Core 2 Duo T6400 vs A6-3650
Core 2 Duo T6400
A6-3650
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 T6400 is positioned at rank 49 and the A6-3650 is on rank 832, so the Core 2 Duo T6400 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 T6400
Performance Per Dollar A6-3650
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Duo T6400 | A6-3650 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($20) |
| Longevity | 🛑 Legacy (Penryn (2008−2011) / 45 nm) | 🛑 Legacy (Llano (2011−2012) / 32 nm) |
💎 Value Proposition
| Insight | Core 2 Duo T6400 | A6-3650 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($20) |
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 T6400 and A6-3650
Core 2 Duo T6400
The Core 2 Duo T6400 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 GHz, with boost up to 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: 2,115 points. Launch price was $249.
A6-3650
The A6-3650 is manufactured by AMD. It was released in 2014-01-01. It is based on the Llano (2011−2012) architecture. It features 4 cores and 4 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 32 nm process technology. Socket: FM1. Thermal design power (TDP): 100 Watt. Memory support: DDR3. Passmark benchmark score: 2,098 points. Launch price was $70.
Processing Power
The Core 2 Duo T6400 packs 2 cores / 2 threads, while the A6-3650 offers 4 cores / 4 threads — the A6-3650 has 2 more cores. Boost clocks reach 2 GHz on the Core 2 Duo T6400 versus 2.6 GHz on the A6-3650 — a 26.1% clock advantage for the A6-3650 (base: 2 GHz vs 2.6 GHz). The Core 2 Duo T6400 uses the Penryn (2008−2011) architecture (45 nm), while the A6-3650 uses Llano (2011−2012) (32 nm). In PassMark, the Core 2 Duo T6400 scores 2,115 against the A6-3650's 2,098 — a 0.8% lead for the Core 2 Duo T6400. Geekbench 6 single-core — the metric most relevant to gaming — records 650 vs 311, a 70.6% lead for the Core 2 Duo T6400 that directly translates to higher frame rates. L3 cache: 2 MB L2 Cache on the Core 2 Duo T6400 vs 0 kB on the A6-3650.
| Feature | Core 2 Duo T6400 | A6-3650 |
|---|---|---|
| Cores / Threads | 2 / 2 | 4 / 4+100% |
| Boost Clock | 2 GHz | 2.6 GHz+30% |
| Base Clock | 2 GHz | 2.6 GHz+30% |
| L3 Cache | 2 MB L2 Cache | 0 kB |
| L2 Cache | 2 MB+100% | 1 MB (per core) |
| Process | 45 nm | 32 nm-29% |
| Architecture | Penryn (2008−2011) | Llano (2011−2012) |
| PassMark | 2,115 | 2,098 |
| Geekbench 6 Single | 650+109% | 311 |
| Geekbench 6 Multi | 1,300 | — |
Memory & Platform
The Core 2 Duo T6400 uses the PGA478 socket (PCIe 1.1), while the A6-3650 uses FM1 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-800 on the Core 2 Duo T6400 versus DDR3-1866 on the A6-3650 — the A6-3650 supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The A6-3650 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. PCIe lanes: 0 (Core 2 Duo T6400) vs 16 (A6-3650) — the A6-3650 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel GM45,Intel PM45 (Core 2 Duo T6400) and A55,A75 (A6-3650).
| Feature | Core 2 Duo T6400 | A6-3650 |
|---|---|---|
| Socket | PGA478 | FM1 |
| PCIe Generation | PCIe 1.1 | PCIe 2.0+82% |
| Max RAM Speed | DDR2-800 | DDR3-1866+50% |
| Max RAM Capacity | 8 GB | 16 GB+100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 16 |
Advanced Features
Neither processor supports overclocking. Virtualization support: No (Core 2 Duo T6400) vs AMD-V (A6-3650). The A6-3650 includes integrated graphics (Radeon HD 6530D), while the Core 2 Duo T6400 requires a dedicated GPU. Primary use case: Core 2 Duo T6400 targets Mobile, A6-3650 targets Budget Desktop. Direct competitor: A6-3650 rivals Pentium G850.
| Feature | Core 2 Duo T6400 | A6-3650 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Radeon HD 6530D |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | No | AMD-V |
| Target Use | Mobile | Budget Desktop |
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