Core i9-9900X vs Core i7-11700B
Core i9-9900X
Core i7-11700B
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 i9-9900X
Performance Per Dollar Core i7-11700B
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i9-9900X | Core i7-11700B |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($300) | ⚠️ Higher cost ($311) |
| Longevity | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) | ✨ Modern (Tiger Lake-H (2021) / 10 nm SuperFin) |
💎 Value Proposition
| Insight | Core i9-9900X | Core i7-11700B |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+4%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($300) | ⚠️ Higher cost ($311) |
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 i9-9900X and Core i7-11700B
Core i9-9900X
The Core i9-9900X is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 10 cores and 20 threads. Base frequency is 3.5 GHz, with boost up to 4.5 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2666. Passmark benchmark score: 21,655 points. Launch price was $989.
Core i7-11700B
The Core i7-11700B is manufactured by Intel. It was released in 11 May 2021 (4 years ago). It is based on the Tiger Lake-H (2021) architecture. It features 8 cores and 16 threads. Base frequency is 3.2 GHz, with boost up to 4.8 GHz. L3 cache: 24 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm SuperFin process technology. Socket: FCBGA1787. Thermal design power (TDP): 65 Watt. Memory support: Up to 3200 MT/s. Passmark benchmark score: 21,581 points. Launch price was $299.
Processing Power
The Core i9-9900X packs 10 cores / 20 threads, while the Core i7-11700B offers 8 cores / 16 threads — the Core i9-9900X has 2 more cores. Boost clocks reach 4.5 GHz on the Core i9-9900X versus 4.8 GHz on the Core i7-11700B — a 6.5% clock advantage for the Core i7-11700B (base: 3.5 GHz vs 3.2 GHz). The Core i9-9900X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Core i7-11700B uses Tiger Lake-H (2021) (10 nm SuperFin). In PassMark, the Core i9-9900X scores 21,655 against the Core i7-11700B's 21,581 — a 0.3% lead for the Core i9-9900X. Cinebench R23 multi-core: 13,985 vs 10,287 (30.5% advantage for the Core i9-9900X). Geekbench 6 single-core — the metric most relevant to gaming — records 1,459 vs 2,265, a 43.3% lead for the Core i7-11700B that directly translates to higher frame rates. Multi-core Geekbench: 9,475 vs 10,050 (5.9% advantage for the Core i7-11700B). L3 cache: 19.25 MB (total) on the Core i9-9900X vs 24 MB (total) on the Core i7-11700B.
| Feature | Core i9-9900X | Core i7-11700B |
|---|---|---|
| Cores / Threads | 10 / 20+25% | 8 / 16 |
| Boost Clock | 4.5 GHz | 4.8 GHz+7% |
| Base Clock | 3.5 GHz+9% | 3.2 GHz |
| L3 Cache | 19.25 MB (total) | 24 MB (total)+25% |
| L2 Cache | 1 MB (per core) | 1.25 MB (per core)+25% |
| Process | 14 nm | 10 nm SuperFin-29% |
| Architecture | Skylake (server) (2017−2018) | Tiger Lake-H (2021) |
| PassMark | 21,655 | 21,581 |
| Cinebench R23 Multi | 13,985+36% | 10,287 |
| Geekbench 6 Single | 1,459 | 2,265+55% |
| Geekbench 6 Multi | 9,475 | 10,050+6% |
Memory & Platform
The Core i9-9900X uses the LGA2066 socket (PCIe 3.0), while the Core i7-11700B uses FCBGA1787 (PCIe 4.0) — making them incompatible on the same motherboard. Both support up to DDR4-2666 memory speed. Both support up to 128 GB of RAM. Memory channels: 4 (Core i9-9900X) vs 2 (Core i7-11700B). PCIe lanes: 44 (Core i9-9900X) vs 20 (Core i7-11700B) — the Core i9-9900X offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X299 (Core i9-9900X) and HM570,QM580,WM590 (Core i7-11700B).
| Feature | Core i9-9900X | Core i7-11700B |
|---|---|---|
| Socket | LGA2066 | FCBGA1787 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | DDR4-2666 | DDR4-3200 |
| Max RAM Capacity | 128 GB | 128 GB |
| RAM Channels | 4+100% | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 44+120% | 20 |
Advanced Features
Only the Core i9-9900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Both support VT-x, VT-d virtualization. The Core i7-11700B includes integrated graphics (Intel UHD Graphics 750), while the Core i9-9900X requires a dedicated GPU. Primary use case: Core i7-11700B targets Desktop.
| Feature | Core i9-9900X | Core i7-11700B |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Intel UHD Graphics 750 |
| Unlocked | Yes | No |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d | VT-x, VT-d |
| Target Use | — | Desktop |
Value Analysis
The Core i9-9900X launched at $989 MSRP, while the Core i7-11700B debuted at $323. At current prices ($300 vs $311), the Core i9-9900X is $11 cheaper. In terms of value (PassMark points per dollar), the Core i9-9900X delivers 72.2 pts/$ vs 69.4 pts/$ for the Core i7-11700B — making the Core i9-9900X the 3.9% better value option.
| Feature | Core i9-9900X | Core i7-11700B |
|---|---|---|
| MSRP | $989 | $323-67% |
| Avg Price (30d) | $300-4% | $311 |
| Performance per Dollar | 72.2+4% | 69.4 |
| Release Date | 2018 | 2021 |
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