Core 2 Duo E6540 vs Phenom II X2 N640
Core 2 Duo E6540
Phenom II X2 N640
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 E6540 is positioned at rank 1009 and the Phenom II X2 N640 is on rank 977, so the Phenom II X2 N640 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 E6540
Performance Per Dollar Phenom II X2 N640
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Duo E6540 | Phenom II X2 N640 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($15) | ⚠️ Higher cost ($55) |
| Longevity | 🛑 Legacy (Legacy / 65 nm) | 🛑 Legacy (Champlain (2010−2011) / 45 nm) |
💎 Value Proposition
| Insight | Core 2 Duo E6540 | Phenom II X2 N640 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+264%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($15) | ⚠️ Higher cost ($55) |
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 E6540 and Phenom II X2 N640
Core 2 Duo E6540
The Core 2 Duo E6540 is manufactured by Intel. It was released in 2008-01-01. It has 2 cores. Base frequency: 2.33 GHz. L3 cache: 4 MB L2 Cache. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Passmark benchmark score: 1,495 points. Launch price was $249.
Phenom II X2 N640
The Phenom II X2 N640 is manufactured by AMD. It was released in 2009-01-01. It is based on the Champlain (2010−2011) architecture. It features 2 cores and 2 threads. Max frequency: 2.9 GHz. L2 cache: 2 MB. Built on 45 nm process technology. Socket: S1. Thermal design power (TDP): 2 MB. Memory support: DDR3. Passmark benchmark score: 1,505 points. Launch price was $149.
Processing Power
Both the Core 2 Duo E6540 and Phenom II X2 N640 share an identical 2-core/2-thread configuration. The Phenom II X2 N640 is built on the Champlain (2010−2011) architecture. In PassMark, the Core 2 Duo E6540 scores 1,495 against the Phenom II X2 N640's 1,505 — a 0.7% lead for the Phenom II X2 N640.
| Feature | Core 2 Duo E6540 | Phenom II X2 N640 |
|---|---|---|
| Cores / Threads | 2 | 2 / 2 |
| Boost Clock | — | 2.9 GHz |
| Base Clock | 2.33 GHz | — |
| L3 Cache | 4 MB L2 Cache | — |
| L2 Cache | — | 2 MB |
| Process | 65 nm | 45 nm-31% |
| Architecture | — | Champlain (2010−2011) |
| PassMark | 1,495 | 1,505 |
| Geekbench 6 Single | — | 300 |
| Geekbench 6 Multi | — | 422 |
Memory & Platform
The Core 2 Duo E6540 uses the LGA775 socket (PCIe 1.1), while the Phenom II X2 N640 uses S1 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1333 on the Core 2 Duo E6540 versus DDR3-1333 on the Phenom II X2 N640 — the Core 2 Duo E6540 supports 199.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core 2 Duo E6540 supports up to 16 of RAM compared to 8 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: P35,G31,G33,P45 (Core 2 Duo E6540) and RS880M (Phenom II X2 N640).
| Feature | Core 2 Duo E6540 | Phenom II X2 N640 |
|---|---|---|
| Socket | LGA775 | S1 |
| PCIe Generation | PCIe 1.1 | PCIe 2.0+82% |
| Max RAM Speed | 1333+44333% | DDR3-1333 |
| Max RAM Capacity | 16 | 8 GB+52428700% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Neither processor supports overclocking. Virtualization support: true (Core 2 Duo E6540) vs AMD-V (Phenom II X2 N640). Primary use case: Phenom II X2 N640 targets Legacy Laptop. Direct competitor: Core 2 Duo E6540 rivals Athlon 64 X2 6000+.
| Feature | Core 2 Duo E6540 | Phenom II X2 N640 |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | true | AMD-V |
| Target Use | — | Legacy Laptop |
Value Analysis
The Core 2 Duo E6540 launched at $163 MSRP, while the Phenom II X2 N640 debuted at $100. At current prices ($15 vs $55), the Core 2 Duo E6540 is $40 cheaper. In terms of value (PassMark points per dollar), the Core 2 Duo E6540 delivers 99.7 pts/$ vs 27.4 pts/$ for the Phenom II X2 N640 — making the Core 2 Duo E6540 the 113.8% better value option.
| Feature | Core 2 Duo E6540 | Phenom II X2 N640 |
|---|---|---|
| MSRP | $163 | $100-39% |
| Avg Price (30d) | $15-73% | $55 |
| Performance per Dollar | 99.7+264% | 27.4 |
| Release Date | 2007 | 2010 |
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