Celeron 3855U vs Ryzen 9 5900X
Celeron 3855U
Ryzen 9 5900X
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. The Celeron 3855U is positioned at rank #193 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Celeron 3855U
Performance Per Dollar Ryzen 9 5900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron 3855U | Ryzen 9 5900X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($350) |
| Longevity | 🛑 Legacy (Skylake (2015−2016) / 14 nm) | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Celeron 3855U | Ryzen 9 5900X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($350) |
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 Ryzen 9 5900X
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.
Ryzen 9 5900X
The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.
Processing Power
The Celeron 3855U packs 2 cores / 2 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Ryzen 9 5900X has 10 more cores. Boost clocks reach 1.6 GHz on the Celeron 3855U versus 4.8 GHz on the Ryzen 9 5900X — a 100% clock advantage for the Ryzen 9 5900X (base: 1.6 GHz vs 3.7 GHz). The Celeron 3855U uses the Skylake (2015−2016) architecture (14 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Celeron 3855U scores 1,215 against the Ryzen 9 5900X's 38,955 — a 187.9% lead for the Ryzen 9 5900X. Geekbench 6 single-core — the metric most relevant to gaming — records 361 vs 2,174, a 143% lead for the Ryzen 9 5900X that directly translates to higher frame rates. Multi-core Geekbench: 632 vs 11,888 (179.8% advantage for the Ryzen 9 5900X). L3 cache: 2 MB on the Celeron 3855U vs 64 MB on the Ryzen 9 5900X.
| Feature | Celeron 3855U | Ryzen 9 5900X |
|---|---|---|
| Cores / Threads | 2 / 2 | 12 / 24+500% |
| Boost Clock | 1.6 GHz | 4.8 GHz+200% |
| Base Clock | 1.6 GHz | 3.7 GHz+131% |
| L3 Cache | 2 MB | 64 MB+3100% |
| L2 Cache | 512 kB | 512K (per core) |
| Process | 14 nm | 7 nm, 12 nm-50% |
| Architecture | Skylake (2015−2016) | Vermeer (Zen3) (2020−2022) |
| PassMark | 1,215 | 38,955+3106% |
| Cinebench R23 Multi | — | 21,000 |
| Geekbench 6 Single | 361 | 2,174+502% |
| Geekbench 6 Multi | 632 | 11,888+1781% |
Memory & Platform
The Celeron 3855U uses the BGA1356 socket (PCIe 3.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4 2133 MHz on the Celeron 3855U versus DDR4-3200 on the Ryzen 9 5900X — the Celeron 3855U supports 200% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 5900X supports up to 128 GB of RAM compared to 32 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 10 (Celeron 3855U) vs 24 (Ryzen 9 5900X) — the Ryzen 9 5900X offers 14 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FCBGA1356 (Celeron 3855U) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).
| Feature | Celeron 3855U | Ryzen 9 5900X |
|---|---|---|
| Socket | BGA1356 | AM4 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | DDR4 2133 MHz | DDR4-3200 |
| Max RAM Capacity | 32 GB | 128 GB+300% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 10 | 24+140% |
Advanced Features
Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: true (Celeron 3855U) vs AMD-V (Ryzen 9 5900X). The Celeron 3855U includes integrated graphics (Intel HD Graphics 510), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Celeron 3855U targets Budget, Ryzen 9 5900X targets Workstation. Direct competitor: Celeron 3855U rivals Pentium 3825U; Ryzen 9 5900X rivals Core i9-12900K.
| Feature | Celeron 3855U | Ryzen 9 5900X |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Intel HD Graphics 510 | — |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | true | AMD-V |
| Target Use | Budget | Workstation |
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