Core i5-12400F vs Athlon 64 FX-55
Core i5-12400F
Athlon 64 FX-55
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.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i5-12400F
Performance Per Dollar Athlon 64 FX-55
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i5-12400F | Athlon 64 FX-55 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($110) | ✅ More affordable ($50) |
| Longevity | ✨ Modern (Alder Lake-S (2022) / Intel 7 nm) | 🛑 Legacy (Clawhammer (2001−2005) / 130 nm) |
💎 Value Proposition
| Insight | Core i5-12400F | Athlon 64 FX-55 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+1187%) | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($110) | ✅ More affordable ($50) |
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 i5-12400F and Athlon 64 FX-55
Core i5-12400F
The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.
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.
Processing Power
The Core i5-12400F packs 6 cores / 12 threads, while the Athlon 64 FX-55 offers 1 cores / 1 threads — the Core i5-12400F has 5 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 2.6 GHz on the Athlon 64 FX-55 — a 51.4% clock advantage for the Core i5-12400F (base: 2.5 GHz vs 2.6 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Athlon 64 FX-55 uses Clawhammer (2001−2005) (130 nm). In PassMark, the Core i5-12400F scores 19,532 against the Athlon 64 FX-55's 690 — a 186.4% lead for the Core i5-12400F. L3 cache: 18 MB (total) on the Core i5-12400F vs 0 kB on the Athlon 64 FX-55.
| Feature | Core i5-12400F | Athlon 64 FX-55 |
|---|---|---|
| Cores / Threads | 6 / 12+500% | 1 / 1 |
| Boost Clock | 4.4 GHz+69% | 2.6 GHz |
| Base Clock | 2.5 GHz | 2.6 GHz+4% |
| L3 Cache | 18 MB (total) | 0 kB |
| L2 Cache | 1.25 MB (per core)+25% | 1 MB |
| Process | Intel 7 nm-95% | 130 nm |
| Architecture | Alder Lake-S (2022) | Clawhammer (2001−2005) |
| PassMark | 19,532+2731% | 690 |
| Cinebench R23 Multi | 12,380 | — |
| Geekbench 6 Single | 1,700 | — |
| Geekbench 6 Multi | 657 | — |
Memory & Platform
The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Athlon 64 FX-55 uses 939 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400F versus DDR1-400 on the Athlon 64 FX-55 — the Core i5-12400F supports 133.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-12400F supports up to 128 GB of RAM compared to 4 GB — 187.9% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-12400F) vs 0 (Athlon 64 FX-55) — the Core i5-12400F offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F) and nForce3,nForce4,Xpress 200 (Athlon 64 FX-55).
| Feature | Core i5-12400F | Athlon 64 FX-55 |
|---|---|---|
| Socket | LGA1700 | 939 |
| PCIe Generation | PCIe 3.0+173% | PCIe 1.1 |
| Max RAM Speed | DDR5-4800, DDR4-3200+400% | DDR1-400 |
| Max RAM Capacity | 128 GB+3100% | 4 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 20 | 0 |
Advanced Features
Virtualization: VT-x, VT-d, EPT (Core i5-12400F) / not specified (Athlon 64 FX-55). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.
| Feature | Core i5-12400F | Athlon 64 FX-55 |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | VT-x, VT-d, EPT | — |
| Target Use | Gaming Performance/Value | — |
Value Analysis
The Core i5-12400F launched at $174 MSRP, while the Athlon 64 FX-55 debuted at $827. At current prices ($110 vs $50), the Athlon 64 FX-55 is $60 cheaper. In terms of value (PassMark points per dollar), the Core i5-12400F delivers 177.6 pts/$ vs 13.8 pts/$ for the Athlon 64 FX-55 — making the Core i5-12400F the 171.2% better value option.
| Feature | Core i5-12400F | Athlon 64 FX-55 |
|---|---|---|
| MSRP | $174-79% | $827 |
| Avg Price (30d) | $110 | $50-55% |
| Performance per Dollar | 177.6+1187% | 13.8 |
| Release Date | 2022 | 2004 |
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