CPU
GPU
Athlon XP 1800+
Athlon XP 2100+
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 XP 1800+ is positioned at rank 1131 and the Athlon XP 2100+ is on rank 1139, so the Athlon XP 1800+ offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon XP 1800+
Performance Per Dollar Athlon XP 2100+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon XP 1800+ | Athlon XP 2100+ |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Thoroughbred (2001−2002) / 180 nm) | 🛑 Legacy (Thoroughbred (2001−2002) / 180 nm) |
💎 Value Proposition
| Insight | Athlon XP 1800+ | Athlon XP 2100+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+18%) |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 XP 1800+ and Athlon XP 2100+
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.
Athlon XP 2100+
The Athlon XP 2100+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Thoroughbred (2001−2002) architecture. It features 1 cores and 1 threads. Max frequency: 1.73 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 180 nm process technology. Socket: A. Thermal design power (TDP): 72 Watt. Passmark benchmark score: 265 points. Launch price was $149.
Processing Power
Both the Athlon XP 1800+ and Athlon XP 2100+ share an identical 1-core/1-thread configuration. Boost clocks reach 1.53 GHz on the Athlon XP 1800+ versus 1.73 GHz on the Athlon XP 2100+ — a 12.3% clock advantage for the Athlon XP 2100+. Both are built on the Thoroughbred (2001−2002) architecture using a 180 nm process. In PassMark, the Athlon XP 1800+ scores 225 against the Athlon XP 2100+'s 265 — a 16.3% lead for the Athlon XP 2100+. Both processors carry 0 kB of L3 cache.
| Feature | Athlon XP 1800+ | Athlon XP 2100+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 1.53 GHz | 1.73 GHz+13% |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 256 kB | 256 kB |
| Process | 180 nm | 180 nm |
| Architecture | Thoroughbred (2001−2002) | Thoroughbred (2001−2002) |
| PassMark | 225 | 265+18% |
| Geekbench 6 Single | 180 | — |
| Geekbench 6 Multi | 651 | — |
Memory & Platform
Both processors use the A socket with PCIe 1.1. Maximum memory speed reaches DDR1 on the Athlon XP 1800+ versus DDR-266 on the Athlon XP 2100+ — the Athlon XP 1800+ supports -201.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Athlon XP 2100+ 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: KT133,KT266,nForce2 (Athlon XP 1800+) and AMD Socket A (Athlon XP 2100+).
| Feature | Athlon XP 1800+ | Athlon XP 2100+ |
|---|---|---|
| Socket | A | A |
| PCIe Generation | PCIe 1.1 | PCIe 1.1 |
| Max RAM Speed | DDR1 | DDR-266 |
| Max RAM Capacity | 2 GB | 4 GB+100% |
| RAM Channels | 1 | 1 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | — | 0 |
Advanced Features
Virtualization: No (Athlon XP 1800+) / not specified (Athlon XP 2100+). Primary use case: Athlon XP 1800+ targets Budget. Direct competitor: Athlon XP 1800+ rivals Pentium D 830.
| Feature | Athlon XP 1800+ | Athlon XP 2100+ |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | No | — |
| Target Use | Budget | — |
Value Analysis
The Athlon XP 1800+ launched at $252 MSRP, while the Athlon XP 2100+ debuted at $420. At current prices ($30 vs $30), the Athlon XP 2100+ is $0 cheaper. In terms of value (PassMark points per dollar), the Athlon XP 1800+ delivers 7.5 pts/$ vs 8.8 pts/$ for the Athlon XP 2100+ — making the Athlon XP 2100+ the 16.3% better value option.
| Feature | Athlon XP 1800+ | Athlon XP 2100+ |
|---|---|---|
| MSRP | $252-40% | $420 |
| Avg Price (30d) | $30 | $30 |
| Performance per Dollar | 7.5 | 8.8+17% |
| Release Date | 2001 | 2001 |
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