Core i7-7820X vs Core i5-10400F
Core i7-7820X
Core i5-10400F
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 i7-7820X
Performance Per Dollar Core i5-10400F
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-7820X | Core i5-10400F |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($198) | ✅ More affordable ($102) |
| Longevity | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) | ✨ Modern (Comet Lake (2020−2025) / 14 nm) |
💎 Value Proposition
| Insight | Core i7-7820X | Core i5-10400F |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+47%) |
| Upfront Cost | ⚠️ Higher cost ($198) | ✅ More affordable ($102) |
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 i7-7820X and Core i5-10400F
Core i7-7820X
The Core i7-7820X is manufactured by Intel. It was released in 26 June 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 8 cores and 16 threads. Base frequency is 3.6 GHz, with boost up to 4.5 GHz. L3 cache: 11 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 140 Watt. Memory support: DDR4-2666. Passmark benchmark score: 17,171 points. Launch price was $599.
Core i5-10400F
The Core i5-10400F is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 13,029 points. Launch price was $155.
Processing Power
The Core i7-7820X packs 8 cores / 16 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i7-7820X has 2 more cores. Boost clocks reach 4.5 GHz on the Core i7-7820X versus 4.3 GHz on the Core i5-10400F — a 4.5% clock advantage for the Core i7-7820X (base: 3.6 GHz vs 2.9 GHz). The Core i7-7820X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core i7-7820X scores 17,171 against the Core i5-10400F's 13,029 — a 27.4% lead for the Core i7-7820X. L3 cache: 11 MB (total) on the Core i7-7820X vs 12 MB (total) on the Core i5-10400F.
| Feature | Core i7-7820X | Core i5-10400F |
|---|---|---|
| Cores / Threads | 8 / 16+33% | 6 / 12 |
| Boost Clock | 4.5 GHz+5% | 4.3 GHz |
| Base Clock | 3.6 GHz+24% | 2.9 GHz |
| L3 Cache | 11 MB (total) | 12 MB (total)+9% |
| L2 Cache | 1 MB (per core)+300% | 256K (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Skylake (server) (2017−2018) | Comet Lake (2020−2025) |
| PassMark | 17,171+32% | 13,029 |
| Cinebench R23 Multi | — | 8,191 |
| Geekbench 6 Single | — | 1,454 |
| Geekbench 6 Multi | — | 5,783 |
Memory & Platform
The Core i7-7820X uses the LGA2066 socket (PCIe 3.0), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i7-7820X | Core i5-10400F |
|---|---|---|
| Socket | LGA2066 | LGA1200 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | — | DDR4-2666 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Core i7-7820X) / VT-x, VT-d (Core i5-10400F). Primary use case: Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.
| Feature | Core i7-7820X | Core i5-10400F |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Gaming |
Value Analysis
The Core i7-7820X launched at $599 MSRP, while the Core i5-10400F debuted at $160. At current prices ($198 vs $102), the Core i5-10400F is $96 cheaper. In terms of value (PassMark points per dollar), the Core i7-7820X delivers 86.7 pts/$ vs 127.7 pts/$ for the Core i5-10400F — making the Core i5-10400F the 38.2% better value option.
| Feature | Core i7-7820X | Core i5-10400F |
|---|---|---|
| MSRP | $599 | $160-73% |
| Avg Price (30d) | $198 | $102-48% |
| Performance per Dollar | 86.7 | 127.7+47% |
| Release Date | 2017 | 2020 |
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