Atom C3858 vs Xeon Platinum 8260L
Atom C3858
Xeon Platinum 8260L
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 Platinum 8260L is on rank 1030, 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 Platinum 8260L
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom C3858 | Xeon Platinum 8260L |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($750) |
| Longevity | ✨ Modern (Goldmont (2016−2017) / 14 nm) | ✨ Modern (Cascade Lake (2019−2020) / 14 nm) |
💎 Value Proposition
| Insight | Atom C3858 | Xeon Platinum 8260L |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($750) |
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 Platinum 8260L
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 Platinum 8260L
The Xeon Platinum 8260L is manufactured by Intel. It was released in 2 April 2019 (6 years ago). It is based on the Cascade Lake (2019−2020) architecture. It features 24 cores and 48 threads. Base frequency is 2.4 GHz, with boost up to 3.9 GHz. L3 cache: 35.75 MB. L2 cache: 24 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2933. Passmark benchmark score: 5,103 points. Launch price was $12,599.
Processing Power
The Atom C3858 packs 12 cores / 12 threads, while the Xeon Platinum 8260L offers 24 cores / 48 threads — the Xeon Platinum 8260L has 12 more cores. Boost clocks reach 2 GHz on the Atom C3858 versus 3.9 GHz on the Xeon Platinum 8260L — a 64.4% clock advantage for the Xeon Platinum 8260L (base: 2 GHz vs 2.4 GHz). The Atom C3858 uses the Goldmont (2016−2017) architecture (14 nm), while the Xeon Platinum 8260L uses Cascade Lake (2019−2020) (14 nm). In PassMark, the Atom C3858 scores 5,040 against the Xeon Platinum 8260L's 5,103 — a 1.2% lead for the Xeon Platinum 8260L. L3 cache: 12 MB on the Atom C3858 vs 35.75 MB on the Xeon Platinum 8260L.
| Feature | Atom C3858 | Xeon Platinum 8260L |
|---|---|---|
| Cores / Threads | 12 / 12 | 24 / 48+100% |
| Boost Clock | 2 GHz | 3.9 GHz+95% |
| Base Clock | 2 GHz | 2.4 GHz+20% |
| L3 Cache | 12 MB | 35.75 MB+198% |
| L2 Cache | 12 MB | 24 MB+100% |
| Process | 14 nm | 14 nm |
| Architecture | Goldmont (2016−2017) | Cascade Lake (2019−2020) |
| PassMark | 5,040 | 5,103+1% |
Memory & Platform
The Atom C3858 uses the FCBGA1310 socket (PCIe 3.0), while the Xeon Platinum 8260L uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2400 on the Atom C3858 versus 2933 on the Xeon Platinum 8260L — the Xeon Platinum 8260L supports 199.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Platinum 8260L supports up to 4608 of RAM compared to 256 GB — 178.9% more capacity for professional workloads. Memory channels: 2 (Atom C3858) vs 6 (Xeon Platinum 8260L). PCIe lanes: 12 (Atom C3858) vs 48 (Xeon Platinum 8260L) — the Xeon Platinum 8260L offers 36 more lanes for additional GPUs or NVMe drives.
| Feature | Atom C3858 | Xeon Platinum 8260L |
|---|---|---|
| Socket | FCBGA1310 | LGA3647 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2400 | 2933+73225% |
| Max RAM Capacity | 256 GB+5825322% | 4608 |
| RAM Channels | 2 | 6+200% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 12 | 48+300% |
Advanced Features
Virtualization: not specified (Atom C3858) / true (Xeon Platinum 8260L).
| Feature | Atom C3858 | Xeon Platinum 8260L |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | — | true |
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