Atom C3808 vs Xeon E3-1280

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 C3808 vs Xeon E3-1280 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 C3808 vs Xeon E3-1280: Pros, Cons & Final Verdict

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

Atom C3808

2017

Why buy it

✅Better for gaming: +10.8% higher average FPS across 50 shared CPU benchmark tests.
✅+50% larger total L3 cache (12 MB vs 8 MB).
✅Draws 25W instead of 95W, a 70W reduction.
✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Xeon E3-1280

2011

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Atom C3808 across 50 shared CPU benchmark tests.
❌Lower PassMark (5,612 vs 5,671).
❌Smaller total L3 cache (8 MB vs 12 MB).
❌280% higher power demand at 95W vs 25W.

Quick Answers

So, is Atom C3808 better than Xeon E3-1280?

Not really, because they are built for different jobs. Xeon E3-1280 makes more sense for workstation-style multi-core throughput, while Atom C3808 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Atom C3808 is the better pick. According to our tests, it delivers 10.8% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Atom C3808 is the stronger fit. You are getting 1.1% better PassMark, backed by 12 cores and 12 threads. It also has the larger cache pool with 50% larger total L3 cache (12 MB vs 8 MB).

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

Atom C3808 still makes the most sense overall. Atom C3808 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 10.8% average FPS lead across 50 shared CPU game tests in our data.

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

Atom C3808 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2017 vs 2011), 50% larger total L3 cache (12 MB vs 8 MB), and more multi-core headroom with 12 cores / 12 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Atom C3808 vs Xeon E3-1280 Technical Specifications

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

Atom C3808

The Atom C3808 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: 2133. Passmark benchmark score: 5,671 points. Launch price was $369.

Xeon E3-1280

The Xeon E3-1280 is manufactured by Intel. It was released in 3 April 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 4 cores and 8 threads. Base frequency is 3.5 GHz, with boost up to 3.9 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 5,612 points. Launch price was $450.

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Processing Power

The Atom C3808 packs 12 cores / 12 threads, while the Xeon E3-1280 offers 4 cores / 8 threads — the Atom C3808 has 8 more cores. Boost clocks reach 2 GHz on the Atom C3808 versus 3.9 GHz on the Xeon E3-1280 — a 64.4% clock advantage for the Xeon E3-1280 (base: 2 GHz vs 3.5 GHz). The Atom C3808 uses the Goldmont (2016−2017) architecture (14 nm), while the Xeon E3-1280 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Atom C3808 scores 5,671 against the Xeon E3-1280's 5,612 — a 1% lead for the Atom C3808. L3 cache: 12 MB on the Atom C3808 vs 8 MB (total) on the Xeon E3-1280.

Feature	Atom C3808	Xeon E3-1280
Cores / Threads	12 / 12+200%	4 / 8
Boost Clock	2 GHz	3.9 GHz+95%
Base Clock	2 GHz	3.5 GHz+75%
L3 Cache	12 MB+50%	8 MB (total)
L2 Cache	12 MB+4700%	256 kB (per core)
Process	14 nm-56%	32 nm
Architecture	Goldmont (2016−2017)	Sandy Bridge (2011−2013)
PassMark	5,671+1%	5,612

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Memory & Platform

The Atom C3808 uses the FCBGA1310 socket (PCIe 3.0), while the Xeon E3-1280 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Atom C3808	Xeon E3-1280
Socket	FCBGA1310	LGA1155
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR4-2133	—
Max RAM Capacity	256 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	12	—