Atom C3955 vs Xeon E-2104G

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 C3955 vs Xeon E-2104G 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 C3955 vs Xeon E-2104G: Pros, Cons & Final Verdict

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

Atom C3955

2017

Why buy it

✅Better for gaming: +33.9% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (16 MB vs 8 MB).
✅Draws 32W instead of 65W, a 33W reduction.
✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (5,803 vs 5,858).

Xeon E-2104G

2018

Why buy it

✅+0.9% higher PassMark.

Trade-offs

❌Worse for gaming: lower average FPS than Atom C3955 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (8 MB vs 16 MB).
❌Launch MSRP is still $193 MSRP, while Atom C3955 mostly shows up through inconsistent older-market listings.
❌103.1% higher power demand at 65W vs 32W.

Quick Answers

So, is Xeon E-2104G better than Atom C3955?

Not really, because they are built for different jobs. Xeon E-2104G makes more sense for workstation-style multi-core throughput, while Atom C3955 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 E-2104G is the stronger fit. You are getting 0.9% better PassMark, backed by 4 cores and 4 threads.

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

Xeon E-2104G is the better buy right now. Xeon E-2104G comes in at an unclear MSRP at $193 MSRP versus unclear MSRP, and it still gives you 0.9% better PassMark. The compromise is that Atom C3955 is still the better pure gaming CPU with a 33.9% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (30.4 vs 0.0 PassMark/$), 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 E-2104G makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2017) and more multi-core headroom with 4 cores / 4 threads instead of 16/16. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Atom C3955 vs Xeon E-2104G Technical Specifications

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

Atom C3955

The Atom C3955 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 16 cores and 16 threads. Base frequency is 2.1 GHz, with boost up to 2.4 GHz. L3 cache: 16 MB. L2 cache: 16 MB. Built on 14 nm process technology. Socket: FCBGA1310. Thermal design power (TDP): 32 Watt. Memory support: DDR4: 2400. Passmark benchmark score: 5,803 points. Launch price was $434.

Xeon E-2104G

The Xeon E-2104G is manufactured by Intel. It was released in 12 July 2018 (7 years ago). It is based on the Coffee Lake-S WS (2018−2019) architecture. It features 4 cores and 4 threads. Base frequency is 3.2 GHz, with boost up to 3.2 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 65 Watt. Memory support: DDR4-2666. Passmark benchmark score: 5,858 points. Launch price was $193.

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Processing Power

The Atom C3955 packs 16 cores / 16 threads, while the Xeon E-2104G offers 4 cores / 4 threads — the Atom C3955 has 12 more cores. Boost clocks reach 2.4 GHz on the Atom C3955 versus 3.2 GHz on the Xeon E-2104G — a 28.6% clock advantage for the Xeon E-2104G (base: 2.1 GHz vs 3.2 GHz). The Atom C3955 uses the Goldmont (2016−2017) architecture (14 nm), while the Xeon E-2104G uses Coffee Lake-S WS (2018−2019) (14 nm). In PassMark, the Atom C3955 scores 5,803 against the Xeon E-2104G's 5,858 — a 0.9% lead for the Xeon E-2104G. L3 cache: 16 MB on the Atom C3955 vs 8 MB (total) on the Xeon E-2104G.

Feature	Atom C3955	Xeon E-2104G
Cores / Threads	16 / 16+300%	4 / 4
Boost Clock	2.4 GHz	3.2 GHz+33%
Base Clock	2.1 GHz	3.2 GHz+52%
L3 Cache	16 MB+100%	8 MB (total)
L2 Cache	16 MB+6300%	256 kB (per core)
Process	14 nm	14 nm
Architecture	Goldmont (2016−2017)	Coffee Lake-S WS (2018−2019)
PassMark	5,803	5,858

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Memory & Platform

The Atom C3955 uses the FCBGA1310 socket (PCIe 3.0), while the Xeon E-2104G uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Atom C3955	Xeon E-2104G
Socket	FCBGA1310	LGA1151
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	—