CPU
GPU
Xeon X5677
Atom C3858
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 Xeon X5677 is positioned at rank 550 and the Atom C3858 is on rank 310, 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 Xeon X5677
Performance Per Dollar Atom C3858
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon X5677 | Atom C3858 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Westmere-EP (2010−2011) / 32 nm) | ✨ Modern (Goldmont (2016−2017) / 14 nm) |
💎 Value Proposition
| Insight | Xeon X5677 | Atom C3858 |
|---|---|---|
| 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 Xeon X5677 and Atom C3858
Xeon X5677
The Xeon X5677 is manufactured by Intel. It was released in 16 March 2010 (15 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 4 cores and 8 threads. Base frequency is 3.46 GHz, with boost up to 3.73 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 5,054 points. Launch price was $350.
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.
Processing Power
The Xeon X5677 packs 4 cores / 8 threads, while the Atom C3858 offers 12 cores / 12 threads — the Atom C3858 has 8 more cores. Boost clocks reach 3.73 GHz on the Xeon X5677 versus 2 GHz on the Atom C3858 — a 60.4% clock advantage for the Xeon X5677 (base: 3.46 GHz vs 2 GHz). The Xeon X5677 uses the Westmere-EP (2010−2011) architecture (32 nm), while the Atom C3858 uses Goldmont (2016−2017) (14 nm). In PassMark, the Xeon X5677 scores 5,054 against the Atom C3858's 5,040 — a 0.3% lead for the Xeon X5677. L3 cache: 12 MB (total) on the Xeon X5677 vs 12 MB on the Atom C3858.
| Feature | Xeon X5677 | Atom C3858 |
|---|---|---|
| Cores / Threads | 4 / 8 | 12 / 12+200% |
| Boost Clock | 3.73 GHz+87% | 2 GHz |
| Base Clock | 3.46 GHz+73% | 2 GHz |
| L3 Cache | 12 MB (total) | 12 MB |
| L2 Cache | 256 kB (per core) | 12 MB+4700% |
| Process | 32 nm | 14 nm-56% |
| Architecture | Westmere-EP (2010−2011) | Goldmont (2016−2017) |
| PassMark | 5,054 | 5,040 |
Memory & Platform
The Xeon X5677 uses the LGA1366 socket (PCIe 2.0), while the Atom C3858 uses FCBGA1310 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Xeon X5677 versus DDR4-2400 on the Atom C3858 — the Atom C3858 supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Memory channels: 3 (Xeon X5677) vs 2 (Atom C3858). Chipset compatibility: Intel X58,Intel 5520 (Xeon X5677) and Intel FCBGA1310 (Atom C3858).
| Feature | Xeon X5677 | Atom C3858 |
|---|---|---|
| Socket | LGA1366 | FCBGA1310 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1333 | DDR4-2400+33% |
| Max RAM Capacity | — | 256 GB |
| RAM Channels | 3+50% | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | — | 12 |
Advanced Features
Virtualization: VT-x, VT-d, EPT (Xeon X5677) / not specified (Atom C3858). Primary use case: Xeon X5677 targets Workstation. Direct competitor: Xeon X5677 rivals Core i7-980X.
| Feature | Xeon X5677 | Atom C3858 |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d, EPT | — |
| Target Use | Workstation | — |
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