CPU
GPU
Athlon 64 FX-51
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 Athlon 64 3700+ is on rank 1099, so the 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 Athlon 64 3700+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon 64 FX-51 | 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 ($20) |
| Longevity | 🛑 Legacy (SledgeHammer (2003−2005) / 130 nm) | 🛑 Legacy (San Diego (2001−2005) / 130 nm) |
💎 Value Proposition
| Insight | Athlon 64 FX-51 | Athlon 64 3700+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+3607%) |
| Upfront Cost | ⚠️ Higher cost ($733) | ✅ More affordable ($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 Athlon 64 FX-51 and 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.
Athlon 64 3700+
The Athlon 64 3700+ is manufactured by AMD. It was released in Janeiro 2001 (24 years ago). It is based on the San Diego (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 2.4 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 130 nm process technology. Socket: 939. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 622 points. Launch price was $69.
Processing Power
Both the Athlon 64 FX-51 and 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 Athlon 64 3700+ — a 8.7% clock advantage for the Athlon 64 3700+. The Athlon 64 FX-51 uses the SledgeHammer (2003−2005) architecture (130 nm), while the Athlon 64 3700+ uses San Diego (2001−2005) (130 nm). In PassMark, the Athlon 64 FX-51 scores 615 against the Athlon 64 3700+'s 622 — a 1.1% lead for the Athlon 64 3700+. Both processors carry 0 kB of L3 cache.
| Feature | Athlon 64 FX-51 | Athlon 64 3700+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2.2 GHz | 2.4 GHz+9% |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 1 MB | 1 MB |
| Process | 130 nm | 130 nm |
| Architecture | SledgeHammer (2003−2005) | San Diego (2001−2005) |
| PassMark | 615 | 622+1% |
Memory & Platform
The Athlon 64 FX-51 uses the 940 socket (PCIe 1.1), while the Athlon 64 3700+ uses 939 (PCIe 1.1) — making them incompatible on the same motherboard. Both support up to DDR-400 memory speed. Both support up to 4 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: AMD 940 (Athlon 64 FX-51) and AMD 939 (Athlon 64 3700+).
| Feature | Athlon 64 FX-51 | Athlon 64 3700+ |
|---|---|---|
| Socket | 940 | 939 |
| PCIe Generation | PCIe 1.1 | PCIe 1.1 |
| Max RAM Speed | DDR-400 | DDR-400 |
| Max RAM Capacity | 4 GB | 4 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 0 | 0 |
Value Analysis
The Athlon 64 FX-51 launched at $733 MSRP, while the Athlon 64 3700+ debuted at $272. At current prices ($733 vs $20), the Athlon 64 3700+ is $713 cheaper. In terms of value (PassMark points per dollar), the Athlon 64 FX-51 delivers 0.8 pts/$ vs 31.1 pts/$ for the Athlon 64 3700+ — making the Athlon 64 3700+ the 189.5% better value option.
| Feature | Athlon 64 FX-51 | Athlon 64 3700+ |
|---|---|---|
| MSRP | $733 | $272-63% |
| Avg Price (30d) | $733 | $20-97% |
| Performance per Dollar | 0.8 | 31.1+3788% |
| Release Date | 2003 | 2001 |
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