Athlon 64 FX-55 vs Pentium D 915
Athlon 64 FX-55
Pentium D 915
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 Pentium D 915 is on rank 1002, so the Pentium D 915 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 Pentium D 915
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon 64 FX-55 | Pentium D 915 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($50) | ✅ More affordable ($10) |
| Longevity | 🛑 Legacy (Clawhammer (2001−2005) / 130 nm) | 🛑 Legacy (NetBurst (2000−2006) / 65 nm) |
💎 Value Proposition
| Insight | Athlon 64 FX-55 | Pentium D 915 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+411%) |
| Upfront Cost | ⚠️ Higher cost ($50) | ✅ More affordable ($10) |
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-55 and Pentium D 915
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.
Pentium D 915
The Pentium D 915 is manufactured by Intel. It was released in 23 July 2006 (19 years ago). It is based on the NetBurst (2000−2006) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 2 MB (total). Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 705 points. Launch price was $74.
Processing Power
The Athlon 64 FX-55 packs 1 cores / 1 threads, while the Pentium D 915 offers 2 cores / 2 threads — the Pentium D 915 has 1 more core. Boost clocks reach 2.6 GHz on the Athlon 64 FX-55 versus 2.8 GHz on the Pentium D 915 — a 7.4% clock advantage for the Pentium D 915 (base: 2.6 GHz vs 2.8 GHz). The Athlon 64 FX-55 uses the Clawhammer (2001−2005) architecture (130 nm), while the Pentium D 915 uses NetBurst (2000−2006) (65 nm). In PassMark, the Athlon 64 FX-55 scores 690 against the Pentium D 915's 705 — a 2.2% lead for the Pentium D 915. Both processors carry 0 kB of L3 cache.
| Feature | Athlon 64 FX-55 | Pentium D 915 |
|---|---|---|
| Cores / Threads | 1 / 1 | 2 / 2+100% |
| Boost Clock | 2.6 GHz | 2.8 GHz+8% |
| Base Clock | 2.6 GHz | 2.8 GHz+8% |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 1 MB | 2 MB (total)+100% |
| Process | 130 nm | 65 nm-50% |
| Architecture | Clawhammer (2001−2005) | NetBurst (2000−2006) |
| PassMark | 690 | 705+2% |
Memory & Platform
The Athlon 64 FX-55 uses the 939 socket (PCIe 1.1), while the Pentium D 915 uses LGA775 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Athlon 64 FX-55 | Pentium D 915 |
|---|---|---|
| Socket | 939 | LGA775 |
| PCIe Generation | PCIe 1.1 | PCIe 1.1 |
| Max RAM Speed | DDR1-400 | — |
| Max RAM Capacity | 4 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 0 | — |
Value Analysis
The Athlon 64 FX-55 launched at $827 MSRP, while the Pentium D 915 debuted at $74. At current prices ($50 vs $10), the Pentium D 915 is $40 cheaper. In terms of value (PassMark points per dollar), the Athlon 64 FX-55 delivers 13.8 pts/$ vs 70.5 pts/$ for the Pentium D 915 — making the Pentium D 915 the 134.5% better value option.
| Feature | Athlon 64 FX-55 | Pentium D 915 |
|---|---|---|
| MSRP | $827 | $74-91% |
| Avg Price (30d) | $50 | $10-80% |
| Performance per Dollar | 13.8 | 70.5+411% |
| Release Date | 2004 | 2006 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Athlon 64 FX-55 and Pentium D 915
