Atom x7405C vs Ryzen 7 7800X3D

Atom x7405C vs Ryzen 7 7800X3D Performance Spectrum

Atom x7405C

4 / 4

5,218

0.0%

34,293

+557.2%

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 x7405C 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 x7405C 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 x7405C

2024

Why buy it

✅Draws 12W instead of 120W, a 108W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 37 shared CPU benchmark tests.
❌Lower PassMark (5,218 vs 34,293).

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +224.1% higher average FPS across 37 shared CPU benchmark tests.
✅211.1% more PCIe lanes (28 vs 9) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $449 MSRP, while Atom x7405C mostly shows up through inconsistent older-market listings.
❌900% higher power demand at 120W vs 12W.

Quick Answers

So, is Ryzen 7 7800X3D better than Atom x7405C?

Yes. Ryzen 7 7800X3D is the better all-around CPU here. It gives you a 224.1% average FPS lead across 37 shared CPU game tests in our data, 557.2% 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 224.1% more average FPS across 37 shared CPU game tests. It also has a clear cache advantage at 96 MB versus 6 MB.

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 557.2% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 1500% larger total L3 cache (96 MB vs 6 MB).

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 $449 MSRP versus unclear MSRP, and it still gives you a 224.1% average FPS lead across 37 shared CPU game tests in our data. It is also 100.0% better value on MSRP (76.4 vs 0.0 PassMark/$), 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 3D V-Cache and a much larger 96 MB L3 cache instead of 6 MB and more multi-core headroom with 8 cores / 16 threads instead of 4/4. That extra cache should keep paying off in CPU-limited games and high-refresh builds.

Atom x7405C vs Ryzen 7 7800X3D Technical Specifications

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

Atom x7405C

The Atom x7405C is manufactured by Intel. It was released in 8 April 2024 (1 year ago). It is based on the Amston Lake (2024−2025) architecture. It features 4 cores and 4 threads. Base frequency is 1.7 GHz, with boost up to 3.4 GHz. L3 cache: 6 MB (total). L2 cache: 2 MB (total). Built on 10 nm process technology. Socket: FCBGA1264. Thermal design power (TDP): 12 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 5,218 points. Launch price was $57.

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 x7405C 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 3.4 GHz on the Atom x7405C versus 5 GHz on the Ryzen 7 7800X3D — a 38.1% clock advantage for the Ryzen 7 7800X3D (base: 1.7 GHz vs 4.4 GHz). The Atom x7405C uses the Amston Lake (2024−2025) architecture (10 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Atom x7405C scores 5,218 against the Ryzen 7 7800X3D's 34,293 — a 147.2% lead for the Ryzen 7 7800X3D. L3 cache: 6 MB (total) on the Atom x7405C vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	Atom x7405C	Ryzen 7 7800X3D
Cores / Threads	4 / 4	8 / 16+100%
Boost Clock	3.4 GHz	5 GHz+47%
Base Clock	1.7 GHz	4.4 GHz+159%
L3 Cache	6 MB (total)	96 MB (total)+1500%
L2 Cache	2 MB (total)+100%	1 MB (per core)
Process	10 nm	5 nm-50%
Architecture	Amston Lake (2024−2025)	Raphael (Zen4) (2022−2023)
PassMark	5,218	34,293+557%
Cinebench R23 Multi	—	18,500
Geekbench 6 Single	—	2,700
Geekbench 6 Multi	—	15,000

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Memory & Platform

The Atom x7405C uses the FCBGA1264 socket (PCIe 4.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800 on the Atom x7405C versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 8.3% 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 16 GB — 700% more capacity for professional workloads. Memory channels: 1 (Atom x7405C) vs 2 (Ryzen 7 7800X3D). PCIe lanes: 9 (Atom x7405C) vs 28 (Ryzen 7 7800X3D) — the Ryzen 7 7800X3D offers 19 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel BGA1264 (Atom x7405C) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).

Feature	Atom x7405C	Ryzen 7 7800X3D
Socket	FCBGA1264	AM5
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR5-4800	DDR5-5200+8%
Max RAM Capacity	16 GB	128 GB+700%
RAM Channels	1	2+100%
ECC Support	No	Yes
PCIe Lanes	9	28+211%

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Advanced Features

Virtualization: not specified (Atom x7405C) / AMD-V (Ryzen 7 7800X3D). Both include integrated graphics — Intel UHD Graphics (Atom x7405C) 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.