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Intel Core i5-10400 vs Intel Core i7-8665U
Last updated:
Benchmarks
Performance Overview
Average performance across multiple benchmarks
Single-core performance
Multi-core performance
Cinebench 2026 Single-Thread
Single-core performance
Intel Core i5-10400
100 %
6C / 12T · 4.30 GHz
Intel Core i7-8665U
94 %
4C / 8T · 4.80 GHz
Cinebench 2026 Multi-Core
Multi-core performance
Intel Core i5-10400
100 %
6C / 12T · 4.30 GHz
Intel Core i7-8665U
47 %
4C / 8T · 4.80 GHz
Geekbench 6 Single-Core
Single-core performance
Intel Core i5-10400
100 %
6C / 12T · 4.30 GHz
Intel Core i7-8665U
100 %
4C / 8T · 4.80 GHz
Geekbench 6 Multi-Core
Multi-core performance
Intel Core i5-10400
100 %
6C / 12T · 4.00 GHz
Intel Core i7-8665U
60 %
4C / 8T · 2.80 GHz
Cinebench R20 Single-Core
Single-core performance
Intel Core i5-10400
97 %
6C / 12T · 4.30 GHz
Intel Core i7-8665U
100 %
4C / 8T · 4.80 GHz
Geekbench 5, 64bit Single-Core
Single-core performance
Intel Core i5-10400
99 %
6C / 12T · 4.30 GHz
Intel Core i7-8665U
100 %
4C / 8T · 4.80 GHz
Cinebench R20 Multi-Core
Multi-core performance
Intel Core i5-10400
100 %
6C / 12T · 4.00 GHz
Intel Core i7-8665U
48 %
4C / 8T · 2.80 GHz
Geekbench 5, 64bit Multi-Core
Multi-core performance
Intel Core i5-10400
100 %
6C / 12T · 4.00 GHz
Intel Core i7-8665U
56 %
4C / 8T · 2.80 GHz
iGPU - FP32 Performance (Single-precision GFLOPS)
Intel Core i5-10400
100 %
Intel UHD Graphics 630
Intel Core i7-8665U
96 %
Intel UHD Graphics 620
CPU-Z Benchmark 17 Multi-Core
Multi-core performance
Intel Core i5-10400
100 %
6C / 12T · 2.90 GHz
Intel Core i7-8665U
55 %
4C / 8T · 1.90 GHz
Cinebench R15 (Single-Core)
Single-core performance
Intel Core i5-10400
100 %
6C / 12T · 4.30 GHz
Intel Core i7-8665U
94 %
4C / 8T · 4.80 GHz
Cinebench R15 (Multi-Core)
Multi-core performance
Intel Core i5-10400
100 %
6C / 12T · 4.00 GHz
Intel Core i7-8665U
45 %
4C / 8T · 2.80 GHz
More benchmarks
Cinebench 2026 (ST)
218 entries
218 entries
Cinebench 2026 (MC)
219 entries
219 entries
Cinebench 2024 (SC)
427 entries
427 entries
Cinebench 2024 (MC)
422 entries
422 entries
Cinebench R23 (SC)
690 entries
690 entries
Cinebench R23 (MC)
665 entries
665 entries
Geekbench 6 (SC)
1,989 entries
1,989 entries
Geekbench 6 (MC)
1,927 entries
1,927 entries
Cinebench R20 (SC)
666 entries
666 entries
Geekbench 5 (SC)
2,512 entries
2,512 entries
Cinebench R20 (MC)
615 entries
615 entries
Geekbench 5 (MC)
2,483 entries
2,483 entries
FP32 SP (iGPU)
2,219 entries
2,219 entries
3DMark Timespy (iGPU)
534 entries
534 entries
Blender 3.1 Benchmark
213 entries
213 entries
PassMark CPU-Mark
2,504 entries
2,504 entries
CPU-Z Benchmark 17 (SC)
250 entries
250 entries
CPU-Z Benchmark 17 (MC)
751 entries
751 entries
Monero Hashrate
94 entries
94 entries
V-Ray CPU-Render
251 entries
251 entries
Cinebench R15 (SC)
1,113 entries
1,113 entries
Cinebench R15 (MC)
1,110 entries
1,110 entries
Specifications
At a glance
|
Wischen
|
Intel Core i5-10400 | Intel Core i7-8665U |
|---|---|---|
| Family | Intel Core i5 (336) | Intel Core i7 (300) |
| CPU group | Intel Core i 10000 (43) | Intel Core i 8000U (WL) (8) |
| Architecture | Comet Lake S | Whiskey Lake U |
| Technology | 14 nm | 14 nm |
| Segment | Desktop | Notebook |
| Socket | LGA 1200 | BGA 1356 |
| Predecessor | Intel Core i5-9400 | |
| Successor | Intel Core i5-11400 |
CPU Cores and Base Frequency
|
Wischen
|
Intel Core i5-10400 | Intel Core i7-8665U |
|---|---|---|
| CPU Cores / Threads | 6 / 12 | 4 / 8 |
| Hyperthreading / SMT | ✓ | ✓ |
| Core architecture | normal | normal |
| Cores: | 6x | 4x |
| Frequency: | 2.90 GHz | 1.90 GHz |
| Turbo (1 Core): | 4.30 GHz | 4.80 GHz |
| Turbo (All Cores): | 4.00 GHz | 2.80 GHz |
| L2-Cache | ||
| L3-Cache | 12.00 MB | 8.00 MB |
| Overclocking | ✗ | ✗ |
Integrated graphics (iGPU)
|
Wischen
|
Intel Core i5-10400 | Intel Core i7-8665U |
|---|---|---|
| GPU name | Intel UHD Graphics 630 | Intel UHD Graphics 620 |
| GPU frequency | 0.35 - 1.20 GHz | 0.30 - 1.15 GHz |
| CUs / Shader | 24 / 192 | 24 / 192 |
| Raytracing | ✗ | ✗ |
| Max. displays | 3 | 3 |
| Max. GPU Memory | 64 GB | 16 GB |
| Technology | 14 nm | 14 nm |
| Release date | Q4/2017 | Q3/2016 |
NPU AI performance
|
Wischen
|
Intel Core i5-10400 | Intel Core i7-8665U |
|---|---|---|
| AI hardware | ||
| AI specifications | ||
| NPU + CPU + iGPU |
Memory & PCIe
|
Wischen
|
Intel Core i5-10400 | Intel Core i7-8665U |
|---|---|---|
| Memory | DDR4-2666 (42.7 GB/s) | DDR4-2400 (38.4 GB/s) |
| Max. Memory | 128 GB | 64 GB |
| Memory channels | 2 | 2 |
| ECC | No | No |
| PCIe | 3.0 x 16 | 3.0 x 16 |
| PCIe Bandwidth | 15.8 GB/s | 15.8 GB/s |
Thermal Management
|
Wischen
|
Intel Core i5-10400 | Intel Core i7-8665U |
|---|---|---|
| TDP | 65 W | 15 W |
| TDP (PL2) | ||
| TDP up | 25 W | |
| TDP down | 10 W | |
| T. junction max. | 100 °C | 100 °C |
Technical details
|
Wischen
|
Intel Core i5-10400 | Intel Core i7-8665U |
|---|---|---|
| Chip design | Monolithic | Monolithic |
| AES-NI | ✓ | ✓ |
| Operating systems | Windows 10, Windows 11, Linux | Windows 10, Windows 11, Linux |
| Instruction set | x86-64 (64 bit) | x86-64 (64 bit) |
| ISA extensions | SSE4.1, SSE4.2, AVX2 | SSE4.1, SSE4.2, AVX2 |
| Release date | Q2/2020 | Q2/2019 |
| Release price | 182 $ | 409 $ |
| Documents | Technical data sheet |
User Reviews
Your rating
Here you can rate one or both of the processors. The average rating of Intel Core i5-10400 is 3.9 stars (105 ratings), while Intel Core i7-8665U has received 4.2 stars (37 ratings).
Click on the stars to rate one or both processors.
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Intel Core i7-8665U
4C / 8T · 4.80 GHz
9
Intel Core i5-10400
6C / 12T · 4.30 GHz
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