Athlon 64 FX-51 vs Core i7-12700K
Athlon 64 FX-51
Core i7-12700K
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. The Athlon 64 FX-51 is positioned at rank #1133 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. 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 Athlon 64 FX-51
Performance Per Dollar Core i7-12700K
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon 64 FX-51 | Core i7-12700K |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($733) | ✅ More affordable ($285) |
| Longevity | 🛑 Legacy (SledgeHammer (2003−2005) / 130 nm) | ✨ Modern (Alder Lake, Golden Cove, Gracemont (2021) / 10 nm) |
💎 Value Proposition
| Insight | Athlon 64 FX-51 | Core i7-12700K |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+14264%) |
| Upfront Cost | ⚠️ Higher cost ($733) | ✅ More affordable ($285) |
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 Core i7-12700K
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.
Core i7-12700K
The Core i7-12700K is manufactured by Intel. It was released in 4 November 2021 (4 years ago). It is based on the Alder Lake, Golden Cove, Gracemont (2021) architecture. It features 12 cores and 20 threads. Base frequency is 3.6 GHz, with boost up to 5 GHz. L3 cache: 25 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: LGA1700. Thermal design power (TDP): 125 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 34,347 points. Launch price was $409.
Processing Power
The Athlon 64 FX-51 packs 1 cores / 1 threads, while the Core i7-12700K offers 12 cores / 20 threads — the Core i7-12700K has 11 more cores. Boost clocks reach 2.2 GHz on the Athlon 64 FX-51 versus 5 GHz on the Core i7-12700K — a 77.8% clock advantage for the Core i7-12700K. The Athlon 64 FX-51 uses the SledgeHammer (2003−2005) architecture (130 nm), while the Core i7-12700K uses Alder Lake, Golden Cove, Gracemont (2021) (10 nm). In PassMark, the Athlon 64 FX-51 scores 615 against the Core i7-12700K's 34,347 — a 193% lead for the Core i7-12700K. L3 cache: 0 kB on the Athlon 64 FX-51 vs 25 MB (total) on the Core i7-12700K.
| Feature | Athlon 64 FX-51 | Core i7-12700K |
|---|---|---|
| Cores / Threads | 1 / 1 | 12 / 20+1100% |
| Boost Clock | 2.2 GHz | 5 GHz+127% |
| Base Clock | — | 3.6 GHz |
| L3 Cache | 0 kB | 25 MB (total) |
| L2 Cache | 1 MB | 1.25 MB (per core)+25% |
| Process | 130 nm | 10 nm-92% |
| Architecture | SledgeHammer (2003−2005) | Alder Lake, Golden Cove, Gracemont (2021) |
| PassMark | 615 | 34,347+5485% |
Memory & Platform
The Athlon 64 FX-51 uses the 940 socket (PCIe 1.1), while the Core i7-12700K uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR-400 on the Athlon 64 FX-51 versus 4800 on the Core i7-12700K — the Core i7-12700K supports 236.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-12700K supports up to 128 of RAM compared to 4 GB — 187.9% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Athlon 64 FX-51) vs 20 (Core i7-12700K) — the Core i7-12700K offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD 940 (Athlon 64 FX-51) and Z690,B660 (Core i7-12700K).
| Feature | Athlon 64 FX-51 | Core i7-12700K |
|---|---|---|
| Socket | 940 | LGA1700 |
| PCIe Generation | PCIe 1.1 | PCIe 5.0+355% |
| Max RAM Speed | DDR-400 | 4800 |
| Max RAM Capacity | 4 GB+3276700% | 128 |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 0 | 20 |
Advanced Features
Virtualization: not specified (Athlon 64 FX-51) / VT-x, VT-d (Core i7-12700K). The Core i7-12700K includes integrated graphics (Intel UHD Graphics 770), while the Athlon 64 FX-51 requires a dedicated GPU. Direct competitor: Core i7-12700K rivals Ryzen 7 5800X.
| Feature | Athlon 64 FX-51 | Core i7-12700K |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Intel UHD Graphics 770 |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
Value Analysis
The Athlon 64 FX-51 launched at $733 MSRP, while the Core i7-12700K debuted at $409. At current prices ($733 vs $285), the Core i7-12700K is $448 cheaper. In terms of value (PassMark points per dollar), the Athlon 64 FX-51 delivers 0.8 pts/$ vs 120.5 pts/$ for the Core i7-12700K — making the Core i7-12700K the 197.2% better value option.
| Feature | Athlon 64 FX-51 | Core i7-12700K |
|---|---|---|
| MSRP | $733 | $409-44% |
| Avg Price (30d) | $733 | $285-61% |
| Performance per Dollar | 0.8 | 120.5+14963% |
| Release Date | 2003 | 2021 |
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