CPU
GPU
Athlon 64 FX-55
Athlon 64 4000+
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-55 is positioned at rank 1134 and the Athlon 64 4000+ is on rank 1112, so the Athlon 64 4000+ 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-55
Performance Per Dollar Athlon 64 4000+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon 64 FX-55 | Athlon 64 4000+ |
|---|---|---|
| Gaming | Balanced gaming performance | Balanced gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($50) | ✅ More affordable ($30) |
| Longevity | 🛑 Legacy (Clawhammer (2001−2005) / 130 nm) | 🛑 Legacy (San Diego (2001−2005) / 130 nm) |
💎 Value Proposition
| Insight | Athlon 64 FX-55 | Athlon 64 4000+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+63%) |
| Upfront Cost | ⚠️ Higher cost ($50) | ✅ More affordable ($30) |
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.
Valorant
Technical Specifications
Side-by-side comparison of Athlon 64 FX-55 and Athlon 64 4000+
Athlon 64 FX-55
The Athlon 64 FX-55 is manufactured by AMD. It was released in 10 October 2004 (21 years ago). It is based on the Clawhammer (2001−2005) architecture. It features 1 cores and 1 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 130 nm process technology. Socket: 939. Thermal design power (TDP): 104 Watt. Memory support: DDR1 Depends on motherboard. Passmark benchmark score: 690 points. Launch price was $180.
Athlon 64 4000+
The Athlon 64 4000+ 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: 2.6 GHz. L3 cache: 0 kB. L2 cache: 512K. Built on 130 nm process technology. Socket: 939. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 675 points. Launch price was $160.
Processing Power
Both the Athlon 64 FX-55 and Athlon 64 4000+ share an identical 1-core/1-thread configuration. Boost clocks reach 2.6 GHz on the Athlon 64 FX-55 versus 2.6 GHz on the Athlon 64 4000+ — identical boost frequencies. The Athlon 64 FX-55 uses the Clawhammer (2001−2005) architecture (130 nm), while the Athlon 64 4000+ uses San Diego (2001−2005) (130 nm). In PassMark, the Athlon 64 FX-55 scores 690 against the Athlon 64 4000+'s 675 — a 2.2% lead for the Athlon 64 FX-55. Both processors carry 0 kB of L3 cache.
| Feature | Athlon 64 FX-55 | Athlon 64 4000+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2.6 GHz | 2.6 GHz |
| Base Clock | 2.6 GHz | — |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 1 MB+100% | 512K |
| Process | 130 nm | 130 nm |
| Architecture | Clawhammer (2001−2005) | San Diego (2001−2005) |
| PassMark | 690+2% | 675 |
Memory & Platform
Both processors use the 939 socket with PCIe 1.1. Maximum memory speed reaches DDR1-400 on the Athlon 64 FX-55 versus DDR2-800 on the Athlon 64 4000+ — the Athlon 64 4000+ supports 66.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Athlon 64 4000+ supports up to 16 GB of RAM compared to 4 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: nForce3,nForce4,Xpress 200 (Athlon 64 FX-55) and AMD AM2 (Athlon 64 4000+).
| Feature | Athlon 64 FX-55 | Athlon 64 4000+ |
|---|---|---|
| Socket | 939 | 939 |
| PCIe Generation | PCIe 1.1 | PCIe 1.1 |
| Max RAM Speed | DDR1-400 | DDR2-800+100% |
| Max RAM Capacity | 4 GB | 16 GB+300% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 0 |
Value Analysis
The Athlon 64 FX-55 launched at $827 MSRP, while the Athlon 64 4000+ debuted at $482. At current prices ($50 vs $30), the Athlon 64 4000+ is $20 cheaper. In terms of value (PassMark points per dollar), the Athlon 64 FX-55 delivers 13.8 pts/$ vs 22.5 pts/$ for the Athlon 64 4000+ — making the Athlon 64 4000+ the 47.9% better value option.
| Feature | Athlon 64 FX-55 | Athlon 64 4000+ |
|---|---|---|
| MSRP | $827 | $482-42% |
| Avg Price (30d) | $50 | $30-40% |
| Performance per Dollar | 13.8 | 22.5+63% |
| Release Date | 2004 | 2001 |
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