Athlon II X4 635 vs Core 2 Duo T6500
Athlon II X4 635
Core 2 Duo T6500
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 Athlon II X4 635 is positioned at rank 1069 and the Core 2 Duo T6500 is on rank 178, so the Core 2 Duo T6500 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon II X4 635
Performance Per Dollar Core 2 Duo T6500
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II X4 635 | Core 2 Duo T6500 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($250) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Propus (2009−2011) / 45 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Athlon II X4 635 | Core 2 Duo T6500 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($250) | ✅ More affordable ($0) |
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 Athlon II X4 635 and Core 2 Duo T6500
Athlon II X4 635
The Athlon II X4 635 is manufactured by AMD. It was released in 25 January 2010 (15 years ago). It is based on the Propus (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 2.9 GHz, with boost up to 2.9 GHz. L3 cache: 0 kB. 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: 2,248 points. Launch price was $70.
Core 2 Duo T6500
The Core 2 Duo T6500 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 2.1 GHz, with boost up to 2.1 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: 2,249 points. Launch price was $249.
Processing Power
The Athlon II X4 635 packs 4 cores / 4 threads, while the Core 2 Duo T6500 offers 2 cores / 2 threads — the Athlon II X4 635 has 2 more cores. Boost clocks reach 2.9 GHz on the Athlon II X4 635 versus 2.1 GHz on the Core 2 Duo T6500 — a 32% clock advantage for the Athlon II X4 635 (base: 2.9 GHz vs 2.1 GHz). The Athlon II X4 635 uses the Propus (2009−2011) architecture (45 nm), while the Core 2 Duo T6500 uses Penryn (2008−2011) (45 nm). In PassMark, the Athlon II X4 635 scores 2,248 against the Core 2 Duo T6500's 2,249 — a 0% lead for the Core 2 Duo T6500. L3 cache: 0 kB on the Athlon II X4 635 vs 2 MB L2 Cache on the Core 2 Duo T6500.
| Feature | Athlon II X4 635 | Core 2 Duo T6500 |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 2 |
| Boost Clock | 2.9 GHz+38% | 2.1 GHz |
| Base Clock | 2.9 GHz+38% | 2.1 GHz |
| L3 Cache | 0 kB | 2 MB L2 Cache |
| L2 Cache | 512 kB (per core) | 2 MB+300% |
| Process | 45 nm | 45 nm |
| Architecture | Propus (2009−2011) | Penryn (2008−2011) |
| PassMark | 2,248 | 2,249 |
| Cinebench R23 Multi | 658 | — |
| Geekbench 6 Single | 180 | — |
| Geekbench 6 Multi | 550 | — |
Memory & Platform
The Athlon II X4 635 uses the AM3 socket (PCIe 2.0), while the Core 2 Duo T6500 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 / DDR2-1066 on the Athlon II X4 635 versus DDR2-800 on the Core 2 Duo T6500 — the Athlon II X4 635 supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Athlon II X4 635 supports up to 16 GB 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: AMD 770,785G,790FX,880G,890FX,970,990FX (Athlon II X4 635) and PM45 (Core 2 Duo T6500).
| Feature | Athlon II X4 635 | Core 2 Duo T6500 |
|---|---|---|
| Socket | AM3 | PGA478 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | DDR3-1333 / DDR2-1066+50% | DDR2-800 |
| Max RAM Capacity | 16 GB+100% | 8 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Only the Athlon II X4 635 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: AMD-V (Athlon II X4 635) vs false (Core 2 Duo T6500). Primary use case: Athlon II X4 635 targets Budget.
| Feature | Athlon II X4 635 | Core 2 Duo T6500 |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | Yes | No |
| AVX-512 | No | No |
| Virtualization | AMD-V | false |
| Target Use | Budget | — |
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