Athlon 64 FX-51 vs Mobile Athlon 64 3700+
Athlon 64 FX-51
Mobile Athlon 64 3700+
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 64 FX-51 is positioned at rank 1133 and the Mobile Athlon 64 3700+ is on rank 321, so the Mobile Athlon 64 3700+ offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon 64 FX-51
Performance Per Dollar Mobile Athlon 64 3700+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon 64 FX-51 | Mobile Athlon 64 3700+ |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($733) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (SledgeHammer (2003−2005) / 130 nm) | 🛑 Legacy (Clawhammer (2001−2005) / Standard Node) |
💎 Value Proposition
| Insight | Athlon 64 FX-51 | Mobile Athlon 64 3700+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($733) | ✅ 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 64 FX-51 and Mobile Athlon 64 3700+
Athlon 64 FX-51
The Athlon 64 FX-51 is manufactured by AMD. It was released in 2009-01-01. It is based on the SledgeHammer (2003−2005) architecture. It features 1 cores and 1 threads. Max frequency: 2.2 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 130 nm process technology. Socket: 940. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 615 points. Launch price was $149.
Mobile Athlon 64 3700+
The Mobile Athlon 64 3700+ is manufactured by AMD. It was released in Agosto 2005 (20 years ago). It is based on the Clawhammer (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 2.4 GHz. L2 cache: 1 MB. Socket: 754. Thermal design power (TDP): 1 MB. Memory support: DDR1. Passmark benchmark score: 622 points. Launch price was $69.
Processing Power
Both the Athlon 64 FX-51 and Mobile Athlon 64 3700+ share an identical 1-core/1-thread configuration. Boost clocks reach 2.2 GHz on the Athlon 64 FX-51 versus 2.4 GHz on the Mobile Athlon 64 3700+ — a 8.7% clock advantage for the Mobile Athlon 64 3700+. The Athlon 64 FX-51 uses the SledgeHammer (2003−2005) architecture (130 nm), while the Mobile Athlon 64 3700+ uses Clawhammer (2001−2005). In PassMark, the Athlon 64 FX-51 scores 615 against the Mobile Athlon 64 3700+'s 622 — a 1.1% lead for the Mobile Athlon 64 3700+.
| Feature | Athlon 64 FX-51 | Mobile Athlon 64 3700+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2.2 GHz | 2.4 GHz+9% |
| L3 Cache | 0 kB | — |
| L2 Cache | 1 MB | 1 MB |
| Process | 130 nm | — |
| Architecture | SledgeHammer (2003−2005) | Clawhammer (2001−2005) |
| PassMark | 615 | 622+1% |
Memory & Platform
The Athlon 64 FX-51 uses the 940 socket (PCIe 1.1), while the Mobile Athlon 64 3700+ uses 754 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR-400 on the Athlon 64 FX-51 versus 400 on the Mobile Athlon 64 3700+ — the Mobile Athlon 64 3700+ supports 100+% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Athlon 64 FX-51 supports up to 4 GB of RAM compared to 2 — 66.7% more capacity for professional workloads. Memory channels: 2 (Athlon 64 FX-51) vs 1 (Mobile Athlon 64 3700+). Both provide 0 PCIe lanes. Chipset compatibility: AMD 940 (Athlon 64 FX-51) and 754 (Mobile Athlon 64 3700+).
| Feature | Athlon 64 FX-51 | Mobile Athlon 64 3700+ |
|---|---|---|
| Socket | 940 | 754 |
| PCIe Generation | PCIe 1.1 | PCIe 1.1 |
| Max RAM Speed | DDR-400 | 400 |
| Max RAM Capacity | 4 GB+209715100% | 2 |
| RAM Channels | 2+100% | 1 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 0 | 0 |
Advanced Features
Virtualization: not specified (Athlon 64 FX-51) / false (Mobile Athlon 64 3700+). Direct competitor: Mobile Athlon 64 3700+ rivals Pentium M 735.
| Feature | Athlon 64 FX-51 | Mobile Athlon 64 3700+ |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | — | None |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | false |
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