
Core 2 Duo E6400

Pentium A1020
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. The Core 2 Duo E6400 is positioned at rank 1059 and the Pentium A1020 is on rank 1009, so the Pentium A1020 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core 2 Duo E6400
Performance Per Dollar Pentium A1020
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Duo E6400 | Pentium A1020 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($10) | ⚠️ Higher cost ($86) |
| Longevity | 🛑 Legacy (Conroe (2006−2007) / 65 nm) | 🛑 Legacy (Legacy / 22 nm) |
💎 Value Proposition
| Insight | Core 2 Duo E6400 | Pentium A1020 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+766%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($10) | ⚠️ Higher cost ($86) |
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 2 Duo E6400 and Pentium A1020

Core 2 Duo E6400
The Core 2 Duo E6400 is manufactured by Intel. It was released in 2008-01-01. It is based on the Conroe (2006−2007) architecture. It features 2 cores and 2 threads. Base frequency is 2.13 GHz, with boost up to 2.13 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,175 points. Launch price was $249.

Pentium A1020
The Pentium A1020 is manufactured by Intel. It was released in 2007-01-01. It features 4 cores and 4 threads. Base frequency is 2.41 GHz, with boost up to 2.7 GHz. L3 cache: 2 MB L2 Cache. Built on 22 nm process technology. Socket: FCBGA1170. Thermal design power (TDP): 10 Watt. Memory support: DDR3L-1333. Passmark benchmark score: 1,167 points. Launch price was $69.
Processing Power
The Core 2 Duo E6400 packs 2 cores / 2 threads, while the Pentium A1020 offers 4 cores / 4 threads — the Pentium A1020 has 2 more cores. Boost clocks reach 2.13 GHz on the Core 2 Duo E6400 versus 2.7 GHz on the Pentium A1020 — a 23.6% clock advantage for the Pentium A1020 (base: 2.13 GHz vs 2.41 GHz). The Core 2 Duo E6400 is built on the Conroe (2006−2007) architecture. In PassMark, the Core 2 Duo E6400 scores 1,175 against the Pentium A1020's 1,167 — a 0.7% lead for the Core 2 Duo E6400. L3 cache: 0 kB on the Core 2 Duo E6400 vs 2 MB L2 Cache on the Pentium A1020.
| Feature | Core 2 Duo E6400 | Pentium A1020 |
|---|---|---|
| Cores / Threads | 2 / 2 | 4 / 4+100% |
| Boost Clock | 2.13 GHz | 2.7 GHz+27% |
| Base Clock | 2.13 GHz | 2.41 GHz+13% |
| L3 Cache | 0 kB | 2 MB L2 Cache |
| L2 Cache | 2 MB | — |
| Process | 65 nm | 22 nm-66% |
| Architecture | Conroe (2006−2007) | — |
| PassMark | 1,175 | 1,167 |
Memory & Platform
The Core 2 Duo E6400 uses the LGA775 socket (PCIe 1.1), while the Pentium A1020 uses FCBGA1170 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core 2 Duo E6400 | Pentium A1020 |
|---|---|---|
| Socket | LGA775 | FCBGA1170 |
| PCIe Generation | PCIe 1.1 | PCIe 3.0+173% |
| Max RAM Speed | 1066 | — |
| Max RAM Capacity | 16 | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 16 | — |
Advanced Features
Virtualization: true (Core 2 Duo E6400) / not specified (Pentium A1020). Direct competitor: Core 2 Duo E6400 rivals Athlon 64 X2 5400+.
| Feature | Core 2 Duo E6400 | Pentium A1020 |
|---|---|---|
| Integrated GPU | No | — |
| IGPU Model | None | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | true | — |
Value Analysis
The Core 2 Duo E6400 launched at $183 MSRP, while the Pentium A1020 debuted at $86. At current prices ($10 vs $86), the Core 2 Duo E6400 is $76 cheaper. In terms of value (PassMark points per dollar), the Core 2 Duo E6400 delivers 117.5 pts/$ vs 13.6 pts/$ for the Pentium A1020 — making the Core 2 Duo E6400 the 158.6% better value option.
| Feature | Core 2 Duo E6400 | Pentium A1020 |
|---|---|---|
| MSRP | $183 | $86-53% |
| Avg Price (30d) | $10-88% | $86 |
| Performance per Dollar | 117.5+764% | 13.6 |
| Release Date | 2006 | 2016 |
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