Atom C3808 vs Opteron 6366 HE

Atom C3808 vs Opteron 6366 HE Performance Spectrum

Atom C3808

12 / 12

5,671

+1.0%

5,613

0.0%

Ryzen Embedded R1305G

Ryzen Threadripper PRO 3975WX

Ryzen Threadripper PRO 7965WX

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.

Atom C3808 vs Opteron 6366 HE 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 Opteron 6366 HE: 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: +6.1% higher average FPS across 50 shared CPU benchmark tests.
✅+50% larger total L3 cache (12 MB vs 8 MB).
✅Draws 25W instead of 85W, a 60W reduction.
✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Less compelling for workstation-style loads than Opteron 6366 HE, which brings 16 cores / 16 threads.

Opteron 6366 HE

2012

Why buy it

✅Better for workstations and heavier parallel workloads: 16 cores / 16 threads.

Trade-offs

❌Worse for gaming: lower average FPS than Atom C3808 across 50 shared CPU benchmark tests.
❌Lower PassMark (5,613 vs 5,671).
❌Smaller total L3 cache (8 MB vs 12 MB).
❌240% higher power demand at 85W vs 25W.

Quick Answers

So, is Atom C3808 better than Opteron 6366 HE?

Not really, because they are built for different jobs. Opteron 6366 HE 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 6.1% 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% 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 6.1% 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 2012), 50% larger total L3 cache (12 MB vs 8 MB), and more multi-core headroom with 12 cores / 12 threads instead of 16/16. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Atom C3808 vs Opteron 6366 HE 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.

Opteron 6366 HE

The Opteron 6366 HE is manufactured by AMD. It was released in 2015-01-01. It is based on the Abu Dhabi (2012) architecture. It features 16 cores and 16 threads. Base frequency is 1.8 GHz, with boost up to 3.1 GHz. L3 cache: 8 MB (total). L2 cache: 16 MB. Built on 32 nm process technology. Socket: G34. Thermal design power (TDP): 85 Watt. Memory support: DDR3. Passmark benchmark score: 5,613 points. Launch price was $800.

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Processing Power

The Atom C3808 packs 12 cores / 12 threads, while the Opteron 6366 HE offers 16 cores / 16 threads — the Opteron 6366 HE has 4 more cores. Boost clocks reach 2 GHz on the Atom C3808 versus 3.1 GHz on the Opteron 6366 HE — a 43.1% clock advantage for the Opteron 6366 HE (base: 2 GHz vs 1.8 GHz). The Atom C3808 uses the Goldmont (2016−2017) architecture (14 nm), while the Opteron 6366 HE uses Abu Dhabi (2012) (32 nm). In PassMark, the Atom C3808 scores 5,671 against the Opteron 6366 HE's 5,613 — a 1% lead for the Atom C3808. L3 cache: 12 MB on the Atom C3808 vs 8 MB (total) on the Opteron 6366 HE.

Feature	Atom C3808	Opteron 6366 HE
Cores / Threads	12 / 12	16 / 16+33%
Boost Clock	2 GHz	3.1 GHz+55%
Base Clock	2 GHz+11%	1.8 GHz
L3 Cache	12 MB+50%	8 MB (total)
L2 Cache	12 MB	16 MB+33%
Process	14 nm-56%	32 nm
Architecture	Goldmont (2016−2017)	Abu Dhabi (2012)
PassMark	5,671+1%	5,613

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Memory & Platform

The Atom C3808 uses the FCBGA1310 socket (PCIe 3.0), while the Opteron 6366 HE uses G34 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Atom C3808	Opteron 6366 HE
Socket	FCBGA1310	G34
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	—