Celeron 3855U vs Phenom X3 8450
Celeron 3855U
Phenom X3 8450
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 3855U is positioned at rank 193 and the Phenom X3 8450 is on rank 1023, so the Celeron 3855U offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Celeron 3855U
Performance Per Dollar Phenom X3 8450
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron 3855U | Phenom X3 8450 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($147) |
| Longevity | 🛑 Legacy (Skylake (2015−2016) / 14 nm) | 🛑 Legacy (Toliman (2008) / 65 nm) |
💎 Value Proposition
| Insight | Celeron 3855U | Phenom X3 8450 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($147) |
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 3855U and Phenom X3 8450
Celeron 3855U
The Celeron 3855U is manufactured by Intel. It was released in 15 August 2015 (10 years ago). It is based on the Skylake (2015−2016) architecture. It features 2 cores and 2 threads. Base frequency is 1.6 GHz, with boost up to 1.6 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600. Passmark benchmark score: 1,215 points. Launch price was $107.
Phenom X3 8450
The Phenom X3 8450 is manufactured by AMD. It was released in 2009-01-01. It is based on the Toliman (2008) architecture. It features 3 cores and 3 threads. Max frequency: 2.1 GHz. L3 cache: 2 MB (total). L2 cache: 512 kB (per core). Built on 65 nm process technology. Socket: AM2+. Thermal design power (TDP): 95 Watt. Passmark benchmark score: 1,221 points. Launch price was $149.
Processing Power
The Celeron 3855U packs 2 cores / 2 threads, while the Phenom X3 8450 offers 3 cores / 3 threads — the Phenom X3 8450 has 1 more core. Boost clocks reach 1.6 GHz on the Celeron 3855U versus 2.1 GHz on the Phenom X3 8450 — a 27% clock advantage for the Phenom X3 8450. The Celeron 3855U uses the Skylake (2015−2016) architecture (14 nm), while the Phenom X3 8450 uses Toliman (2008) (65 nm). In PassMark, the Celeron 3855U scores 1,215 against the Phenom X3 8450's 1,221 — a 0.5% lead for the Phenom X3 8450. L3 cache: 2 MB on the Celeron 3855U vs 2 MB (total) on the Phenom X3 8450.
| Feature | Celeron 3855U | Phenom X3 8450 |
|---|---|---|
| Cores / Threads | 2 / 2 | 3 / 3+50% |
| Boost Clock | 1.6 GHz | 2.1 GHz+31% |
| Base Clock | 1.6 GHz | — |
| L3 Cache | 2 MB | 2 MB (total) |
| L2 Cache | 512 kB | 512 kB (per core) |
| Process | 14 nm-78% | 65 nm |
| Architecture | Skylake (2015−2016) | Toliman (2008) |
| PassMark | 1,215 | 1,221 |
| Geekbench 6 Single | 361 | — |
| Geekbench 6 Multi | 632 | — |
Memory & Platform
The Celeron 3855U uses the BGA1356 socket (PCIe 3.0), while the Phenom X3 8450 uses AM2+ (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Celeron 3855U | Phenom X3 8450 |
|---|---|---|
| Socket | BGA1356 | AM2+ |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | DDR4 2133 MHz | — |
| Max RAM Capacity | 32 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 10 | — |
Advanced Features
Virtualization: true (Celeron 3855U) / not specified (Phenom X3 8450). The Celeron 3855U includes integrated graphics (Intel HD Graphics 510), while the Phenom X3 8450 requires a dedicated GPU. Primary use case: Celeron 3855U targets Budget. Direct competitor: Celeron 3855U rivals Pentium 3825U.
| Feature | Celeron 3855U | Phenom X3 8450 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Intel HD Graphics 510 | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | true | — |
| Target Use | Budget | — |
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