Core i7-8700B vs Core i7-9700K
Core i7-8700B
Core i7-9700K
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-8700B
Performance Per Dollar Core i7-9700K
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-8700B | Core i7-9700K |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($139) | ⚠️ Higher cost ($200) |
| Longevity | ✨ Modern (Coffee Lake (2017−2019) / 14 nm) | ✨ Modern (Coffee Lake-R (2018−2019) / 14 nm) |
💎 Value Proposition
| Insight | Core i7-8700B | Core i7-9700K |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+18%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($139) | ⚠️ Higher cost ($200) |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of Core i7-8700B and Core i7-9700K
Core i7-8700B
The Core i7-8700B is manufactured by Intel. It was released in 3 April 2018 (7 years ago). It is based on the Coffee Lake (2017−2019) architecture. It features 6 cores and 12 threads. Base frequency is 3.2 GHz, with boost up to 4.6 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1440. Thermal design power (TDP): 65 Watt. Memory support: DDR4-2666. Passmark benchmark score: 11,795 points. Launch price was $303.
Core i7-9700K
The Core i7-9700K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4.9 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4. Passmark benchmark score: 14,397 points. Launch price was $374.
Processing Power
The Core i7-8700B packs 6 cores / 12 threads, while the Core i7-9700K offers 8 cores / 8 threads — the Core i7-9700K has 2 more cores. Boost clocks reach 4.6 GHz on the Core i7-8700B versus 4.9 GHz on the Core i7-9700K — a 6.3% clock advantage for the Core i7-9700K (base: 3.2 GHz vs 3.6 GHz). The Core i7-8700B uses the Coffee Lake (2017−2019) architecture (14 nm), while the Core i7-9700K uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Core i7-8700B scores 11,795 against the Core i7-9700K's 14,397 — a 19.9% lead for the Core i7-9700K. Both processors carry 12 MB (total) of L3 cache.
| Feature | Core i7-8700B | Core i7-9700K |
|---|---|---|
| Cores / Threads | 6 / 12 | 8 / 8+33% |
| Boost Clock | 4.6 GHz | 4.9 GHz+7% |
| Base Clock | 3.2 GHz | 3.6 GHz+12% |
| L3 Cache | 12 MB (total) | 12 MB (total) |
| L2 Cache | 256K (per core) | 256K (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Coffee Lake (2017−2019) | Coffee Lake-R (2018−2019) |
| PassMark | 11,795 | 14,397+22% |
Memory & Platform
The Core i7-8700B uses the BGA1440 socket (PCIe 3.0), while the Core i7-9700K uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-2666 memory speed. The Core i7-9700K supports up to 128 GB of RAM compared to 64 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes.
| Feature | Core i7-8700B | Core i7-9700K |
|---|---|---|
| Socket | BGA1440 | LGA1151 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2666 | DDR4-2666 |
| Max RAM Capacity | 64 GB | 128 GB+100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Only the Core i7-9700K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support VT-x, VT-d virtualization. Both include integrated graphics — UHD Graphics 630 (Core i7-8700B) and UHD Graphics 630 (Core i7-9700K) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-8700B targets Mobile, Core i7-9700K targets Desktop.
| Feature | Core i7-8700B | Core i7-9700K |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | UHD Graphics 630 | UHD Graphics 630 |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | VT-x, VT-d | VT-x, VT-d |
| Target Use | Mobile | Desktop |
Value Analysis
The Core i7-8700B launched at $303 MSRP, while the Core i7-9700K debuted at $385. At current prices ($139 vs $200), the Core i7-8700B is $61 cheaper. In terms of value (PassMark points per dollar), the Core i7-8700B delivers 84.9 pts/$ vs 72.0 pts/$ for the Core i7-9700K — making the Core i7-8700B the 16.4% better value option.
| Feature | Core i7-8700B | Core i7-9700K |
|---|---|---|
| MSRP | $303-21% | $385 |
| Avg Price (30d) | $139-31% | $200 |
| Performance per Dollar | 84.9+18% | 72.0 |
| Release Date | 2018 | 2018 |
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