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Intel Core i7-6900K vs Intel Core i5-12400
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 i7-6900K
66 %
8C / 16T · 3.70 GHz
Intel Core i5-12400
100 %
6C / 12T · 4.40 GHz
Cinebench 2026 Multi-Core
Multi-core performance
Intel Core i7-6900K
93 %
8C / 16T · 3.70 GHz
Intel Core i5-12400
100 %
6C / 12T · 4.40 GHz
Cinebench R23 Single-Core
Single-core performance
Intel Core i7-6900K
71 %
8C / 16T · 3.70 GHz
Intel Core i5-12400
100 %
6C / 12T · 4.40 GHz
Cinebench R23 Multi-Core
Multi-core performance
Intel Core i7-6900K
91 %
8C / 16T · 3.20 GHz
Intel Core i5-12400
100 %
6C / 12T · 4.00 GHz
Geekbench 6 Single-Core
Single-core performance
Intel Core i7-6900K
57 %
8C / 16T · 3.70 GHz
Intel Core i5-12400
100 %
6C / 12T · 4.40 GHz
Geekbench 6 Multi-Core
Multi-core performance
Intel Core i7-6900K
85 %
8C / 16T · 3.20 GHz
Intel Core i5-12400
100 %
6C / 12T · 4.00 GHz
Geekbench 5, 64bit Single-Core
Single-core performance
Intel Core i7-6900K
66 %
8C / 16T · 3.70 GHz
Intel Core i5-12400
100 %
6C / 12T · 4.40 GHz
Geekbench 5, 64bit Multi-Core
Multi-core performance
Intel Core i7-6900K
81 %
8C / 16T · 3.20 GHz
Intel Core i5-12400
100 %
6C / 12T · 4.00 GHz
CPU-Z Benchmark 17 Multi-Core
Multi-core performance
Intel Core i7-6900K
93 %
8C / 16T · 3.20 GHz
Intel Core i5-12400
100 %
6C / 12T · 2.50 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 (MC)
751 entries
751 entries
V-Ray CPU-Render
251 entries
251 entries
CPU performance per watt (efficiency)
140 entries
140 entries
Specifications
At a glance
|
Wischen
|
Intel Core i7-6900K | Intel Core i5-12400 |
|---|---|---|
| Family | Intel Core i7 Extreme Edition (24) | Intel Core i5 (336) |
| CPU group | Intel Core i 6000 (24) | Intel Core i 12000 (34) |
| Architecture | Skylake S | Alder Lake S |
| Technology | 14 nm | 10 nm |
| Segment | Desktop | Desktop |
| Socket | LGA 2011-3 | LGA 1700 |
| Predecessor | Intel Core i5-11400 | |
| Successor | Intel Core i5-13400 |
CPU Cores and Base Frequency
|
Wischen
|
Intel Core i7-6900K | Intel Core i5-12400 |
|---|---|---|
| CPU Cores / Threads | 8 / 16 | 6 / 12 |
| Hyperthreading / SMT | ✓ | ✓ |
| Core architecture | normal | normal |
| Cores: | 8x | 6x Golden Cove |
| Frequency: | 3.20 GHz | 2.50 GHz |
| Turbo (1 Core): | 3.70 GHz | 4.40 GHz |
| Turbo (All Cores): | 4.00 GHz | |
| L2-Cache | 7.50 MB | |
| L3-Cache | 20.00 MB | 18.00 MB |
| Overclocking | ✓ | ✗ |
Integrated graphics (iGPU)
|
Wischen
|
Intel Core i7-6900K | Intel Core i5-12400 |
|---|---|---|
| GPU name | no iGPU | Intel UHD Graphics 730 |
| GPU frequency | 0.30 - 1.45 GHz | |
| CUs / Shader | / | 24 / 192 |
| Raytracing | ✗ | ✗ |
| Max. displays | 3 | |
| Max. GPU Memory | 64 GB | |
| Technology | 14 nm | |
| Release date | Q1/2021 |
NPU AI performance
|
Wischen
|
Intel Core i7-6900K | Intel Core i5-12400 |
|---|---|---|
| AI hardware | ||
| AI specifications | ||
| NPU + CPU + iGPU |
Memory & PCIe
|
Wischen
|
Intel Core i7-6900K | Intel Core i5-12400 |
|---|---|---|
| Memory | DDR4-2400 (76.8 GB/s) | DDR5-4800 (76.8 GB/s) DDR4-3200 (51.2 GB/s) |
| Max. Memory | 128 GB | 128 GB |
| Memory channels | 4 | 2 |
| ECC | No | No |
| PCIe | 3.0 x 40 | 5.0 x 20 |
| PCIe Bandwidth | 39.4 GB/s | 78.8 GB/s |
Thermal Management
|
Wischen
|
Intel Core i7-6900K | Intel Core i5-12400 |
|---|---|---|
| TDP | 140 W | 65 W |
| TDP (PL2) | 117 W | |
| TDP up | ||
| TDP down | ||
| T. junction max. | 100 °C |
Technical details
|
Wischen
|
Intel Core i7-6900K | Intel Core i5-12400 |
|---|---|---|
| Chip design | Monolithic | Monolithic |
| AES-NI | ✓ | ✓ |
| Operating systems | Windows 10, 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, AVX2+ |
| Release date | Q2/2016 | Q1/2022 |
| Release price | 192 $ | |
| Documents | Technical data sheet | Technical data sheet |
User Reviews
Your rating
Here you can rate one or both of the processors. The average rating of Intel Core i7-6900K is 4.4 stars (8 ratings), while Intel Core i5-12400 has received 4.4 stars (181 ratings).
Click on the stars to rate one or both processors.
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