
Core 2 Duo T6670

Xeon E5440
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 T6670 is positioned at rank 474 and the Xeon E5440 is on rank 1008, so the Core 2 Duo T6670 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 T6670
Performance Per Dollar Xeon E5440
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Duo T6670 | Xeon E5440 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($37) |
| Longevity | 🛑 Legacy (Penryn (2008−2011) / 45 nm) | 🛑 Legacy (Harpertown (2007−2008) / 45 nm) |
💎 Value Proposition
| Insight | Core 2 Duo T6670 | Xeon E5440 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($37) |
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 T6670 and Xeon E5440

Core 2 Duo T6670
The Core 2 Duo T6670 is manufactured by Intel. It was released in 2008-01-01. It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.2 GHz, with boost up to 2.2 GHz. L3 cache: 2 MB L2 Cache. L2 cache: 2 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 2,365 points. Launch price was $249.

Xeon E5440
The Xeon E5440 is manufactured by Intel. It was released in 11 November 2007 (18 years ago). It is based on the Harpertown (2007−2008) architecture. It features 4 cores and 4 threads. Base frequency is 2.83 GHz, with boost up to 0.83 GHz. L3 cache: 12 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 80 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 2,367 points. Launch price was $690.
Processing Power
The Core 2 Duo T6670 packs 2 cores / 2 threads, while the Xeon E5440 offers 4 cores / 4 threads — the Xeon E5440 has 2 more cores. Boost clocks reach 2.2 GHz on the Core 2 Duo T6670 versus 0.83 GHz on the Xeon E5440 — a 90.4% clock advantage for the Core 2 Duo T6670 (base: 2.2 GHz vs 2.83 GHz). The Core 2 Duo T6670 uses the Penryn (2008−2011) architecture (45 nm), while the Xeon E5440 uses Harpertown (2007−2008) (45 nm). In PassMark, the Core 2 Duo T6670 scores 2,365 against the Xeon E5440's 2,367 — a 0.1% lead for the Xeon E5440. L3 cache: 2 MB L2 Cache on the Core 2 Duo T6670 vs 12 MB L2 Cache on the Xeon E5440.
| Feature | Core 2 Duo T6670 | Xeon E5440 |
|---|---|---|
| Cores / Threads | 2 / 2 | 4 / 4+100% |
| Boost Clock | 2.2 GHz+165% | 0.83 GHz |
| Base Clock | 2.2 GHz | 2.83 GHz+29% |
| L3 Cache | 2 MB L2 Cache | 12 MB L2 Cache+500% |
| L2 Cache | 2 MB | 6 MB (total)+200% |
| Process | 45 nm | 45 nm |
| Architecture | Penryn (2008−2011) | Harpertown (2007−2008) |
| PassMark | 2,365 | 2,367 |
| Geekbench 6 Single | 252 | — |
| Geekbench 6 Multi | 252 | — |
Memory & Platform
The Core 2 Duo T6670 uses the PGA478 socket (PCIe 1.1), while the Xeon E5440 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Core 2 Duo T6670 | Xeon E5440 |
|---|---|---|
| Socket | PGA478 | LGA771 |
| PCIe Generation | PCIe 1.1 | PCIe 2.0+82% |
| Max RAM Speed | DDR3-1066 | — |
| Max RAM Capacity | 8 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 0 | — |
Advanced Features
Virtualization: VT-x (Core 2 Duo T6670) / not specified (Xeon E5440). Primary use case: Core 2 Duo T6670 targets Budget. Direct competitor: Core 2 Duo T6670 rivals Core 2 Duo T6600.
| Feature | Core 2 Duo T6670 | Xeon E5440 |
|---|---|---|
| Integrated GPU | No | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x | — |
| Target Use | Budget | — |
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