CPU
GPU
Athlon II Neo K345
Pentium 3805U
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 II Neo K345 is positioned at rank 812 and the Pentium 3805U is on rank 344, so the Pentium 3805U offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon II Neo K345
Performance Per Dollar Pentium 3805U
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II Neo K345 | Pentium 3805U |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($10) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Champlain (2010−2011) / 45 nm) | 🛑 Legacy (Broadwell-U (2015) / 14 nm) |
💎 Value Proposition
| Insight | Athlon II Neo K345 | Pentium 3805U |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($10) | ✅ 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 II Neo K345 and Pentium 3805U
Athlon II Neo K345
The Athlon II Neo K345 is manufactured by AMD. It was released in 2009-01-01. It is based on the Champlain (2010−2011) architecture. It features 2 cores and 2 threads. Max frequency: 1.4 GHz. L2 cache: 1 MB. Built on 45 nm process technology. Socket: S1. Thermal design power (TDP): 1 MB. Memory support: DDR3. Passmark benchmark score: 1,191 points. Launch price was $149.
Pentium 3805U
The Pentium 3805U is manufactured by Intel. It was released in 1 March 2015 (10 years ago). It is based on the Broadwell-U (2015) architecture. It features 2 cores and 2 threads. Base frequency is 1.9 GHz, with boost up to 1.9 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,196 points. Launch price was $161.
Processing Power
Both the Athlon II Neo K345 and Pentium 3805U share an identical 2-core/2-thread configuration. Boost clocks reach 1.4 GHz on the Athlon II Neo K345 versus 1.9 GHz on the Pentium 3805U — a 30.3% clock advantage for the Pentium 3805U. The Athlon II Neo K345 uses the Champlain (2010−2011) architecture (45 nm), while the Pentium 3805U uses Broadwell-U (2015) (14 nm). In PassMark, the Athlon II Neo K345 scores 1,191 against the Pentium 3805U's 1,196 — a 0.4% lead for the Pentium 3805U.
| Feature | Athlon II Neo K345 | Pentium 3805U |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 1.4 GHz | 1.9 GHz+36% |
| Base Clock | — | 1.9 GHz |
| L3 Cache | — | 2 MB (total) |
| L2 Cache | 1 MB+300% | 256K (per core) |
| Process | 45 nm | 14 nm-69% |
| Architecture | Champlain (2010−2011) | Broadwell-U (2015) |
| PassMark | 1,191 | 1,196 |
Memory & Platform
The Athlon II Neo K345 uses the S1 socket (PCIe 2.0), while the Pentium 3805U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR3-1066 memory speed. The Pentium 3805U supports up to 16 GB of RAM compared to 4 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Athlon II Neo K345) vs 12 (Pentium 3805U) — the Pentium 3805U offers 12 more lanes for additional GPUs or NVMe drives.
| Feature | Athlon II Neo K345 | Pentium 3805U |
|---|---|---|
| Socket | S1 | FCBGA1168 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1066 | DDR3L-1600 |
| Max RAM Capacity | 4 GB | 16 GB+300% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 12 |
Advanced Features
Virtualization: not specified (Athlon II Neo K345) / VT-x, VT-d (Pentium 3805U). The Pentium 3805U includes integrated graphics (HD Graphics (Broadwell)), while the Athlon II Neo K345 requires a dedicated GPU. Primary use case: Pentium 3805U targets Mobile.
| Feature | Athlon II Neo K345 | Pentium 3805U |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | HD Graphics (Broadwell) |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Mobile |
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