Atom C3858 vs Xeon X5672
Atom C3858
Xeon X5672
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 Atom C3858 is positioned at rank 310 and the Xeon X5672 is on rank 670, so the Atom C3858 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Atom C3858
Performance Per Dollar Xeon X5672
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom C3858 | Xeon X5672 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($44) |
| Longevity | ✨ Modern (Goldmont (2016−2017) / 14 nm) | 🛑 Legacy (Westmere-EP (2010−2011) / 32 nm) |
💎 Value Proposition
| Insight | Atom C3858 | Xeon X5672 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($44) |
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 Atom C3858 and Xeon X5672
Atom C3858
The Atom C3858 is manufactured by Intel. It was released in 15 August 2017 (8 years ago). It is based on the Goldmont (2016−2017) architecture. It features 12 cores and 12 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 12 MB. L2 cache: 12 MB. Built on 14 nm process technology. Socket: FCBGA1310. Thermal design power (TDP): 25 Watt. Memory support: DDR4: 2400. Passmark benchmark score: 5,040 points. Launch price was $332.
Xeon X5672
The Xeon X5672 is manufactured by Intel. It was released in 14 February 2011 (14 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 4 cores and 8 threads. Base frequency is 3.2 GHz, with boost up to 3.6 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 5,036 points. Launch price was $115.
Processing Power
The Atom C3858 packs 12 cores / 12 threads, while the Xeon X5672 offers 4 cores / 8 threads — the Atom C3858 has 8 more cores. Boost clocks reach 2 GHz on the Atom C3858 versus 3.6 GHz on the Xeon X5672 — a 57.1% clock advantage for the Xeon X5672 (base: 2 GHz vs 3.2 GHz). The Atom C3858 uses the Goldmont (2016−2017) architecture (14 nm), while the Xeon X5672 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Atom C3858 scores 5,040 against the Xeon X5672's 5,036 — a 0.1% lead for the Atom C3858. L3 cache: 12 MB on the Atom C3858 vs 12 MB (total) on the Xeon X5672.
| Feature | Atom C3858 | Xeon X5672 |
|---|---|---|
| Cores / Threads | 12 / 12+200% | 4 / 8 |
| Boost Clock | 2 GHz | 3.6 GHz+80% |
| Base Clock | 2 GHz | 3.2 GHz+60% |
| L3 Cache | 12 MB | 12 MB (total) |
| L2 Cache | 12 MB+4700% | 256 kB (per core) |
| Process | 14 nm-56% | 32 nm |
| Architecture | Goldmont (2016−2017) | Westmere-EP (2010−2011) |
| PassMark | 5,040 | 5,036 |
Memory & Platform
The Atom C3858 uses the FCBGA1310 socket (PCIe 3.0), while the Xeon X5672 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2400 on the Atom C3858 versus DDR3-1333 on the Xeon X5672 — the Atom C3858 supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Memory channels: 2 (Atom C3858) vs 3 (Xeon X5672). Chipset compatibility: Intel FCBGA1310 (Atom C3858) and Intel X58,Intel 5520 (Xeon X5672).
| Feature | Atom C3858 | Xeon X5672 |
|---|---|---|
| Socket | FCBGA1310 | LGA1366 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | DDR4-2400+33% | DDR3-1333 |
| Max RAM Capacity | 256 GB | — |
| RAM Channels | 2 | 3+50% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 12 | — |
Advanced Features
Virtualization: not specified (Atom C3858) / VT-x, VT-d, EPT (Xeon X5672). Primary use case: Xeon X5672 targets Workstation. Direct competitor: Xeon X5672 rivals Core i7-980X.
| Feature | Atom C3858 | Xeon X5672 |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d, EPT |
| Target Use | — | Workstation |
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