CPU
GPU
Core i9-9820X
Core i7-12700K
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 i9-9820X
Performance Per Dollar Core i7-12700K
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i9-9820X | Core i7-12700K |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($280) | ⚠️ Higher cost ($285) |
| Longevity | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) | ✨ Modern (Alder Lake, Golden Cove, Gracemont (2021) / 10 nm) |
💎 Value Proposition
| Insight | Core i9-9820X | Core i7-12700K |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+65%) |
| Upfront Cost | ✅ More affordable ($280) | ⚠️ Higher cost ($285) |
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 i9-9820X and Core i7-12700K
Core i9-9820X
The Core i9-9820X 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 3.3 GHz, with boost up to 4.2 GHz. L3 cache: 16.5 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: 20,456 points. Launch price was $898.
Core i7-12700K
The Core i7-12700K is manufactured by Intel. It was released in 4 November 2021 (4 years ago). It is based on the Alder Lake, Golden Cove, Gracemont (2021) architecture. It features 12 cores and 20 threads. Base frequency is 3.6 GHz, with boost up to 5 GHz. L3 cache: 25 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: LGA1700. Thermal design power (TDP): 125 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 34,347 points. Launch price was $409.
Processing Power
The Core i9-9820X packs 10 cores / 20 threads, while the Core i7-12700K offers 12 cores / 20 threads — the Core i7-12700K has 2 more cores. Boost clocks reach 4.2 GHz on the Core i9-9820X versus 5 GHz on the Core i7-12700K — a 17.4% clock advantage for the Core i7-12700K (base: 3.3 GHz vs 3.6 GHz). The Core i9-9820X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Core i7-12700K uses Alder Lake, Golden Cove, Gracemont (2021) (10 nm). In PassMark, the Core i9-9820X scores 20,456 against the Core i7-12700K's 34,347 — a 50.7% lead for the Core i7-12700K. L3 cache: 16.5 MB (total) on the Core i9-9820X vs 25 MB (total) on the Core i7-12700K.
| Feature | Core i9-9820X | Core i7-12700K |
|---|---|---|
| Cores / Threads | 10 / 20 | 12 / 20+20% |
| Boost Clock | 4.2 GHz | 5 GHz+19% |
| Base Clock | 3.3 GHz | 3.6 GHz+9% |
| L3 Cache | 16.5 MB (total) | 25 MB (total)+52% |
| L2 Cache | 1 MB (per core) | 1.25 MB (per core)+25% |
| Process | 14 nm | 10 nm-29% |
| Architecture | Skylake (server) (2017−2018) | Alder Lake, Golden Cove, Gracemont (2021) |
| PassMark | 20,456 | 34,347+68% |
| Geekbench 6 Single | 1,394 | — |
| Geekbench 6 Multi | 9,361 | — |
Memory & Platform
The Core i9-9820X uses the LGA2066 socket (PCIe 3.0), while the Core i7-12700K uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4 2666 MHz on the Core i9-9820X versus 4800 on the Core i7-12700K — the Core i9-9820X supports 159.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Memory channels: 4 (Core i9-9820X) vs 2 (Core i7-12700K). PCIe lanes: 44 (Core i9-9820X) vs 20 (Core i7-12700K) — the Core i9-9820X offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel X299 (Core i9-9820X) and Z690,B660 (Core i7-12700K).
| Feature | Core i9-9820X | Core i7-12700K |
|---|---|---|
| Socket | LGA2066 | LGA1700 |
| PCIe Generation | PCIe 3.0 | PCIe 5.0+67% |
| Max RAM Speed | DDR4 2666 MHz | 4800+119900% |
| Max RAM Capacity | 128 GB+104857500% | 128 |
| RAM Channels | 4+100% | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 44+120% | 20 |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Only the Core i9-9820X supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: true (Core i9-9820X) vs VT-x, VT-d (Core i7-12700K). The Core i7-12700K includes integrated graphics (Intel UHD Graphics 770), while the Core i9-9820X requires a dedicated GPU. Primary use case: Core i9-9820X targets Workstation. Direct competitor: Core i7-12700K rivals Ryzen 7 5800X.
| Feature | Core i9-9820X | Core i7-12700K |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Intel UHD Graphics 770 |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | No |
| Virtualization | true | VT-x, VT-d |
| Target Use | Workstation | — |
Value Analysis
The Core i9-9820X launched at $889 MSRP, while the Core i7-12700K debuted at $409. At current prices ($280 vs $285), the Core i9-9820X is $5 cheaper. In terms of value (PassMark points per dollar), the Core i9-9820X delivers 73.1 pts/$ vs 120.5 pts/$ for the Core i7-12700K — making the Core i7-12700K the 49% better value option.
| Feature | Core i9-9820X | Core i7-12700K |
|---|---|---|
| MSRP | $889 | $409-54% |
| Avg Price (30d) | $280-2% | $285 |
| Performance per Dollar | 73.1 | 120.5+65% |
| Release Date | 2018 | 2021 |
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