Atom C3858 vs Xeon W-2102

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.

Atom C3858 vs Xeon W-2102 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Atom C3858 vs Xeon W-2102: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Atom C3858

2017

Why buy it

✅Better for gaming: +23.5% higher average FPS across 50 shared CPU benchmark tests.
✅+45.5% larger total L3 cache (12 MB vs 8.3 MB).
✅Draws 25W instead of 120W, a 95W reduction.
✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (5,040 vs 5,098).

Xeon W-2102

2017

Why buy it

✅+1.2% higher PassMark.

Trade-offs

❌Worse for gaming: lower average FPS than Atom C3858 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (8.3 MB vs 12 MB).
❌Launch MSRP is still $202 MSRP, while Atom C3858 mostly shows up through inconsistent older-market listings.
❌380% higher power demand at 120W vs 25W.

Quick Answers

So, is Xeon W-2102 better than Atom C3858?

Not really, because they are built for different jobs. Xeon W-2102 makes more sense for workstation-style multi-core throughput, while Atom C3858 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon W-2102 is the stronger fit. You are getting 1.2% better PassMark, backed by 4 cores and 4 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Xeon W-2102 is the better buy right now. Xeon W-2102 comes in at an unclear MSRP at $202 MSRP versus unclear MSRP, and it still gives you 1.2% better PassMark. The compromise is that Atom C3858 is still the better pure gaming CPU with a 23.5% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (25.2 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

Which one is more future-proof for 2026 and beyond?

Xeon W-2102 is the safer long-term CPU choice because it gives you more room to grow and a better platform outlook.

Atom C3858 vs Xeon W-2102 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

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 W-2102

The Xeon W-2102 is manufactured by Intel. It was released in 29 August 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 4 cores and 4 threads. Base frequency is 2.9 GHz, with boost up to 2.9 GHz. L3 cache: 8.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 120 Watt. Memory support: DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400. Passmark benchmark score: 5,098 points. Launch price was $202.

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Processing Power

The Atom C3858 packs 12 cores / 12 threads, while the Xeon W-2102 offers 4 cores / 4 threads — the Atom C3858 has 8 more cores. Boost clocks reach 2 GHz on the Atom C3858 versus 2.9 GHz on the Xeon W-2102 — a 36.7% clock advantage for the Xeon W-2102 (base: 2 GHz vs 2.9 GHz). The Atom C3858 uses the Goldmont (2016−2017) architecture (14 nm), while the Xeon W-2102 uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Atom C3858 scores 5,040 against the Xeon W-2102's 5,098 — a 1.1% lead for the Xeon W-2102. L3 cache: 12 MB on the Atom C3858 vs 8.25 MB (total) on the Xeon W-2102.

Feature	Atom C3858	Xeon W-2102
Cores / Threads	12 / 12+200%	4 / 4
Boost Clock	2 GHz	2.9 GHz+45%
Base Clock	2 GHz	2.9 GHz+45%
L3 Cache	12 MB+45%	8.25 MB (total)
L2 Cache	12 MB+1100%	1 MB (per core)
Process	14 nm	14 nm
Architecture	Goldmont (2016−2017)	Skylake (server) (2017−2018)
PassMark	5,040	5,098+1%

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Memory & Platform

The Atom C3858 uses the FCBGA1310 socket (PCIe 3.0), while the Xeon W-2102 uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Atom C3858	Xeon W-2102
Socket	FCBGA1310	LGA2066
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2400	—
Max RAM Capacity	256 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	12	—