Intel Core i7 7820X vs Intel Core i9 9940X
CPU · Specs Compare
General Parameters
Release Date
May 2017
Oct 2018
Manufacturer
Intel
Intel
Type
Desktop
Desktop
Instruction Set
x86-64
x86-64
Core Architecture
Skylake
Skylake
Processor Number
i7-7820X
i9-9940X
Integrated Graphics
N/A
N/A
Package
Manufacturing Process
14 nm
14 nm
Socket
LGA-2066
LGA-2066
Power Consumption
140 W
165 W
Peak Operating Temperature
99 °C
88 °C
CPU Performance
Performance Cores
8
14
Performance Core Threads
16
28
Performance Core Base Frequency
3.6 GHz
3.3 GHz
Performance Core Turbo Frequency
4.3 GHz
4.4 GHz
Total Core Count
8
14
Total Thread Count
16
28
Bus Frequency
100 MHz
100 MHz
Multiplier
36x
33x
L1 Cache
64 K per core
64 K per core
L2 Cache
1 MB per core
1 MB per core
L3 Cache
11 MB shared
20 MB shared
Unlocked Multiplier
Yes
Yes
Memory Parameters
Memory Types
DDR4-2666
DDR4-2666
Max Memory Size
128 GB
128 GB
Max Memory Channels
4
4
Max Memory Bandwidth
79.47 GB/s
85 GB/s
ECC Memory Support
No
No
Miscellaneous
PCIe Version
3.0
3.0
PCIe Lanes
28
44
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2, AVX-512
SSE4.1, SSE4.2, AVX-2, AVX-512
Benchmark
Cinebench R23
1,338
1,228
Cinebench R23
13,358
15,351
Geekbench 6
1,252
1,328
Geekbench 5
1,120
1,189
Geekbench 6
7,510
9,787
Geekbench 5
8,504
14,374
Passmark CPU
2,536
—
Passmark CPU
17,189
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.