Sempron 3850 vs Athlon 64 X2 4000+
Sempron 3850
Athlon 64 X2 4000+
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 3850 is positioned at rank 507 and the Athlon 64 X2 4000+ is on rank 1082, so the Sempron 3850 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Sempron 3850
Performance Per Dollar Athlon 64 X2 4000+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Sempron 3850 | Athlon 64 X2 4000+ |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($10) |
| Longevity | 🛑 Legacy (Kabini (2013−2014) / 28 nm) | 🛑 Legacy (Windsor (2006−2007) / 90 nm) |
💎 Value Proposition
| Insight | Sempron 3850 | Athlon 64 X2 4000+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($10) |
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 3850 and Athlon 64 X2 4000+
Sempron 3850
The Sempron 3850 is manufactured by AMD. It was released in 2007-01-01. It is based on the Kabini (2013−2014) architecture. It features 4 cores and 4 threads. Max frequency: 1.3 GHz. L2 cache: 2048 kB. Built on 28 nm process technology. Socket: AM1. Thermal design power (TDP): 25 Watt. Memory support: DDR3-1600. Passmark benchmark score: 1,168 points. Launch price was $69.
Athlon 64 X2 4000+
The Athlon 64 X2 4000+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Windsor (2006−2007) architecture. It features 2 cores and 2 threads. Max frequency: 2 GHz. L3 cache: 0 kB. L2 cache: 512K. Built on 90 nm process technology. Socket: AM2. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 1,175 points. Launch price was $149.
Processing Power
The Sempron 3850 packs 4 cores / 4 threads, while the Athlon 64 X2 4000+ offers 2 cores / 2 threads — the Sempron 3850 has 2 more cores. Boost clocks reach 1.3 GHz on the Sempron 3850 versus 2 GHz on the Athlon 64 X2 4000+ — a 42.4% clock advantage for the Athlon 64 X2 4000+. The Sempron 3850 uses the Kabini (2013−2014) architecture (28 nm), while the Athlon 64 X2 4000+ uses Windsor (2006−2007) (90 nm). In PassMark, the Sempron 3850 scores 1,168 against the Athlon 64 X2 4000+'s 1,175 — a 0.6% lead for the Athlon 64 X2 4000+.
| Feature | Sempron 3850 | Athlon 64 X2 4000+ |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 2 |
| Boost Clock | 1.3 GHz | 2 GHz+54% |
| L3 Cache | — | 0 kB |
| L2 Cache | 2048 kB+300% | 512K |
| Process | 28 nm-69% | 90 nm |
| Architecture | Kabini (2013−2014) | Windsor (2006−2007) |
| PassMark | 1,168 | 1,175 |
| Geekbench 6 Single | — | 195 |
| Geekbench 6 Multi | — | 380 |
Memory & Platform
The Sempron 3850 uses the AM1 socket (PCIe 2.0), while the Athlon 64 X2 4000+ uses AM2 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Sempron 3850 | Athlon 64 X2 4000+ |
|---|---|---|
| Socket | AM1 | AM2 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | — | DDR2-800 |
| Max RAM Capacity | — | 4 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 0 |
Advanced Features
Virtualization: not specified (Sempron 3850) / AMD-V (Athlon 64 X2 4000+). Primary use case: Athlon 64 X2 4000+ targets Legacy Desktop.
| Feature | Sempron 3850 | Athlon 64 X2 4000+ |
|---|---|---|
| Integrated GPU | — | No |
| IGPU Model | — | None |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | AMD-V |
| Target Use | — | Legacy Desktop |
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