CPU
GPU
Celeron 3965Y
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 Celeron 3965Y is positioned at rank 198 and the Pentium 3805U is on rank 344, 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 Celeron 3965Y
Performance Per Dollar Pentium 3805U
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron 3965Y | Pentium 3805U |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Kaby Lake (2016−2019) / 14 nm) | 🛑 Legacy (Broadwell-U (2015) / 14 nm) |
💎 Value Proposition
| Insight | Celeron 3965Y | Pentium 3805U |
|---|---|---|
| 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 Celeron 3965Y and Pentium 3805U
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.
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 Celeron 3965Y and Pentium 3805U share an identical 2-core/2-thread configuration. Boost clocks reach 1.3 GHz on the Celeron 3965Y versus 1.9 GHz on the Pentium 3805U — a 37.5% clock advantage for the Pentium 3805U (base: 1.5 GHz vs 1.9 GHz). The Celeron 3965Y uses the Kaby Lake (2016−2019) architecture (14 nm), while the Pentium 3805U uses Broadwell-U (2015) (14 nm). In PassMark, the Celeron 3965Y scores 1,201 against the Pentium 3805U's 1,196 — a 0.4% lead for the Celeron 3965Y. L3 cache: 2 MB on the Celeron 3965Y vs 2 MB (total) on the Pentium 3805U.
| Feature | Celeron 3965Y | Pentium 3805U |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 1.3 GHz | 1.9 GHz+46% |
| Base Clock | 1.5 GHz | 1.9 GHz+27% |
| L3 Cache | 2 MB | 2 MB (total) |
| L2 Cache | 512 kB+100% | 256K (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Kaby Lake (2016−2019) | Broadwell-U (2015) |
| PassMark | 1,201 | 1,196 |
| Geekbench 6 Single | 372 | — |
| Geekbench 6 Multi | 708 | — |
Memory & Platform
The Celeron 3965Y uses the FCBGA1515 socket (PCIe 3.0), while the Pentium 3805U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to LPDDR3-1866 memory speed. Both support up to 16 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 10 (Celeron 3965Y) vs 12 (Pentium 3805U) — the Pentium 3805U offers 2 more lanes for additional GPUs or NVMe drives.
| Feature | Celeron 3965Y | Pentium 3805U |
|---|---|---|
| Socket | FCBGA1515 | FCBGA1168 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | LPDDR3-1866 | DDR3L-1600 |
| Max RAM Capacity | 16 GB | 16 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 10 | 12+20% |
Advanced Features
Neither processor supports overclocking. Both support VT-x, VT-d virtualization. Both include integrated graphics — Intel HD Graphics 615 (Celeron 3965Y) and HD Graphics (Broadwell) (Pentium 3805U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron 3965Y targets Low Power, Pentium 3805U targets Mobile. Direct competitor: Celeron 3965Y rivals Pentium Gold 4415Y.
| Feature | Celeron 3965Y | Pentium 3805U |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Intel HD Graphics 615 | HD Graphics (Broadwell) |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x, VT-d | VT-x, VT-d |
| Target Use | Low Power | Mobile |
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