CPU
GPU
Celeron 3865U
Celeron 4205U
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 3865U is positioned at rank 645 and the Celeron 4205U is on rank 152, so the Celeron 4205U offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Celeron 3865U
Performance Per Dollar Celeron 4205U
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron 3865U | Celeron 4205U |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Kaby Lake-U (2017) / 14 nm) | ✨ Modern (Whiskey Lake-U (2018−2019) / 14 nm) |
💎 Value Proposition
| Insight | Celeron 3865U | Celeron 4205U |
|---|---|---|
| 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 3865U and Celeron 4205U
Celeron 3865U
The Celeron 3865U is manufactured by Intel. It was released in 3 January 2017 (8 years ago). It is based on the Kaby Lake-U (2017) architecture. It features 2 cores and 2 threads. Base frequency is 1.8 GHz, with boost up to 1.8 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 1,343 points. Launch price was $107.
Celeron 4205U
The Celeron 4205U is manufactured by Intel. It was released in 23 January 2019 (6 years ago). It is based on the Whiskey Lake-U (2018−2019) architecture. It features 2 cores and 2 threads. Base frequency is 1.8 GHz, with boost up to 1.8 GHz. L3 cache: 2 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 1,350 points. Launch price was $107.
Processing Power
Both the Celeron 3865U and Celeron 4205U share an identical 2-core/2-thread configuration. Boost clocks reach 1.8 GHz on the Celeron 3865U versus 1.8 GHz on the Celeron 4205U — identical boost frequencies (base: 1.8 GHz vs 1.8 GHz). The Celeron 3865U uses the Kaby Lake-U (2017) architecture (14 nm), while the Celeron 4205U uses Whiskey Lake-U (2018−2019) (14 nm). In PassMark, the Celeron 3865U scores 1,343 against the Celeron 4205U's 1,350 — a 0.5% lead for the Celeron 4205U. Geekbench 6 single-core — the metric most relevant to gaming — records 389 vs 347, a 11.4% lead for the Celeron 3865U that directly translates to higher frame rates. Multi-core Geekbench: 674 vs 585 (14.1% advantage for the Celeron 3865U). Both processors carry 2 MB (total) of L3 cache.
| Feature | Celeron 3865U | Celeron 4205U |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 1.8 GHz | 1.8 GHz |
| Base Clock | 1.8 GHz | 1.8 GHz |
| L3 Cache | 2 MB (total) | 2 MB (total) |
| L2 Cache | 256K (per core) | 256 kB (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Kaby Lake-U (2017) | Whiskey Lake-U (2018−2019) |
| PassMark | 1,343 | 1,350 |
| Geekbench 6 Single | 389+12% | 347 |
| Geekbench 6 Multi | 674+15% | 585 |
Memory & Platform
The Celeron 3865U uses the BGA1356 socket (PCIe 3.0), while the Celeron 4205U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-2133 / LPDDR3-1866 memory speed. The Celeron 4205U supports up to 64 GB of RAM compared to 32 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 10 (Celeron 3865U) vs 12 (Celeron 4205U) — the Celeron 4205U offers 2 more lanes for additional GPUs or NVMe drives. Chipset compatibility: 100-series,200-series (Celeron 3865U) and Whiskey Lake-U (Celeron 4205U).
| Feature | Celeron 3865U | Celeron 4205U |
|---|---|---|
| Socket | BGA1356 | FCBGA1528 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2133 / LPDDR3-1866 | DDR4-2133 |
| Max RAM Capacity | 32 GB | 64 GB+100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 10 | 12+20% |
Advanced Features
Neither processor supports overclocking. Virtualization support: VT-x / VT-d / EPT (Celeron 3865U) vs VT-x, VT-d (Celeron 4205U). Both include integrated graphics — Intel HD Graphics 610 (Celeron 3865U) and UHD Graphics 610 (Celeron 4205U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron 3865U targets Entry-level, Celeron 4205U targets Budget. Direct competitor: Celeron 3865U rivals Pentium Gold 4415U; Celeron 4205U rivals Pentium Gold 4417U.
| Feature | Celeron 3865U | Celeron 4205U |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Intel HD Graphics 610 | UHD Graphics 610 |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x / VT-d / EPT | VT-x, VT-d |
| Target Use | Entry-level | Budget |
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