Intel Core i5 8400 vs i3 8300: performance comparison
VS
Intel Core i5 8400
Intel Core i3 8300
We compared two desktop CPUs: the 2.8 GHz Intel Core i5 8400 with 6-cores against the 3.7 GHz i3 8300 with 4-cores. On this page, you’ll find out which processor has better performance in benchmarks, games and other useful information.
- Review
- Differences
- Performance
- Specs
- Comments
Review
General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Core i5 8400
48
Core i3 8300
43
Performance
Measure performance when all cores are involved
Core i5 8400
23
Core i3 8300
14
Power Efficiency
The efficiency score of electricity consumption
Core i5 8400
44
Core i3 8300
45
NanoReview Final Score
Generic CPU rating
Core i5 8400
38
Core i3 8300
32
Key Differences
What are the key differences between 8300 and 8400
Advantages of Intel Core i5 8400
- Supports up to 128 GB DDR4-2666 RAM
- Has 2 more physical cores
- 17% faster in a single-core Geekbench v5 test — 1034 vs 884 points
- Has 1 MB larger L3 cache size
- Around 4.
1 GB/s (11%) higher theoretical memory bandwidth
Advantages of Intel Core i3 8300
- Newer — released 6-months later
- Consumes up to 5% less energy than the Core i5 8400 – 62 vs 65 Watt
Benchmarks
Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Core i5 8400
1028
Core i3 8300
n/a
Cinebench R23 (Multi-Core)
Core i5 8400
5824
Core i3 8300
n/a
Passmark CPU (Single-Core)
Core i5 8400
+6%
2398
Core i3 8300
2262
Passmark CPU (Multi-Core)
Core i5 8400
+48%
9179
Core i3 8300
6208
Geekbench 5 (Single-Core)
Core i5 8400
+17%
1033
Core i3 8300
882
Geekbench 5 (Multi-Core)
Core i5 8400
+78%
4620
Core i3 8300
2591
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Specifications
Full technical specification of Intel Core i5 8400 and i3 8300
General
| Vendor | Intel | Intel |
| Released | October 5, 2017 | April 3, 2018 |
| Type | Desktop | Desktop |
| instruction set | x86-64 | x86-64 |
| Codename | Coffee Lake | Coffee Lake |
| Model number | i5-8400 | i3-8300 |
| Socket | LGA-1151 | LGA-1151 |
| Integrated GPU | UHD Graphics 630 | UHD Graphics 630 |
Performance
| Cores | 6 | 4 |
| Threads | 6 | 4 |
| Base Frequency | 2. 8 GHz |
3.7 GHz |
| Turbo Boost Frequency | 4 GHz | — |
| Bus frequency | 100 MHz | — |
| Multiplier | 28x | — |
| Bus Bandwidth | 8 GT/s | 8 GT/s |
| L1 Cache | 64K (per core) | — |
| L2 Cache | 256K (per core) | — |
| L3 Cache | 9MB (shared) | 8MB (shared) |
| Unlocked Multiplier | No | — |
| Fabrication process | 14 nm | 14 nm |
| TDP | 65 W | 62 W |
| Max. temperature | 100°C | 100°C |
| Integrated Graphics | Intel UHD Graphics 630 | Intel UHD Graphics 630 |
| GPU Base Clock | 350 MHz | 350 MHz |
| GPU Boost Clock | 1050 MHz | 1150 MHz |
| Shading Units | 192 | 192 |
| TMUs | 24 | 24 |
| ROPs | 3 | 3 |
| Execution Units | 24 | 24 |
| TGP | 15 W | 15 W |
Max. Resolution |
4096×2304 — 60 Hz | 4096×2304 — 60 Hz |
iGPU FLOPS
Core i5 8400
0.38 TFLOPS
Core i3 8300
0.38 TFLOPS
Memory support
| Memory types | DDR4-2666 | DDR4-2400 |
| Memory Size | 128 GB | 64 GB |
| Max. Memory Channels | 2 | 2 |
| Max. Memory Bandwidth | 41.6 GB/s | 37.5 GB/s |
| ECC Support | No | Yes |
| Official site | Intel Core i5 8400 official page | Intel Core i3 8300 official page |
| PCI Express Version | 3.0 | 3.0 |
| PCI Express Lanes | 16 | 16 |
| Extended instructions | SSE4.
|