CPU
GPU
Sempron 3100+
Athlon XP 2800+
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 Sempron 3100+ is positioned at rank 1068 and the Athlon XP 2800+ is on rank 1125, 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 Sempron 3100+
Performance Per Dollar Athlon XP 2800+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Sempron 3100+ | Athlon XP 2800+ |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($15) | ⚠️ Higher cost ($35) |
| Longevity | 🛑 Legacy (Palermo (2001−2005) / 130 nm) | 🛑 Legacy (Barton (2001−2004) / 130 nm) |
💎 Value Proposition
| Insight | Sempron 3100+ | Athlon XP 2800+ |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+128%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($15) | ⚠️ Higher cost ($35) |
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 Sempron 3100+ and Athlon XP 2800+
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.
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.
Processing Power
Both the Sempron 3100+ and Athlon XP 2800+ share an identical 1-core/1-thread configuration. Boost clocks reach 1.8 GHz on the Sempron 3100+ versus 2.25 GHz on the Athlon XP 2800+ — a 22.2% clock advantage for the Athlon XP 2800+. The Sempron 3100+ uses the Palermo (2001−2005) architecture (130 nm), while the Athlon XP 2800+ uses Barton (2001−2004) (130 nm). In PassMark, the Sempron 3100+ scores 372 against the Athlon XP 2800+'s 380 — a 2.1% lead for the Athlon XP 2800+. Both processors carry 0 kB of L3 cache.
| Feature | Sempron 3100+ | Athlon XP 2800+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 1.8 GHz | 2.25 GHz+25% |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 256 kB | 512K+100% |
| Process | 130 nm | 130 nm |
| Architecture | Palermo (2001−2005) | Barton (2001−2004) |
| PassMark | 372 | 380+2% |
| Geekbench 6 Single | — | 250 |
| Geekbench 6 Multi | — | 250 |
Memory & Platform
The Sempron 3100+ uses the 754 socket (PCIe 2.0), while the Athlon XP 2800+ uses A (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR 400 MHz on the Sempron 3100+ versus DDR-333 on the Athlon XP 2800+ — 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: nForce3,VIA K8T800 (Sempron 3100+) and KT400,nForce2 Ultra 400 (Athlon XP 2800+).
| Feature | Sempron 3100+ | Athlon XP 2800+ |
|---|---|---|
| Socket | 754 | A |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | DDR 400 MHz | DDR-333 |
| Max RAM Capacity | 3 GB+50% | 2 GB |
| 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: false (Sempron 3100+) vs None (Athlon XP 2800+). Primary use case: Sempron 3100+ targets Budget, Athlon XP 2800+ targets Legacy Desktop.
| Feature | Sempron 3100+ | Athlon XP 2800+ |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | false | None |
| Target Use | Budget | Legacy Desktop |
Value Analysis
The Sempron 3100+ launched at $65 MSRP, while the Athlon XP 2800+ debuted at $375. At current prices ($15 vs $35), the Sempron 3100+ is $20 cheaper. In terms of value (PassMark points per dollar), the Sempron 3100+ delivers 24.8 pts/$ vs 10.9 pts/$ for the Athlon XP 2800+ — making the Sempron 3100+ the 78.2% better value option.
| Feature | Sempron 3100+ | Athlon XP 2800+ |
|---|---|---|
| MSRP | $65-83% | $375 |
| Avg Price (30d) | $15-57% | $35 |
| Performance per Dollar | 24.8+128% | 10.9 |
| Release Date | 2001 | 2001 |
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