Intel Core i5 7640X vs Intel Core i5 8400T
We compared two desktop CPUs: Intel Core i5 7640X with 4 cores 4.0GHz and Intel Core i5 8400T with 6 cores 1.7GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i5 7640X Advantages
Larger memory bandwidth (42.7GB/s vs 41.6GB/s)
Higher base frequency (4.0GHz vs 1.7GHz)
Intel Core i5 8400T Advantages
Released 11 months late
Integrated graphics card
Larger L3 cache size (9MB vs 6MB)
Lower TDP (35W vs 112W)
Score
Benchmark
Geekbench 6 Single Core
Intel Core i5 7640X
+26%
1419
Intel Core i5 8400T
1120
Geekbench 6 Multi Core
Intel Core i5 7640X
+1%
3726
Intel Core i5 8400T
3670
Geekbench 5 Single Core
Intel Core i5 7640X
+39%
1237
Intel Core i5 8400T
886
Geekbench 5 Multi Core
Intel Core i5 7640X
+5%
4230
Intel Core i5 8400T
4000
Passmark CPU Single Core
Intel Core i5 7640X
+30%
2505
Intel Core i5 8400T
1917
Passmark CPU Multi Core
Intel Core i5 7640X
6735
Intel Core i5 8400T
+10%
7447
General Parameters
May 2017
Release Date
Apr 2018
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Kaby Lake
Core Architecture
Coffee Lake
i5-7640X
Processor Number
i5-8400T
LGA-2066
Socket
LGA-1151
N/A
Integrated Graphics
UHD Graphics 630
Package
14 nm
Manufacturing Process
14 nm
112 W
Power Consumption
35 W
100 °C
Peak Operating Temperature
100 °C
CPU Performance
4
Performance Cores
6
4
Performance Core Threads
6
4.0 GHz
Performance Core Base Frequency
1.7 GHz
4.2 GHz
Performance Core Turbo Frequency
3.3 GHz
4
Total Core Count
6
4
Total Thread Count
6
-
Bus Frequency
100 MHz
39x
Multiplier
17x
64 K per core
L1 Cache
64 K per core
256 K per core
L2 Cache
256 K per core
6 MB shared
L3 Cache
9 MB shared
Yes
Unlocked Multiplier
No
Memory Parameters
DDR4-2666
Memory Types
DDR4-2666
64 GB
Max Memory Size
128 GB
2
Max Memory Channels
2
42.7 GB/s
Max Memory Bandwidth
41.6 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
-
Integrated Graphics
true
-
GPU Base Frequency
350 MHz
-
GPU Max Dynamic Frequency
1050 MHz
-
Shader Units
192
-
Texture Units
24
-
Raster Operation Units
3
-
Execution Units
24
-
Power Consumption
15 W
-
Max Resolution
4096x2304 - 60 Hz
-
Graphics Performance
0.38 TFLOPS
Miscellaneous
3.0
PCIe Version
3.0
16
PCIe Lanes
16
SSE4.1, SSE4.2, AVX-2
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2
