CPU
GPU
Sempron 145
Athlon 64 3400+
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 145 is positioned at rank 838 and the Athlon 64 3400+ is on rank 1116, so the Sempron 145 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Sempron 145
Performance Per Dollar Athlon 64 3400+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Sempron 145 | Athlon 64 3400+ |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($20) |
| Longevity | 🛑 Legacy (Sargas (2009−2011) / 45 nm) | 🛑 Legacy (Clawhammer (2001−2005) / 130 nm) |
💎 Value Proposition
| Insight | Sempron 145 | Athlon 64 3400+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($20) |
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 145 and Athlon 64 3400+
Sempron 145
The Sempron 145 is manufactured by AMD. It was released in 1 September 2010 (15 years ago). It is based on the Sargas (2009−2011) architecture. It features 1 cores and 1 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 45 Watt. Memory support: DDR3. Passmark benchmark score: 544 points. Launch price was $95.
Athlon 64 3400+
The Athlon 64 3400+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Clawhammer (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 2.4 GHz. L3 cache: 0 kB. L2 cache: 512K. Built on 130 nm process technology. Socket: 754. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 545 points. Launch price was $149.
Processing Power
Both the Sempron 145 and Athlon 64 3400+ share an identical 1-core/1-thread configuration. Boost clocks reach 2.8 GHz on the Sempron 145 versus 2.4 GHz on the Athlon 64 3400+ — a 15.4% clock advantage for the Sempron 145. The Sempron 145 uses the Sargas (2009−2011) architecture (45 nm), while the Athlon 64 3400+ uses Clawhammer (2001−2005) (130 nm). In PassMark, the Sempron 145 scores 544 against the Athlon 64 3400+'s 545 — a 0.2% lead for the Athlon 64 3400+. Both processors carry 0 kB of L3 cache.
| Feature | Sempron 145 | Athlon 64 3400+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2.8 GHz+17% | 2.4 GHz |
| Base Clock | 2.8 GHz | — |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 1 MB (per core)+100% | 512K |
| Process | 45 nm-65% | 130 nm |
| Architecture | Sargas (2009−2011) | Clawhammer (2001−2005) |
| PassMark | 544 | 545 |
Memory & Platform
The Sempron 145 uses the AM3 socket (PCIe 2.0), while the Athlon 64 3400+ uses 754 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Sempron 145 | Athlon 64 3400+ |
|---|---|---|
| Socket | AM3 | 754 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | — | DDR-400 |
| Max RAM Capacity | — | 4 GB |
| RAM Channels | — | 1 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 0 |
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