A6-6400K vs Ryzen 7 5800X

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.

A6-6400K vs Ryzen 7 5800X 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.

A6-6400K vs Ryzen 7 5800X: Pros, Cons & Final Verdict

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

A6-6400K

2013

Why buy it

✅Draws 65W instead of 105W, a 40W reduction.
✅Integrated graphics onboard with Radeon HD 8470D, while Ryzen 7 5800X needs a discrete GPU.
✅Includes a boxed cooler (true), unlike Ryzen 7 5800X.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 5800X across 50 shared CPU benchmark tests.
❌Lower PassMark (1,511 vs 27,712).

Ryzen 7 5800X

2020

Why buy it

✅Better for gaming: +535.2% higher average FPS across 50 shared CPU benchmark tests.
✅50% more PCIe lanes (24 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $449 MSRP, while A6-6400K mostly shows up through inconsistent older-market listings.
❌61.5% higher power demand at 105W vs 65W.
❌No integrated graphics, while A6-6400K can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike A6-6400K.

Quick Answers

So, is Ryzen 7 5800X better than A6-6400K?

Yes. Ryzen 7 5800X is the better all-around CPU here. It gives you a 535.2% average FPS lead across 50 shared CPU game tests in our data, 1734% 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 5800X is the better pick. According to our tests, it delivers 535.2% 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, Ryzen 7 5800X is the stronger fit. You are getting 1734% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 7 5800X is the better buy right now. Ryzen 7 5800X comes in at an unclear MSRP at $449 MSRP versus unclear MSRP, and it still gives you a 535.2% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (61.7 vs 0.0 PassMark/$), 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 5800X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2013) and more multi-core headroom with 8 cores / 16 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

A6-6400K vs Ryzen 7 5800X Technical Specifications

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

A6-6400K

The A6-6400K is manufactured by AMD. It was released in 2014-01-01. It is based on the Richland (2013−2014) architecture. It features 2 cores and 2 threads. Base frequency is 3.9 GHz, with boost up to 4.1 GHz. L3 cache: 0 kB. L2 cache: 1024 kB. Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,511 points. Launch price was $70.

Ryzen 7 5800X

The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 27,712 points. Launch price was $449.

⚡

Processing Power

The A6-6400K packs 2 cores / 2 threads, while the Ryzen 7 5800X offers 8 cores / 16 threads — the Ryzen 7 5800X has 6 more cores. Boost clocks reach 4.1 GHz on the A6-6400K versus 4.7 GHz on the Ryzen 7 5800X — a 13.6% clock advantage for the Ryzen 7 5800X (base: 3.9 GHz vs 3.8 GHz). The A6-6400K uses the Richland (2013−2014) architecture (32 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the A6-6400K scores 1,511 against the Ryzen 7 5800X's 27,712 — a 179.3% lead for the Ryzen 7 5800X. L3 cache: 0 kB on the A6-6400K vs 32 MB on the Ryzen 7 5800X.

Feature	A6-6400K	Ryzen 7 5800X
Cores / Threads	2 / 2	8 / 16+300%
Boost Clock	4.1 GHz	4.7 GHz+15%
Base Clock	3.9 GHz+3%	3.8 GHz
L3 Cache	0 kB	32 MB
L2 Cache	1024 kB+100%	512K (per core)
Process	32 nm	7 nm, 12 nm-78%
Architecture	Richland (2013−2014)	Vermeer (Zen 3) (2020−2022)
PassMark	1,511	27,712+1734%

🧠

Memory & Platform

The A6-6400K uses the FM2 socket (PCIe 3.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1866 on the A6-6400K versus DDR4-3200 on the Ryzen 7 5800X — the Ryzen 7 5800X supports 71.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 5800X supports up to 128 GB of RAM compared to 32 GB — 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (A6-6400K) vs 24 (Ryzen 7 5800X) — the Ryzen 7 5800X offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FM2 (A6-6400K) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 5800X).

Feature	A6-6400K	Ryzen 7 5800X
Socket	FM2	AM4
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	1866	DDR4-3200+71%
Max RAM Capacity	32 GB	128 GB+300%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	24+50%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Virtualization support: true (A6-6400K) vs AMD-V (Ryzen 7 5800X). The A6-6400K includes integrated graphics (Radeon HD 8470D), while the Ryzen 7 5800X requires a dedicated GPU. Primary use case: Ryzen 7 5800X targets Desktop. Direct competitor: A6-6400K rivals Pentium G3258.