Intel Core i9 7900X vs Intel Core i7 7820X
We compared two desktop CPUs: Intel Core i9 7900X with 10 cores 3.3GHz and Intel Core i7 7820X with 8 cores 3.6GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i9 7900X 's Advantages
Larger L3 cache size (14MB vs 11MB)
Intel Core i7 7820X 's Advantages
Higher base frequency (3.6GHz vs 3.3GHz)
Score
Benchmark
Cinebench R23 Single Core
Intel Core i9 7900X
1203
Intel Core i7 7820X
+11%
1338
Cinebench R23 Multi Core
Intel Core i9 7900X
+12%
14998
Intel Core i7 7820X
13358
Geekbench 6 Single Core
Intel Core i9 7900X
+5%
1323
Intel Core i7 7820X
1252
Geekbench 6 Multi Core
Intel Core i9 7900X
+13%
8536
Intel Core i7 7820X
7510
Geekbench 5 Single Core
Intel Core i9 7900X
1127
Intel Core i7 7820X
1120
Geekbench 5 Multi Core
Intel Core i9 7900X
+19%
10189
Intel Core i7 7820X
8504
Passmark CPU Single Core
Intel Core i9 7900X
2556
Intel Core i7 7820X
2536
Passmark CPU Multi Core
Intel Core i9 7900X
+22%
20991
Intel Core i7 7820X
17189
General Parameters
May 2017
Release Date
May 2017
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Skylake
Core Architecture
Skylake
i9-7900X
Processor Number
i7-7820X
LGA-2066
Socket
LGA-2066
N/A
Integrated Graphics
N/A
Package
14 nm
Manufacturing Process
14 nm
140 W
Power Consumption
140 W
95 °C
Peak Operating Temperature
99 °C
CPU Performance
10
Performance Cores
8
20
Performance Core Threads
16
3.3 GHz
Performance Core Base Frequency
3.6 GHz
4.3 GHz
Performance Core Turbo Frequency
4.3 GHz
10
Total Core Count
8
20
Total Thread Count
16
100 MHz
Bus Frequency
100 MHz
33x
Multiplier
36x
64 K per core
L1 Cache
64 K per core
1 MB per core
L2 Cache
1 MB per core
14 MB shared
L3 Cache
11 MB shared
Yes
Unlocked Multiplier
Yes
Memory Parameters
DDR4-2666
Memory Types
DDR4-2666
128 GB
Max Memory Size
128 GB
4
Max Memory Channels
4
79.47 GB/s
Max Memory Bandwidth
79.47 GB/s
No
ECC Memory Support
No
Miscellaneous
3.0
PCIe Version
3.0
44
PCIe Lanes
28
SSE4.1, SSE4.2, AVX-2, AVX-512
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2, AVX-512
