Intel Core i7 8665U vs Intel Core i5 8257U
We compared two laptop CPUs: Intel Core i7 8665U with 4 cores 1.9GHz and Intel Core i5 8257U with 4 cores 1.4GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i7 8665U 's Advantages
Higher base frequency (1.9GHz vs 1.4GHz)
Larger L3 cache size (8MB vs 6MB)
Intel Core i5 8257U 's Advantages
Better graphics card performance
Score
Benchmark
Cinebench R23 Single Core
Intel Core i7 8665U
+24%
1244
Intel Core i5 8257U
996
Cinebench R23 Multi Core
Intel Core i7 8665U
3752
Intel Core i5 8257U
+7%
4031
Geekbench 6 Single Core
Intel Core i7 8665U
+22%
1484
Intel Core i5 8257U
1210
Geekbench 6 Multi Core
Intel Core i7 8665U
3939
Intel Core i5 8257U
3922
Blender
Intel Core i7 8665U
+80%
54
Intel Core i5 8257U
30
Geekbench 5 Single Core
Intel Core i7 8665U
+15%
1056
Intel Core i5 8257U
916
Geekbench 5 Multi Core
Intel Core i7 8665U
3056
Intel Core i5 8257U
+25%
3820
Passmark CPU Single Core
Intel Core i7 8665U
2192
Intel Core i5 8257U
+5%
2302
Passmark CPU Multi Core
Intel Core i7 8665U
6232
Intel Core i5 8257U
+22%
7609
General Parameters
Apr 2019
Release Date
Jul 2019
Intel
Manufacturer
Intel
Laptop
Type
Laptop
x86-64
Instruction Set
x86-64
Whiskey Lake
Core Architecture
Coffee Lake
i7-8665U
Processor Number
i5-8257U
BGA-1528
Socket
BGA-1528
UHD Graphics 620
Integrated Graphics
Iris Plus Graphics 645
-
-
-
Package
-
-
-
14 nm
Manufacturing Process
14 nm
-
-
-
15 W
Power Consumption
15 W
-
-
-
100 °C
Peak Operating Temperature
100 °C
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CPU Performance
4
Performance Cores
4
8
Performance Core Threads
8
1.9 GHz
Performance Core Base Frequency
1.4 GHz
4.8 GHz
Performance Core Turbo Frequency
3.9 GHz
-
-
-
-
-
-
-
-
-
-
-
-
4
Total Core Count
4
8
Total Thread Count
8
-
-
-
19x
Multiplier
14x
-
-
-
32 K per core
L1 Cache
32 K per core
256 K per core
L2 Cache
256 K per core
8 MB shared
L3 Cache
6 MB shared
No
Unlocked Multiplier
No
-
-
-
-
-
-
-
-
-
-
-
-
-
Memory Parameters
DDR4-2400, LPDDR3-2133
Memory Types
DDR4-2400, LPDDR3-2133
64 GB
Max Memory Size
32 GB
2
Max Memory Channels
2
37.5 GB/s
Max Memory Bandwidth
37.5 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
true
Integrated Graphics
true
300 MHz
GPU Base Frequency
300 MHz
1150 MHz
GPU Max Dynamic Frequency
1050 MHz
192
Shader Units
384
24
Texture Units
48
3
Raster Operation Units
6
24
Execution Units
48
15 W
Power Consumption
15 W
4096x2304 - 60 Hz
Max Resolution
4096x2304 - 60 Hz
0.38 TFLOPS
Graphics Performance
0.81 TFLOPS
AI Accelerator
-
-
-
-
-
-
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
-
