i7 7740X
5516
Intel Core i9 9940X
+77%
9787
Geekbench 5 Single Core
Intel Core i7 7740X
+8%
1291
Intel Core i9 9940X
1189
Geekbench 5 Multi Core
Intel Core i7 7740X
5001
Intel Core i9 9940X
+187%
14374
Passmark CPU Single Core
Intel Core i7 7740X
+5%
2759
Intel Core i9 9940X
2608
Passmark CPU Multi Core
Intel Core i7 7740X
9824
Intel Core i9 9940X
+188%
28355
General Parameters
May 2017
Release Date
Oct 2018
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Kaby Lake
Core Architecture
Skylake
i7-7740X
Processor Number
i9-9940X
LGA-2066
Socket
LGA-2066
N/A
Integrated Graphics
N/A
Package
14 nm
Manufacturing Process
14 nm
112 W
Power Consumption
165 W
100 °C
Peak Operating Temperature
88 °C
CPU Performance
4
Performance Cores
14
8
Performance Core Threads
28
4.3 GHz
Performance Core Base Frequency
3.3 GHz
4.5 GHz
Performance Core Turbo Frequency
4.4 GHz
4
Total Core Count
14
8
Total Thread Count
28
-
Bus Frequency
100 MHz
43x
Multiplier
33x
64 K per core
L1 Cache
64 K per core
256 K per core
L2 Cache
1 MB per core
8 MB shared
L3 Cache
20 MB shared
Yes
Unlocked Multiplier
Yes
Memory Parameters
DDR4-2666
Memory Types
DDR4-2666
64 GB
Max Memory Size
128 GB
2
Max Memory Channels
4
42.7 GB/s
Max Memory Bandwidth
85 GB/s
No
ECC Memory Support
No
Miscellaneous
3.0
PCIe Version
3.0
16
PCIe Lanes
44
SSE4.1, SSE4.2, AVX-2
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2, AVX-512
