Pentium D 820 vs Core i5-10400F
Pentium D 820
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. The Pentium D 820 is positioned at rank #1065 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. 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 Pentium D 820
Performance Per Dollar Core i5-10400F
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium D 820 | Core i5-10400F |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($20) | ⚠️ Higher cost ($102) |
| Longevity | 🛑 Legacy (NetBurst (2000−2006) / 90 nm) | ✨ Modern (Comet Lake (2020−2025) / 14 nm) |
💎 Value Proposition
| Insight | Pentium D 820 | Core i5-10400F |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+81%) |
| Upfront Cost | ✅ More affordable ($20) | ⚠️ Higher cost ($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 Pentium D 820 and Core i5-10400F
Pentium D 820
The Pentium D 820 is manufactured by Intel. It was released in 2007-01-01. It is based on the NetBurst (2000−2006) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 90 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,412 points. Launch price was $69.
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 Pentium D 820 packs 2 cores / 2 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i5-10400F has 4 more cores. Boost clocks reach 2.8 GHz on the Pentium D 820 versus 4.3 GHz on the Core i5-10400F — a 42.3% clock advantage for the Core i5-10400F (base: 2.8 GHz vs 2.9 GHz). The Pentium D 820 uses the NetBurst (2000−2006) architecture (90 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Pentium D 820 scores 1,412 against the Core i5-10400F's 13,029 — a 160.9% lead for the Core i5-10400F. Geekbench 6 single-core — the metric most relevant to gaming — records 166 vs 1,454, a 159% lead for the Core i5-10400F that directly translates to higher frame rates. L3 cache: 0 kB on the Pentium D 820 vs 12 MB (total) on the Core i5-10400F.
| Feature | Pentium D 820 | Core i5-10400F |
|---|---|---|
| Cores / Threads | 2 / 2 | 6 / 12+200% |
| Boost Clock | 2.8 GHz | 4.3 GHz+54% |
| Base Clock | 2.8 GHz | 2.9 GHz+4% |
| L3 Cache | 0 kB | 12 MB (total) |
| L2 Cache | 2 MB+700% | 256K (per core) |
| Process | 90 nm | 14 nm-84% |
| Architecture | NetBurst (2000−2006) | Comet Lake (2020−2025) |
| PassMark | 1,412 | 13,029+823% |
| Cinebench R23 Multi | — | 8,191 |
| Geekbench 6 Single | 166 | 1,454+776% |
| Geekbench 6 Multi | — | 5,783 |
Memory & Platform
The Pentium D 820 uses the LGA775 socket (PCIe 1.1), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-667 on the Pentium D 820 versus DDR4-2666 on the Core i5-10400F — the Core i5-10400F supports 66.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-10400F supports up to 128 GB of RAM compared to 4 GB — 187.9% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Pentium D 820) vs 16 (Core i5-10400F) — the Core i5-10400F offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel 945,Intel 955 (Pentium D 820) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).
| Feature | Pentium D 820 | Core i5-10400F |
|---|---|---|
| Socket | LGA775 | LGA1200 |
| PCIe Generation | PCIe 1.1 | PCIe 3.0+173% |
| Max RAM Speed | DDR2-667 | DDR4-2666+100% |
| Max RAM Capacity | 4 GB | 128 GB+3100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 16 |
Advanced Features
Virtualization support: No (Pentium D 820) vs 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 | Pentium D 820 | Core i5-10400F |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | — | No |
| AVX-512 | No | No |
| Virtualization | No | VT-x, VT-d |
| Target Use | — | Gaming |
Value Analysis
The Pentium D 820 launched at $241 MSRP, while the Core i5-10400F debuted at $160. At current prices ($20 vs $102), the Pentium D 820 is $82 cheaper. In terms of value (PassMark points per dollar), the Pentium D 820 delivers 70.6 pts/$ vs 127.7 pts/$ for the Core i5-10400F — making the Core i5-10400F the 57.6% better value option.
| Feature | Pentium D 820 | Core i5-10400F |
|---|---|---|
| MSRP | $241 | $160-34% |
| Avg Price (30d) | $20-80% | $102 |
| Performance per Dollar | 70.6 | 127.7+81% |
| Release Date | 2005 | 2020 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Pentium D 820 and Core i5-10400F
