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