Processor comparison
Intel Core i9-9900KS vs Intel Core i7-8700K
Intel
Intel Core i9-9900KS
Intel Socket 1151
4000 MHz
8 cores
Oct 2019
DESKTOP
VS
Intel
Intel Core i7-8700K
Intel Socket 1151
3700 MHz
6 cores
Oct 2017
DESKTOP
Summary
Synthetic performance index
- Intel Core i9-9900KS135%
- Intel Core i7-8700K100%
Relative performance
Single thread performance index
- Intel Core i9-9900KS106%
- Intel Core i7-8700K100%
Relative performance
Multi thread performance index
- Intel Core i9-9900KS163%
- Intel Core i7-8700K100%
Relative performance
Reasons to consider the Intel Core i9-9900KS
- 6% higher single threaded performance.
- Much higher multi threaded performance (around 63% higher). This allows for higher performance in professional applications like encoding or heavy multitasking.
- This is a newer product, it might have better application compatibility/performance (check features chart below).
- Around 35% higher average synthetic performance.
Reasons to consider the Intel Core i7-8700K
Gaming
HWSpot recommends the Intel Core i9-9900KS
Based on game and synthetic benchmarks, and theoretical specifications.
Productivity
HWSpot recommends the Intel Core i9-9900KS
Based on productivity benchmarks, overall multithreaded performance and theoretical specifications.
Specifications
Features
| Intel Core i9-9900KS | Intel Core i7-8700K |
|---|
| 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 | | |
Architecture
| Intel Core i9-9900KS | Intel Core i7-8700K |
|---|
| Architecture | Intel_Coffelake | Intel_Coffelake |
| Market | Desktop | Desktop |
| Memory Support | DDR4-2666 MHz
Dual-channel | DDR4 |
| Codename | Coffee Lake-R | Coffee Lake |
| Release Date | Oct 2019 | Oct 2017 |
Cores
| Intel Core i9-9900KS | Intel Core i7-8700K |
|---|
| Cores | 8 | 6 |
| Threads | 16 | 12 |
| SMPs | 1 | 1 |
| Integrated Graphics | UHD 630 | Intel UHD 630 |
Cache
| Intel Core i9-9900KS | Intel Core i7-8700K |
|---|
| L1 Cache | 64K (per core) | 64 KB (per core) |
| L2 Cache | 256K (per core) | 256 KB (per core) |
| L3 Cache | 16MB (shared) | 12288 KB (shared) |
Physical
| Intel Core i9-9900KS | Intel Core i7-8700K |
|---|
| Socket | Intel Socket 1151 | Intel Socket 1151 |
| Max Case Temp | 72°C | 72°C |
| Package | FC-LGA14C | FC-LGA1151 |
| Die Size | 180mm² | 151mm² |
| Process | 14 nm | 14 nm |
Performance
| Intel Core i9-9900KS | Intel Core i7-8700K |
|---|
| Cpu Frequency | 4000 MHz | 3700 MHz |
| Turbo Clock | 5000 MHz | 4700 MHz |
| Base Clock | 100 MHz | 100 MHz |
| Voltage | N/A | unknown |
| TDP | 127 W | 95 W |
Raw performance index
Raw single-thread performance estimation
- Intel Core i9-9900KS6000 points
- Intel Core i7-8700K5640 points
Points - higher is better
Raw multi-thread performance estimation
- Intel Core i9-9900KS46080 points
- Intel Core i7-8700K31968 points
Points - higher is better
Synthetic benchmarks
Cinebench R15 CPU Single 64Bit
- Intel Core i9-9900KS216
- Intel Core i7-8700K202
points - higher is better
Cinebench R15 CPU Multi 64Bit
- Intel Core i9-9900KS (simulated)2307.78
- Intel Core i7-8700K1412
points - higher is better