Pentium 3805U vs Athlon II Neo K345
Pentium 3805U
Athlon II Neo K345
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 Pentium 3805U is positioned at rank 344 and the Athlon II Neo K345 is on rank 812, 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 Pentium 3805U
Performance Per Dollar Athlon II Neo K345
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium 3805U | Athlon II Neo K345 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($10) |
| Longevity | 🛑 Legacy (Broadwell-U (2015) / 14 nm) | 🛑 Legacy (Champlain (2010−2011) / 45 nm) |
💎 Value Proposition
| Insight | Pentium 3805U | Athlon II Neo K345 |
|---|---|---|
| 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 Pentium 3805U and Athlon II Neo K345
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.
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.
Processing Power
Both the Pentium 3805U and Athlon II Neo K345 share an identical 2-core/2-thread configuration. Boost clocks reach 1.9 GHz on the Pentium 3805U versus 1.4 GHz on the Athlon II Neo K345 — a 30.3% clock advantage for the Pentium 3805U. The Pentium 3805U uses the Broadwell-U (2015) architecture (14 nm), while the Athlon II Neo K345 uses Champlain (2010−2011) (45 nm). In PassMark, the Pentium 3805U scores 1,196 against the Athlon II Neo K345's 1,191 — a 0.4% lead for the Pentium 3805U.
| Feature | Pentium 3805U | Athlon II Neo K345 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 1.9 GHz+36% | 1.4 GHz |
| Base Clock | 1.9 GHz | — |
| L3 Cache | 2 MB (total) | — |
| L2 Cache | 256K (per core) | 1 MB+300% |
| Process | 14 nm-69% | 45 nm |
| Architecture | Broadwell-U (2015) | Champlain (2010−2011) |
| PassMark | 1,196 | 1,191 |
Memory & Platform
The Pentium 3805U uses the FCBGA1168 socket (PCIe 3.0), while the Athlon II Neo K345 uses S1 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR3L-1600 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: 12 (Pentium 3805U) vs 0 (Athlon II Neo K345) — the Pentium 3805U offers 12 more lanes for additional GPUs or NVMe drives.
| Feature | Pentium 3805U | Athlon II Neo K345 |
|---|---|---|
| Socket | FCBGA1168 | S1 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | DDR3L-1600 | DDR3-1066 |
| Max RAM Capacity | 16 GB+300% | 4 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 12 | 0 |
Advanced Features
Virtualization: VT-x, VT-d (Pentium 3805U) / not specified (Athlon II Neo K345). 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 | Pentium 3805U | Athlon II Neo K345 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | HD Graphics (Broadwell) | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d | — |
| Target Use | Mobile | — |
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