Follow us
Share link
Submit benchmark
VS
Intel Core i7-8700K vs Intel Core i7-2640M
Last updated:
Benchmarks
Performance Overview
Average performance across multiple benchmarks
Single-core performance
Multi-core performance
Geekbench 6 Single-Core
Single-core performance
Intel Core i7-8700K
100 %
6C / 12T · 4.70 GHz
Intel Core i7-2640M
38 %
2C / 4T · 3.50 GHz
Geekbench 6 Multi-Core
Multi-core performance
Intel Core i7-8700K
100 %
6C / 12T · 4.30 GHz
Intel Core i7-2640M
18 %
2C / 4T · 2.80 GHz
Geekbench 5, 64bit Single-Core
Single-core performance
Intel Core i7-8700K
100 %
6C / 12T · 4.70 GHz
Intel Core i7-2640M
53 %
2C / 4T · 3.50 GHz
Geekbench 5, 64bit Multi-Core
Multi-core performance
Intel Core i7-8700K
100 %
6C / 12T · 4.30 GHz
Intel Core i7-2640M
21 %
2C / 4T · 2.80 GHz
iGPU - FP32 Performance (Single-precision GFLOPS)
Intel Core i7-8700K
100 %
Intel UHD Graphics 630
Intel Core i7-2640M
54 %
Intel HD Graphics 3000
CPU-Z Benchmark 17 Multi-Core
Multi-core performance
Intel Core i7-8700K
100 %
6C / 12T · 3.70 GHz
Intel Core i7-2640M
21 %
2C / 4T · 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
Blender 2.81 (bmw27)
190 entries
190 entries
CPU-Z Benchmark 17 (SC)
250 entries
250 entries
CPU-Z Benchmark 17 (MC)
751 entries
751 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
Geekbench 3 (SC)
945 entries
945 entries
Geekbench 3 (MC)
941 entries
941 entries
Cinebench R11.5 (SC)
826 entries
826 entries
Cinebench R11.5 (MC)
837 entries
837 entries
Cinebench R11.5 iGPU
383 entries
383 entries
Specifications
At a glance
|
Wischen
|
Intel Core i7-8700K | Intel Core i7-2640M |
|---|---|---|
| Family | Intel Core i7 (300) | Intel Core i7 (300) |
| CPU group | Intel Core i 8000 (20) | Intel Core i 2000M (46) |
| Architecture | Coffee Lake S | Sandy Bridge H |
| Technology | 14 nm | 32 nm |
| Segment | Desktop | Notebook |
| Socket | LGA 1151-2 | BGA 1023 |
| Predecessor | Intel Core i7-7700K | |
| Successor | Intel Core i7-9700K |
CPU Cores and Base Frequency
|
Wischen
|
Intel Core i7-8700K | Intel Core i7-2640M |
|---|---|---|
| CPU Cores / Threads | 6 / 12 | 2 / 4 |
| Hyperthreading / SMT | ✓ | ✓ |
| Core architecture | normal | normal |
| Cores: | 6x | 2x |
| Frequency: | 3.70 GHz | 2.80 GHz |
| Turbo (1 Core): | 4.70 GHz | 3.50 GHz |
| Turbo (All Cores): | 4.30 GHz | |
| L2-Cache | ||
| L3-Cache | 12.00 MB | 4.00 MB |
| Overclocking | ✓ | ✗ |
Integrated graphics (iGPU)
|
Wischen
|
Intel Core i7-8700K | Intel Core i7-2640M |
|---|---|---|
| GPU name | Intel UHD Graphics 630 | Intel HD Graphics 3000 |
| GPU frequency | 0.35 - 1.20 GHz | 0.65 - 1.30 GHz |
| CUs / Shader | 24 / 192 | 12 / 96 |
| Raytracing | ✗ | ✗ |
| Max. displays | 3 | 2 |
| Max. GPU Memory | 64 GB | 2 GB |
| Technology | 14 nm | 32 nm |
| Release date | Q4/2017 | Q1/2011 |
NPU AI performance
|
Wischen
|
Intel Core i7-8700K | Intel Core i7-2640M |
|---|---|---|
| AI hardware | ||
| AI specifications | ||
| NPU + CPU + iGPU |
Memory & PCIe
|
Wischen
|
Intel Core i7-8700K | Intel Core i7-2640M |
|---|---|---|
| Memory | DDR4-2666 (42.7 GB/s) | DDR3-1333 (21.3 GB/s) DDR3-1066 (17.1 GB/s) |
| Max. Memory | 128 GB | 16 GB |
| Memory channels | 2 | 2 |
| ECC | No | No |
| PCIe | 3.0 x 16 | 2.0 x 16 |
| PCIe Bandwidth | 15.8 GB/s | 8.0 GB/s |
Thermal Management
|
Wischen
|
Intel Core i7-8700K | Intel Core i7-2640M |
|---|---|---|
| TDP | 95 W | 35 W |
| TDP (PL2) | ||
| TDP up | ||
| TDP down | ||
| T. junction max. | 100 °C |
Technical details
|
Wischen
|
Intel Core i7-8700K | Intel Core i7-2640M |
|---|---|---|
| Chip design | Monolithic | Monolithic |
| AES-NI | ✓ | ✓ |
| Operating systems | Windows 10, Windows 11, Linux | Windows 10, Linux |
| Instruction set | x86-64 (64 bit) | x86-64 (64 bit) |
| ISA extensions | SSE4.1, SSE4.2, AVX2 | SSE4.1, SSE4.2, AVX |
| Release date | Q4/2017 | Q4/2011 |
| Release price | 370 $ | 280 $ |
| 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 i7-8700K is 4.4 stars (106 ratings), while Intel Core i7-2640M has received 4.7 stars (13 ratings).
Click on the stars to rate one or both processors.
Most popular CPUs in both categories
1
Apple M5 Max (18-CPU 32-GPU)
18C / 18T · 4.61 GHz
2
Apple M3 Ultra (28-CPU 60-GPU)
28C / 28T · 4.06 GHz
3
Apple M2 Ultra (76-GPU)
24C / 24T · 3.50 GHz
4
Apple M5 Max (18-CPU 40-GPU)
18C / 18T · 4.61 GHz
5
Apple M3 Ultra (32-CPU 80-GPU)
32C / 32T · 4.06 GHz
6
Apple M1 Ultra (48-GPU)
20C / 20T · 3.20 GHz
7
Apple M5 Pro (15-CPU 16-GPU)
15C / 15T · 4.61 GHz
8
Intel Core i7-2640M
2C / 4T · 3.50 GHz
9
Intel Core i7-8700K
6C / 12T · 4.70 GHz
Popular Comparisons
