Athlon XP 2800+ vs Atom E3815
Athlon XP 2800+
Atom E3815
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 Atom E3815 is on rank 1103, so the Atom E3815 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 Atom E3815
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon XP 2800+ | Atom E3815 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($35) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Barton (2001−2004) / 130 nm) | 🛑 Legacy (Bay Trail-I (2013) / 22 nm) |
💎 Value Proposition
| Insight | Athlon XP 2800+ | Atom E3815 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($35) | ✅ More affordable ($0) |
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 Atom E3815
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.
Atom E3815
The Atom E3815 is manufactured by Intel. It was released in 8 October 2013 (12 years ago). It is based on the Bay Trail-I (2013) architecture. It features 1 cores and 1 threads. Max frequency: 1.47 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 22 nm process technology. Socket: FCBGA1170. Thermal design power (TDP): 512 kB. Memory support: DDR3. Passmark benchmark score: 365 points. Launch price was $134.
Processing Power
Both the Athlon XP 2800+ and Atom E3815 share an identical 1-core/1-thread configuration. Boost clocks reach 2.25 GHz on the Athlon XP 2800+ versus 1.47 GHz on the Atom E3815 — a 41.9% clock advantage for the Athlon XP 2800+. The Athlon XP 2800+ uses the Barton (2001−2004) architecture (130 nm), while the Atom E3815 uses Bay Trail-I (2013) (22 nm). In PassMark, the Athlon XP 2800+ scores 380 against the Atom E3815's 365 — a 4% lead for the Athlon XP 2800+. Both processors carry 0 kB of L3 cache.
| Feature | Athlon XP 2800+ | Atom E3815 |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2.25 GHz+53% | 1.47 GHz |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512K | 512 kB (per core) |
| Process | 130 nm | 22 nm-83% |
| Architecture | Barton (2001−2004) | Bay Trail-I (2013) |
| PassMark | 380+4% | 365 |
| Geekbench 6 Single | 250 | — |
| Geekbench 6 Multi | 250 | — |
Memory & Platform
The Athlon XP 2800+ uses the A socket (PCIe 1.1), while the Atom E3815 uses FCBGA1170 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR-333 on the Athlon XP 2800+ versus DDR3L-1066 on the Atom E3815 — the Atom E3815 supports -203.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Atom E3815 supports up to 8 GB of RAM compared to 2 GB — 120% more capacity for professional workloads. Both feature 1-channel memory with ECC support. PCIe lanes: 0 (Athlon XP 2800+) vs 4 (Atom E3815) — the Atom E3815 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: KT400,nForce2 Ultra 400 (Athlon XP 2800+) and Intel FCBGA1170 (Atom E3815).
| Feature | Athlon XP 2800+ | Atom E3815 |
|---|---|---|
| Socket | A | FCBGA1170 |
| PCIe Generation | PCIe 1.1 | PCIe 2.0+82% |
| Max RAM Speed | DDR-333 | DDR3L-1066 |
| Max RAM Capacity | 2 GB | 8 GB+300% |
| RAM Channels | 1 | 1 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 0 | 4 |
Advanced Features
Virtualization: None (Athlon XP 2800+) / not specified (Atom E3815). The Atom E3815 includes integrated graphics (Intel HD Graphics (Bay Trail)), while the Athlon XP 2800+ requires a dedicated GPU. Primary use case: Athlon XP 2800+ targets Legacy Desktop.
| Feature | Athlon XP 2800+ | Atom E3815 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Intel HD Graphics (Bay Trail) |
| Unlocked | Yes | — |
| AVX-512 | No | — |
| Virtualization | None | — |
| Target Use | Legacy Desktop | — |
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