Intel Core i7 7800X vs Intel Core i5 7640X
We compared two desktop CPUs: Intel Core i7 7800X with 6 cores 3.5GHz and Intel Core i5 7640X with 4 cores 4.0GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i7 7800X 's Advantages
Larger memory bandwidth (79.47GB/s vs 42.7GB/s)
Larger L3 cache size (8MB vs 6MB)
Intel Core i5 7640X 's Advantages
Higher specification of memory (2666 vs 2400)
Higher base frequency (4.0GHz vs 3.5GHz)
Lower TDP (112W vs 140W)
Score
Benchmark
Geekbench 6 Single Core
Intel Core i7 7800X
1362
Intel Core i5 7640X
+4%
1419
Geekbench 6 Multi Core
Intel Core i7 7800X
+63%
6082
Intel Core i5 7640X
3726
Geekbench 5 Single Core
Intel Core i7 7800X
1069
Intel Core i5 7640X
+15%
1237
Geekbench 5 Multi Core
Intel Core i7 7800X
+55%
6578
Intel Core i5 7640X
4230
Passmark CPU Single Core
Intel Core i7 7800X
2409
Intel Core i5 7640X
+3%
2505
Passmark CPU Multi Core
Intel Core i7 7800X
+91%
12894
Intel Core i5 7640X
6735
General Parameters
May 2017
Release Date
May 2017
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Skylake
Core Architecture
Kaby Lake
i7-7800X
Processor Number
i5-7640X
LGA-2066
Socket
LGA-2066
N/A
Integrated Graphics
N/A
Package
14 nm
Manufacturing Process
14 nm
140 W
Power Consumption
112 W
100 °C
Peak Operating Temperature
100 °C
CPU Performance
6
Performance Cores
4
12
Performance Core Threads
4
3.5 GHz
Performance Core Base Frequency
4.0 GHz
4 GHz
Performance Core Turbo Frequency
4.2 GHz
6
Total Core Count
4
12
Total Thread Count
4
100 MHz
Bus Frequency
-
35x
Multiplier
39x
64 K per core
L1 Cache
64 K per core
1 MB per core
L2 Cache
256 K per core
8 MB shared
L3 Cache
6 MB shared
Yes
Unlocked Multiplier
Yes
Memory Parameters
DDR4-2400
Memory Types
DDR4-2666
128 GB
Max Memory Size
64 GB
4
Max Memory Channels
2
79.47 GB/s
Max Memory Bandwidth
42.7 GB/s
No
ECC Memory Support
No
Miscellaneous
3.0
PCIe Version
3.0
28
PCIe Lanes
16
SSE4.1, SSE4.2, AVX-2, AVX-512
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2
