CPU
GPU
Pentium 3805U
Celeron 3965Y
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 Celeron 3965Y is on rank 198, so the Celeron 3965Y 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 Celeron 3965Y
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium 3805U | Celeron 3965Y |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Broadwell-U (2015) / 14 nm) | ✨ Modern (Kaby Lake (2016−2019) / 14 nm) |
💎 Value Proposition
| Insight | Pentium 3805U | Celeron 3965Y |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 Celeron 3965Y
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.
Celeron 3965Y
The Celeron 3965Y is manufactured by Intel. It was released in 2007-01-01. It is based on the Kaby Lake (2016−2019) architecture. It features 2 cores and 2 threads. Base frequency is 1.5 GHz, with boost up to 1.3 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: FCBGA1515. Thermal design power (TDP): 6 Watt. Memory support: DDR3. Passmark benchmark score: 1,201 points. Launch price was $69.
Processing Power
Both the Pentium 3805U and Celeron 3965Y share an identical 2-core/2-thread configuration. Boost clocks reach 1.9 GHz on the Pentium 3805U versus 1.3 GHz on the Celeron 3965Y — a 37.5% clock advantage for the Pentium 3805U (base: 1.9 GHz vs 1.5 GHz). The Pentium 3805U uses the Broadwell-U (2015) architecture (14 nm), while the Celeron 3965Y uses Kaby Lake (2016−2019) (14 nm). In PassMark, the Pentium 3805U scores 1,196 against the Celeron 3965Y's 1,201 — a 0.4% lead for the Celeron 3965Y. L3 cache: 2 MB (total) on the Pentium 3805U vs 2 MB on the Celeron 3965Y.
| Feature | Pentium 3805U | Celeron 3965Y |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 1.9 GHz+46% | 1.3 GHz |
| Base Clock | 1.9 GHz+27% | 1.5 GHz |
| L3 Cache | 2 MB (total) | 2 MB |
| L2 Cache | 256K (per core) | 512 kB+100% |
| Process | 14 nm | 14 nm |
| Architecture | Broadwell-U (2015) | Kaby Lake (2016−2019) |
| PassMark | 1,196 | 1,201 |
| Geekbench 6 Single | — | 372 |
| Geekbench 6 Multi | — | 708 |
Memory & Platform
The Pentium 3805U uses the FCBGA1168 socket (PCIe 3.0), while the Celeron 3965Y uses FCBGA1515 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR3L-1600 memory speed. Both support up to 16 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 12 (Pentium 3805U) vs 10 (Celeron 3965Y) — the Pentium 3805U offers 2 more lanes for additional GPUs or NVMe drives.
| Feature | Pentium 3805U | Celeron 3965Y |
|---|---|---|
| Socket | FCBGA1168 | FCBGA1515 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR3L-1600 | LPDDR3-1866 |
| Max RAM Capacity | 16 GB | 16 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 12+20% | 10 |
Advanced Features
Neither processor supports overclocking. Both support VT-x, VT-d virtualization. Both include integrated graphics — HD Graphics (Broadwell) (Pentium 3805U) and Intel HD Graphics 615 (Celeron 3965Y) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Pentium 3805U targets Mobile, Celeron 3965Y targets Low Power. Direct competitor: Celeron 3965Y rivals Pentium Gold 4415Y.
| Feature | Pentium 3805U | Celeron 3965Y |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | HD Graphics (Broadwell) | Intel HD Graphics 615 |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x, VT-d | VT-x, VT-d |
| Target Use | Mobile | Low Power |
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