Atom x5-E3940 vs Ryzen 7 7800X3D

Atom x5-E3940 vs Ryzen 7 7800X3D Performance Spectrum

Atom x5-E3940

4 / 4

1,816

0.0%

34,293

+1788.4%

Ryzen Threadripper PRO 7965WX

Ryzen Threadripper 7970X

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 x5-E3940 vs Ryzen 7 7800X3D 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 x5-E3940 vs Ryzen 7 7800X3D: Pros, Cons & Final Verdict

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

Atom x5-E3940

2014

Why buy it

✅Draws 10W instead of 120W, a 110W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 38 shared CPU benchmark tests.
❌Lower PassMark (1,816 vs 34,293).
❌Older platform position on FCBGA1296, while Ryzen 7 7800X3D moves to AM5 and DDR5.

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +534.6% higher average FPS across 38 shared CPU benchmark tests.
✅Newer platform on AM5 with DDR5 support instead of FCBGA1296 and older memory support.
✅366.7% more PCIe lanes (28 vs 6) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $449 MSRP, while Atom x5-E3940 mostly shows up through inconsistent older-market listings.
❌1100% higher power demand at 120W vs 10W.

Quick Answers

So, is Ryzen 7 7800X3D better than Atom x5-E3940?

Yes. Ryzen 7 7800X3D is the better all-around CPU here. It gives you a 534.6% average FPS lead across 38 shared CPU game tests in our data, 1788.4% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Ryzen 7 7800X3D is the better pick. According to our tests, it delivers 534.6% more average FPS across 38 shared CPU game tests. It also has a clear cache advantage at 96 MB versus null.

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

For streaming, content creation, and heavier multitasking, Ryzen 7 7800X3D is the stronger fit. You are getting 1788.4% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 7 7800X3D is the better buy right now. Ryzen 7 7800X3D comes in at an unclear MSRP at $449 MSRP versus unclear MSRP, and it still gives you a 534.6% average FPS lead across 38 shared CPU game tests in our data. It is also 100.0% better value on MSRP (76.4 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Ryzen 7 7800X3D makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2014), a healthier platform with AM5 and DDR5 instead of FCBGA1296, 3D V-Cache and a much larger 96 MB L3 cache instead of null, and more multi-core headroom with 8 cores / 16 threads instead of 4/4. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Atom x5-E3940 vs Ryzen 7 7800X3D Technical Specifications

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

Atom x5-E3940

The Atom x5-E3940 is manufactured by Intel. It was released in 30 August 2014 (11 years ago). It is based on the Apollo Lake (2014−2016) architecture. It features 4 cores and 4 threads. Base frequency is 1.6 GHz, with boost up to 1.8 GHz. L3 cache: 0 kB. L2 cache: 2 MB (total). Built on 14 nm process technology. Socket: FCBGA1296. Thermal design power (TDP): 10 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,816 points. Launch price was $69.

Ryzen 7 7800X3D

The Ryzen 7 7800X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 8 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5 GHz. L3 cache: 96 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 34,293 points. Launch price was $449.

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Processing Power

The Atom x5-E3940 packs 4 cores / 4 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 4 more cores. Boost clocks reach 1.8 GHz on the Atom x5-E3940 versus 5 GHz on the Ryzen 7 7800X3D — a 94.1% clock advantage for the Ryzen 7 7800X3D (base: 1.6 GHz vs 4.4 GHz). The Atom x5-E3940 uses the Apollo Lake (2014−2016) architecture (14 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Atom x5-E3940 scores 1,816 against the Ryzen 7 7800X3D's 34,293 — a 179.9% lead for the Ryzen 7 7800X3D. L3 cache: 0 kB on the Atom x5-E3940 vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	Atom x5-E3940	Ryzen 7 7800X3D
Cores / Threads	4 / 4	8 / 16+100%
Boost Clock	1.8 GHz	5 GHz+178%
Base Clock	1.6 GHz	4.4 GHz+175%
L3 Cache	0 kB	96 MB (total)
L2 Cache	2 MB (total)+100%	1 MB (per core)
Process	14 nm	5 nm-64%
Architecture	Apollo Lake (2014−2016)	Raphael (Zen4) (2022−2023)
PassMark	1,816	34,293+1788%
Cinebench R23 Multi	—	18,500
Geekbench 6 Single	—	2,700
Geekbench 6 Multi	—	15,000

🧠

Memory & Platform

The Atom x5-E3940 uses the FCBGA1296 socket (PCIe 3.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3L-1866 on the Atom x5-E3940 versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 178.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 7800X3D supports up to 128 GB of RAM compared to 8 GB — 1500% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 6 (Atom x5-E3940) vs 28 (Ryzen 7 7800X3D) — the Ryzen 7 7800X3D offers 22 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel FCBGA1296 (Atom x5-E3940) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).

Feature	Atom x5-E3940	Ryzen 7 7800X3D
Socket	FCBGA1296	AM5
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR3L-1866	DDR5-5200+179%
Max RAM Capacity	8 GB	128 GB+1500%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	6	28+367%

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Advanced Features

Virtualization: not specified (Atom x5-E3940) / AMD-V (Ryzen 7 7800X3D). Both include integrated graphics — Intel HD Graphics 500 (Atom x5-E3940) and AMD Radeon Graphics (2-core) (Ryzen 7 7800X3D) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K.