Pentium III 1400S vs Athlon XP 1800+
Pentium III 1400S
Athlon XP 1800+
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 Pentium III 1400S is positioned at rank 1128 and the Athlon XP 1800+ is on rank 1131, so the Pentium III 1400S offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Pentium III 1400S
Performance Per Dollar Athlon XP 1800+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium III 1400S | Athlon XP 1800+ |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($250) | ✅ More affordable ($30) |
| Longevity | 🛑 Legacy (Tualatin (2000−2002) / 130 nm) | 🛑 Legacy (Thoroughbred (2001−2002) / 180 nm) |
💎 Value Proposition
| Insight | Pentium III 1400S | Athlon XP 1800+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+722%) |
| Upfront Cost | ⚠️ Higher cost ($250) | ✅ 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.
Technical Specifications
Side-by-side comparison of Pentium III 1400S and Athlon XP 1800+
Pentium III 1400S
The Pentium III 1400S 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: 1.4 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA370. Thermal design power (TDP): 32 Watt. Passmark benchmark score: 228 points. Launch price was $69.
Athlon XP 1800+
The Athlon XP 1800+ is manufactured by AMD. It was released in Janeiro 2001 (24 years ago). It is based on the Thoroughbred (2001−2002) architecture. It features 1 cores and 1 threads. Max frequency: 1.53 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 180 nm process technology. Socket: A. Thermal design power (TDP): 66 Watt. Passmark benchmark score: 225 points. Launch price was $59.
Processing Power
Both the Pentium III 1400S and Athlon XP 1800+ share an identical 1-core/1-thread configuration. Boost clocks reach 1.4 GHz on the Pentium III 1400S versus 1.53 GHz on the Athlon XP 1800+ — a 8.9% clock advantage for the Athlon XP 1800+. The Pentium III 1400S uses the Tualatin (2000−2002) architecture (130 nm), while the Athlon XP 1800+ uses Thoroughbred (2001−2002) (180 nm). In PassMark, the Pentium III 1400S scores 228 against the Athlon XP 1800+'s 225 — a 1.3% lead for the Pentium III 1400S. Both processors carry 0 kB of L3 cache.
| Feature | Pentium III 1400S | Athlon XP 1800+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 1.4 GHz | 1.53 GHz+9% |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512 kB+100% | 256 kB |
| Process | 130 nm-28% | 180 nm |
| Architecture | Tualatin (2000−2002) | Thoroughbred (2001−2002) |
| PassMark | 228+1% | 225 |
| Geekbench 6 Single | — | 180 |
| Geekbench 6 Multi | — | 651 |
Memory & Platform
The Pentium III 1400S uses the PGA370 socket (PCIe 1.1), while the Athlon XP 1800+ uses A (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches PC133 on the Pentium III 1400S versus DDR1 on the Athlon XP 1800+ — the Pentium III 1400S supports 197% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Pentium III 1400S supports up to 4 GB of RAM compared to 2 GB — 66.7% more capacity for professional workloads. Both feature 1-channel memory with ECC support. Chipset compatibility: Intel 815,VIA Apollo Pro 133T (Pentium III 1400S) and KT133,KT266,nForce2 (Athlon XP 1800+).
| Feature | Pentium III 1400S | Athlon XP 1800+ |
|---|---|---|
| Socket | PGA370 | A |
| PCIe Generation | PCIe 1.1 | PCIe 1.1 |
| Max RAM Speed | PC133+13200% | DDR1 |
| Max RAM Capacity | 4 GB+100% | 2 GB |
| RAM Channels | 1 | 1 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 0 | — |
Advanced Features
Both support No virtualization. Primary use case: Athlon XP 1800+ targets Budget. Direct competitor: Athlon XP 1800+ rivals Pentium D 830.
| Feature | Pentium III 1400S | Athlon XP 1800+ |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | — | No |
| AVX-512 | No | No |
| Virtualization | No | No |
| Target Use | — | Budget |
Value Analysis
The Pentium III 1400S launched at $250 MSRP, while the Athlon XP 1800+ debuted at $252. At current prices ($250 vs $30), the Athlon XP 1800+ is $220 cheaper. In terms of value (PassMark points per dollar), the Pentium III 1400S delivers 0.9 pts/$ vs 7.5 pts/$ for the Athlon XP 1800+ — making the Athlon XP 1800+ the 156.6% better value option.
| Feature | Pentium III 1400S | Athlon XP 1800+ |
|---|---|---|
| MSRP | $250 | $252 |
| Avg Price (30d) | $250 | $30-88% |
| Performance per Dollar | 0.9 | 7.5+733% |
| Release Date | 2002 | 2001 |
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