Phenom II X4 840T vs Core 2 Duo T6600
Phenom II X4 840T
Core 2 Duo T6600
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 Phenom II X4 840T is positioned at rank 265 and the Core 2 Duo T6600 is on rank 13, so the Core 2 Duo T6600 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Phenom II X4 840T
Performance Per Dollar Core 2 Duo T6600
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Phenom II X4 840T | Core 2 Duo T6600 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($4) |
| Longevity | 🛑 Legacy (Zosma (2010−2011) / 45 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Phenom II X4 840T | Core 2 Duo T6600 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($4) |
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 Phenom II X4 840T and Core 2 Duo T6600
Phenom II X4 840T
The Phenom II X4 840T is manufactured by AMD. It was released in 1 September 2010 (15 years ago). It is based on the Zosma (2010−2011) architecture. It features 4 cores and 4 threads. Base frequency is 2.9 GHz, with boost up to 3.2 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 2,367 points. Launch price was $80.
Core 2 Duo T6600
The Core 2 Duo T6600 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: 2,355 points. Launch price was $249.
Processing Power
The Phenom II X4 840T packs 4 cores / 4 threads, while the Core 2 Duo T6600 offers 2 cores / 2 threads — the Phenom II X4 840T has 2 more cores. Boost clocks reach 3.2 GHz on the Phenom II X4 840T versus 2.2 GHz on the Core 2 Duo T6600 — a 37% clock advantage for the Phenom II X4 840T (base: 2.9 GHz vs 2.2 GHz). The Phenom II X4 840T uses the Zosma (2010−2011) architecture (45 nm), while the Core 2 Duo T6600 uses Penryn (2008−2011) (45 nm). In PassMark, the Phenom II X4 840T scores 2,367 against the Core 2 Duo T6600's 2,355 — a 0.5% lead for the Phenom II X4 840T. L3 cache: 6 MB (total) on the Phenom II X4 840T vs 2 MB L2 Cache on the Core 2 Duo T6600.
| Feature | Phenom II X4 840T | Core 2 Duo T6600 |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 2 |
| Boost Clock | 3.2 GHz+45% | 2.2 GHz |
| Base Clock | 2.9 GHz+32% | 2.2 GHz |
| L3 Cache | 6 MB (total)+200% | 2 MB L2 Cache |
| L2 Cache | 512 kB (per core) | 2 MB+300% |
| Process | 45 nm | 45 nm |
| Architecture | Zosma (2010−2011) | Penryn (2008−2011) |
| PassMark | 2,367 | 2,355 |
| Geekbench 6 Single | — | 200 |
| Geekbench 6 Multi | — | 350 |
Memory & Platform
The Phenom II X4 840T uses the AM3 socket (PCIe 2.0), while the Core 2 Duo T6600 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Phenom II X4 840T | Core 2 Duo T6600 |
|---|---|---|
| Socket | AM3 | PGA478 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | — | DDR3-800 |
| Max RAM Capacity | — | 8 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 0 |
Advanced Features
Virtualization: not specified (Phenom II X4 840T) / VT-x (Core 2 Duo T6600). Primary use case: Core 2 Duo T6600 targets Legacy Laptop.
| Feature | Phenom II X4 840T | Core 2 Duo T6600 |
|---|---|---|
| Integrated GPU | — | No |
| IGPU Model | — | None |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x |
| Target Use | — | Legacy Laptop |
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