CPU
GPU
Athlon XP 2800+
Sempron 3100+
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 2800+ is positioned at rank 1125 and the Sempron 3100+ is on rank 1068, so the Sempron 3100+ 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 2800+
Performance Per Dollar Sempron 3100+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon XP 2800+ | Sempron 3100+ |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($35) | ✅ More affordable ($15) |
| Longevity | 🛑 Legacy (Barton (2001−2004) / 130 nm) | 🛑 Legacy (Palermo (2001−2005) / 130 nm) |
💎 Value Proposition
| Insight | Athlon XP 2800+ | Sempron 3100+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+128%) |
| Upfront Cost | ⚠️ Higher cost ($35) | ✅ More affordable ($15) |
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 2800+ and Sempron 3100+
Athlon XP 2800+
The Athlon XP 2800+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Barton (2001−2004) architecture. It features 1 cores and 1 threads. Max frequency: 2.25 GHz. L3 cache: 0 kB. L2 cache: 512K. Built on 130 nm process technology. Socket: A. Thermal design power (TDP): 74 Watt. Passmark benchmark score: 380 points. Launch price was $149.
Sempron 3100+
The Sempron 3100+ is manufactured by AMD. It was released in Janeiro 2001 (24 years ago). It is based on the Palermo (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 1.8 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 130 nm process technology. Socket: 754. Thermal design power (TDP): 62 Watt. Passmark benchmark score: 372 points. Launch price was $60.
Processing Power
Both the Athlon XP 2800+ and Sempron 3100+ share an identical 1-core/1-thread configuration. Boost clocks reach 2.25 GHz on the Athlon XP 2800+ versus 1.8 GHz on the Sempron 3100+ — a 22.2% clock advantage for the Athlon XP 2800+. The Athlon XP 2800+ uses the Barton (2001−2004) architecture (130 nm), while the Sempron 3100+ uses Palermo (2001−2005) (130 nm). In PassMark, the Athlon XP 2800+ scores 380 against the Sempron 3100+'s 372 — a 2.1% lead for the Athlon XP 2800+. Both processors carry 0 kB of L3 cache.
| Feature | Athlon XP 2800+ | Sempron 3100+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2.25 GHz+25% | 1.8 GHz |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512K+100% | 256 kB |
| Process | 130 nm | 130 nm |
| Architecture | Barton (2001−2004) | Palermo (2001−2005) |
| PassMark | 380+2% | 372 |
| Geekbench 6 Single | 250 | — |
| Geekbench 6 Multi | 250 | — |
Memory & Platform
The Athlon XP 2800+ uses the A socket (PCIe 1.1), while the Sempron 3100+ uses 754 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR-333 on the Athlon XP 2800+ versus DDR 400 MHz on the Sempron 3100+ — the Sempron 3100+ supports 2188.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Sempron 3100+ supports up to 3 GB of RAM compared to 2 GB — 40% more capacity for professional workloads. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: KT400,nForce2 Ultra 400 (Athlon XP 2800+) and nForce3,VIA K8T800 (Sempron 3100+).
| Feature | Athlon XP 2800+ | Sempron 3100+ |
|---|---|---|
| Socket | A | 754 |
| PCIe Generation | PCIe 1.1 | PCIe 2.0+82% |
| Max RAM Speed | DDR-333 | DDR 400 MHz |
| Max RAM Capacity | 2 GB | 3 GB+50% |
| RAM Channels | 1 | 1 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 0 |
Advanced Features
Only the Athlon XP 2800+ has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: None (Athlon XP 2800+) vs false (Sempron 3100+). Primary use case: Athlon XP 2800+ targets Legacy Desktop, Sempron 3100+ targets Budget.
| Feature | Athlon XP 2800+ | Sempron 3100+ |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | Yes | No |
| AVX-512 | No | No |
| Virtualization | None | false |
| Target Use | Legacy Desktop | Budget |
Value Analysis
The Athlon XP 2800+ launched at $375 MSRP, while the Sempron 3100+ debuted at $65. At current prices ($35 vs $15), the Sempron 3100+ is $20 cheaper. In terms of value (PassMark points per dollar), the Athlon XP 2800+ delivers 10.9 pts/$ vs 24.8 pts/$ for the Sempron 3100+ — making the Sempron 3100+ the 78.2% better value option.
| Feature | Athlon XP 2800+ | Sempron 3100+ |
|---|---|---|
| MSRP | $375 | $65-83% |
| Avg Price (30d) | $35 | $15-57% |
| Performance per Dollar | 10.9 | 24.8+128% |
| Release Date | 2001 | 2001 |
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