Pentium III 1266S vs Ryzen 7 7800X3D
Pentium III 1266S
Popular choices:
Ryzen 7 7800X3D
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 Pentium III 1266S is positioned at rank #1140 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 Pentium III 1266S
Performance Per Dollar Ryzen 7 7800X3D
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium III 1266S | Ryzen 7 7800X3D |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($20) | ⚠️ Higher cost ($384) |
| Longevity | 🛑 Legacy (Tualatin (2000−2002) / 130 nm) | ✨ Modern (Raphael (Zen4) (2022−2023) / 5 nm) |
💎 Value Proposition
| Insight | Pentium III 1266S | Ryzen 7 7800X3D |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+751%) |
| Upfront Cost | ✅ More affordable ($20) | ⚠️ Higher cost ($384) |
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 Pentium III 1266S and Ryzen 7 7800X3D
Pentium III 1266S
The Pentium III 1266S is manufactured by Intel. It was released in 2007-01-01. It is based on the Tualatin (2000−2002) architecture. It features 1 cores and 1 threads. Max frequency: 1.27 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA370. Thermal design power (TDP): 30 Watt. Passmark benchmark score: 210 points. Launch price was $69.
Ryzen 7 7800X3D
The Ryzen 7 7800X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 8 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5 GHz. L3 cache: 96 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 34,293 points. Launch price was $449.
Processing Power
The Pentium III 1266S packs 1 cores / 1 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 7 more cores. Boost clocks reach 1.27 GHz on the Pentium III 1266S versus 5 GHz on the Ryzen 7 7800X3D — a 119% clock advantage for the Ryzen 7 7800X3D. The Pentium III 1266S uses the Tualatin (2000−2002) architecture (130 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Pentium III 1266S scores 210 against the Ryzen 7 7800X3D's 34,293 — a 197.6% lead for the Ryzen 7 7800X3D. L3 cache: 0 kB on the Pentium III 1266S vs 96 MB (total) on the Ryzen 7 7800X3D.
| Feature | Pentium III 1266S | Ryzen 7 7800X3D |
|---|---|---|
| Cores / Threads | 1 / 1 | 8 / 16+700% |
| Boost Clock | 1.27 GHz | 5 GHz+294% |
| Base Clock | — | 4.4 GHz |
| L3 Cache | 0 kB | 96 MB (total) |
| L2 Cache | 512 kB | 1 MB (per core)+100% |
| Process | 130 nm | 5 nm-96% |
| Architecture | Tualatin (2000−2002) | Raphael (Zen4) (2022−2023) |
| PassMark | 210 | 34,293+16230% |
| Cinebench R23 Multi | — | 18,500 |
| Geekbench 6 Single | — | 2,700 |
| Geekbench 6 Multi | — | 15,000 |
Memory & Platform
The Pentium III 1266S uses the PGA370 socket (PCIe 1.1), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard.
| Feature | Pentium III 1266S | Ryzen 7 7800X3D |
|---|---|---|
| Socket | PGA370 | AM5 |
| PCIe Generation | PCIe 1.1 | PCIe 5.0+355% |
| Max RAM Speed | — | DDR5-5200 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 28 |
Advanced Features
Virtualization: not specified (Pentium III 1266S) / AMD-V (Ryzen 7 7800X3D). The Ryzen 7 7800X3D includes integrated graphics (AMD Radeon Graphics (2-core)), while the Pentium III 1266S requires a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K.
| Feature | Pentium III 1266S | Ryzen 7 7800X3D |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | AMD Radeon Graphics (2-core) |
| Unlocked | — | Yes |
| AVX-512 | — | Yes |
| Virtualization | — | AMD-V |
| Target Use | — | Gaming |
Value Analysis
The Pentium III 1266S launched at $369 MSRP, while the Ryzen 7 7800X3D debuted at $449. At current prices ($20 vs $384), the Pentium III 1266S is $364 cheaper. In terms of value (PassMark points per dollar), the Pentium III 1266S delivers 10.5 pts/$ vs 89.3 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 157.9% better value option.
| Feature | Pentium III 1266S | Ryzen 7 7800X3D |
|---|---|---|
| MSRP | $369-18% | $449 |
| Avg Price (30d) | $20-95% | $384 |
| Performance per Dollar | 10.5 | 89.3+750% |
| Release Date | 2001 | 2023 |
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