AMD Ryzen 7 7800X3D vs Intel Core i5-8400
69Single-core31.1
57.9Multi-core28.6
90.6Gaming27.2
18 spec wins — AMD Ryzen 7 7800X3D2 spec wins — Intel Core i5-8400
InnoReviews verdict
AMD Ryzen 7 7800X3D wins this desktop processor face-off, 69.4 to 29, pulling ahead mainly in gaming (+63) and Single-core (+38). Intel Core i5-8400 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 7 7800X3D
- Stronger Single-core score: 69 vs 31
- Stronger Multi-core score: 58 vs 29
- Stronger gaming score: 91 vs 27
- 967% higher L3 cache: 96 MB vs 9 MB
- 433% higher L2 cache: 8 MB vs 2 MB
Reasons to pick the Intel Core i5-8400
- 46% lower Base TDP: 65 W vs 120 W
- Has Cooler included — the other doesn't
- Lower launch price: $182 vs $449
General
| Spec | AMD Ryzen 7 7800X3D | Intel Core i5-8400 |
|---|---|---|
| Announced | 2023 | 2017 |
| Socket | AM5 | LGA1151-v2 |
| Process | 5 nm+64% | 14 nm |
| Base TDP | 120 W | 65 W+46% |
| Max turbo power | 162 W | — |
| Unlocked multiplier | No | No |
| Cooler included | No | Yes |
Cores & Clocks
| Spec | AMD Ryzen 7 7800X3D | Intel Core i5-8400 |
|---|---|---|
| Cores | 8+33% | 6 |
| Performance cores | 8+33% | 6 |
| Efficiency cores | 0 | 0 |
| Threads | 16+167% | 6 |
| Base clock | 4.2 GHz+50% | 2.8 GHz |
| Boost clock | 5 GHz+25% | 4 GHz |
| L2 cache | 8 MB+433% | 2 MB |
| L3 cache | 96 MB+967% | 9 MB |
Integrated GPU
| Spec | AMD Ryzen 7 7800X3D | Intel Core i5-8400 |
|---|---|---|
| iGPU | AMD Radeon Graphics (2 CU RDNA 2) | Intel UHD Graphics 630 |
| iGPU clock | 2,200 MHz+110% | 1,050 MHz |
Memory
| Spec | AMD Ryzen 7 7800X3D | Intel Core i5-8400 |
|---|---|---|
| Memory support | DDR5-5200 | DDR4-2666 |
| Max memory | 128 GB+100% | 64 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 7 7800X3D | Intel Core i5-8400 |
|---|---|---|
| PCIe version | 5+67% | 3 |
| CPU PCIe lanes | 28+75% | 16 |
Benchmarks
| Spec | AMD Ryzen 7 7800X3D | Intel Core i5-8400 |
|---|---|---|
| Geekbench 6 (single) | 2,650+93%Top 20% | 1,370Top 75% |
| Geekbench 6 (multi) | 15,000+206%Top 20% | 4,900Top 78% |
| Cinebench R23 (single) | 1,810+57%Top 28% | 1,150Top 75% |
| Cinebench R23 (multi) | 17,800+178%Top 27% | 6,400Top 77% |
| PassMark | 34,500+275%Top 23% | 9,200Top 80% |
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