Intel Core i7-9800X vs Intel Core i5-8400
Summary
Intel Core i7-9800X
143%
Intel Core i5-8400
100%
Relative performance
Intel Core i7-9800X
109%
Intel Core i5-8400
100%
Relative performance
Intel Core i7-9800X
178%
Intel Core i5-8400
100%
Relative performance
Reasons to consider Intel Core i7-9800X |
| 9% higher single threaded performance. |
| Much higher multi threaded performance (around 78% higher). This allows for higher performance in professional applications like encoding or heavy multitasking. |
| Around 43% higher average synthetic performance. |
Reasons to consider Intel Core i5-8400 |
| 100 watts lower power draw. |
| Has an integrated GPU, which allows to run the system without a dedicated graphics card, unlike the Intel Core i7-9800X. |
Gaming
HWBench recommends Intel Core i7-9800X
Based on game and synthetic benchmarks, and theoretical specifications.
Productivity
HWBench recommends Intel Core i7-9800X
Based on productivity benchmarks, overall multithreaded performance and theoretical specifications.
Features
| Intel Core i7-9800X | | Intel Core i5-8400 | |
|---|
| MMX | | | |
| SSE | | | |
| SSE2 | | | |
| SSE3 | | | |
| SSSE3 | | | |
| SSE4.2 | | | |
| AVX | | | |
| AVX2 | | | |
| EIST | | | |
| Intel 64 | | | |
| XD bit | | | |
| VT-x | | | |
| VT-d | | | |
| HTT | | | |
| AES-NI | | | |
| TSX | | | |
| TXT | | | |
| CLMUL | | | |
| FMA3 | | | |
| F16C | | | |
| BMI1 | | | |
| BMI2 | | | |
| Boost 2.0 | | | |
| Boost 3.0 | | | |
Architecture
| Intel Core i7-9800X | | Intel Core i5-8400 | |
|---|
| Architecture | Intel_Skylake | vs | Intel_Coffelake |
| Market | Desktop | vs | Desktop |
| Memory Support | DDR4 | vs | DDR4 |
| Codename | Skylake-X | vs | Coffee Lake |
| Release Date | Oct 2018 | vs | Jan 2018 |
Cores
| Intel Core i7-9800X | | Intel Core i5-8400 | |
|---|
| Cores | 8 | vs | 6 |
| Threads | 16 | vs | 6 |
| SMPs | 1 | vs | 1 |
| Integrated Graphics | No | vs | Intel UHD 630 |
Cache
| Intel Core i7-9800X | | Intel Core i5-8400 | |
|---|
| L1 Cache | 64K (per core) | vs | 64 KB (per core) |
| L2 Cache | 1MB (per core) | vs | 256 KB (per core) |
| L3 Cache | 16.5MB (shared) | vs | 9216 KB (shared) |
Physical
| Intel Core i7-9800X | | Intel Core i5-8400 | |
|---|
| Socket | Intel Socket 2066 | vs | Intel Socket 1151 |
| Max Case Temp | 72°C | vs | 72°C |
| Package | FC-LGA2066 | vs | FC-LGA1151 |
| Die Size | unknown | vs | 151mm² |
| Process | 14 nm | vs | 14 nm |
Performance
| Intel Core i7-9800X | | Intel Core i5-8400 | |
|---|
| Cpu Frequency | 3800 MHz | vs | 2800 MHz |
| Turbo Clock | 4400 MHz | vs | 4000 MHz |
| Base Clock | 100 MHz | vs | 100 MHz |
| Voltage | unknown | vs | unknown |
| TDP | 165 W | vs | 65 W |
Intel Core i7-9800X
5060 points
Intel Core i5-8400
4800 points
Points - higher is better
Intel Core i7-9800X
42301 points
Intel Core i5-8400
20160 points
Points - higher is better
points - higher is better
points - higher is better