Athlon X2 340 vs Celeron 3865U
Athlon X2 340
Celeron 3865U
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 X2 340 is positioned at rank 462 and the Celeron 3865U is on rank 645, so the Athlon X2 340 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon X2 340
Performance Per Dollar Celeron 3865U
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon X2 340 | Celeron 3865U |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Trinity (2012−2013) / 32 nm) | ✨ Modern (Kaby Lake-U (2017) / 14 nm) |
💎 Value Proposition
| Insight | Athlon X2 340 | Celeron 3865U |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($15) | ✅ 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 X2 340 and Celeron 3865U
Athlon X2 340
The Athlon X2 340 is manufactured by AMD. It was released in 2009-01-01. It is based on the Trinity (2012−2013) architecture. It features 2 cores and 2 threads. Base frequency is 3.2 GHz, with boost up to 3.6 GHz. L2 cache: 1 MB (total). Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1600. Passmark benchmark score: 1,333 points. Launch price was $149.
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.
Processing Power
Both the Athlon X2 340 and Celeron 3865U share an identical 2-core/2-thread configuration. Boost clocks reach 3.6 GHz on the Athlon X2 340 versus 1.8 GHz on the Celeron 3865U — a 66.7% clock advantage for the Athlon X2 340 (base: 3.2 GHz vs 1.8 GHz). The Athlon X2 340 uses the Trinity (2012−2013) architecture (32 nm), while the Celeron 3865U uses Kaby Lake-U (2017) (14 nm). In PassMark, the Athlon X2 340 scores 1,333 against the Celeron 3865U's 1,343 — a 0.7% lead for the Celeron 3865U. Geekbench 6 single-core — the metric most relevant to gaming — records 397 vs 389, a 2% lead for the Athlon X2 340 that directly translates to higher frame rates. Multi-core Geekbench: 549 vs 674 (20.4% advantage for the Celeron 3865U).
| Feature | Athlon X2 340 | Celeron 3865U |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 3.6 GHz+100% | 1.8 GHz |
| Base Clock | 3.2 GHz+78% | 1.8 GHz |
| L3 Cache | — | 2 MB (total) |
| L2 Cache | 1 MB (total)+300% | 256K (per core) |
| Process | 32 nm | 14 nm-56% |
| Architecture | Trinity (2012−2013) | Kaby Lake-U (2017) |
| PassMark | 1,333 | 1,343 |
| Geekbench 6 Single | 397+2% | 389 |
| Geekbench 6 Multi | 549 | 674+23% |
Memory & Platform
The Athlon X2 340 uses the FM2 socket (PCIe 2.0), while the Celeron 3865U uses BGA1356 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1600 on the Athlon X2 340 versus DDR4-2133 / LPDDR3-1866 on the Celeron 3865U — the Celeron 3865U supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 32 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Athlon X2 340) vs 10 (Celeron 3865U) — the Athlon X2 340 offers 6 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A55,A75,A85X,A88X (Athlon X2 340) and 100-series,200-series (Celeron 3865U).
| Feature | Athlon X2 340 | Celeron 3865U |
|---|---|---|
| Socket | FM2 | BGA1356 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1600 | DDR4-2133 / LPDDR3-1866+33% |
| Max RAM Capacity | 32 GB | 32 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16+60% | 10 |
Advanced Features
Neither processor supports overclocking. Virtualization support: AMD-V (Athlon X2 340) vs VT-x / VT-d / EPT (Celeron 3865U). The Celeron 3865U includes integrated graphics (Intel HD Graphics 610), while the Athlon X2 340 requires a dedicated GPU. Primary use case: Athlon X2 340 targets Desktop, Celeron 3865U targets Entry-level. Direct competitor: Celeron 3865U rivals Pentium Gold 4415U.
| Feature | Athlon X2 340 | Celeron 3865U |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Intel HD Graphics 610 |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | AMD-V | VT-x / VT-d / EPT |
| Target Use | Desktop | Entry-level |
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