Ryzen 5 8400F vs Ryzen 7 7840U

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.

Ryzen 5 8400F vs Ryzen 7 7840U 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.

Ryzen 5 8400F vs Ryzen 7 7840U: Pros, Cons & Final Verdict

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

Ryzen 5 8400F

2024

Why buy it

✅+0% higher PassMark.
✅Costs $97 less on MSRP ($303 MSRP vs $400 MSRP).
✅Delivers 32.1% more PassMark for each dollar spent, at 81.0 vs 61.4 PassMark/$ ($303 MSRP vs $400 MSRP).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7840U across 50 shared CPU benchmark tests.
❌132.1% higher power demand at 65W vs 28W.

Ryzen 7 7840U

2023

Why buy it

✅Better for gaming: +15.0% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 28W instead of 65W, a 37W reduction.

Trade-offs

❌Lower PassMark (24,547 vs 24,554).
❌Lower PassMark per dollar, at 61.4 vs 81.0 PassMark/$ ($400 MSRP vs $303 MSRP).

Quick Answers

So, is Ryzen 5 8400F better than Ryzen 7 7840U?

It depends on what you want from the system. For gaming, Ryzen 7 7840U is ahead with a 15.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 5 8400F pulls ahead with 0% better PassMark.

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

For streaming, content creation, and heavier multitasking, Ryzen 5 8400F is the stronger fit. You are getting 0% better PassMark, backed by 6 cores and 12 threads.

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

Ryzen 5 8400F is the better buy right now. Ryzen 5 8400F comes in $97 cheaper on MSRP at $303 MSRP versus $400 MSRP, and it still gives you 0% better PassMark. The compromise is that Ryzen 7 7840U is still the better pure gaming CPU with a 15.0% average FPS lead across 50 shared CPU game tests in our data. It is also 32.1% better value on MSRP (81.0 vs 61.4 PassMark/$), 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 5 8400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2023) and more multi-core headroom with 6 cores / 12 threads instead of 8/16. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Ryzen 5 8400F vs Ryzen 7 7840U Technical Specifications

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

Ryzen 5 8400F

The Ryzen 5 8400F is manufactured by AMD. It was released in 1 April 2024 (1 year ago). It is based on the Phoenix (2023−2024) architecture. It features 6 cores and 12 threads. Base frequency is 4.2 GHz, with boost up to 4.7 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5. Passmark benchmark score: 24,554 points. Launch price was $170.

Ryzen 7 7840U

The Ryzen 7 7840U is manufactured by AMD. It was released in Maio 2023 (2 years ago). It is based on the Phoenix-U (Zen 4) (2023) architecture. It features 8 cores and 16 threads. Base frequency is 3.3 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 28 Watt. Memory support: DDR5-5600. Passmark benchmark score: 24,547 points. Launch price was $299.

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Processing Power

The Ryzen 5 8400F packs 6 cores / 12 threads, while the Ryzen 7 7840U offers 8 cores / 16 threads — the Ryzen 7 7840U has 2 more cores. Boost clocks reach 4.7 GHz on the Ryzen 5 8400F versus 5.1 GHz on the Ryzen 7 7840U — a 8.2% clock advantage for the Ryzen 7 7840U (base: 4.2 GHz vs 3.3 GHz). The Ryzen 5 8400F uses the Phoenix (2023−2024) architecture (4 nm), while the Ryzen 7 7840U uses Phoenix-U (Zen 4) (2023) (4 nm). In PassMark, the Ryzen 5 8400F scores 24,554 against the Ryzen 7 7840U's 24,547 — a 0% lead for the Ryzen 5 8400F. Both processors carry 16 MB (total) of L3 cache.

Feature	Ryzen 5 8400F	Ryzen 7 7840U
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	4.7 GHz	5.1 GHz+9%
Base Clock	4.2 GHz+27%	3.3 GHz
L3 Cache	16 MB (total)	16 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	4 nm	4 nm
Architecture	Phoenix (2023−2024)	Phoenix-U (Zen 4) (2023)
PassMark	24,554	24,547

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Memory & Platform

The Ryzen 5 8400F uses the AM5 socket (PCIe 4.0), while the Ryzen 7 7840U uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Ryzen 5 8400F	Ryzen 7 7840U
Socket	AM5	FP8
PCIe Generation	PCIe 4.0	PCIe 4.0

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Value Analysis

At launch, the Ryzen 5 8400F was priced at $303, while the Ryzen 7 7840U came in at $400. On launch pricing ($303 vs $400), Ryzen 5 8400F was $97 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 5 8400F delivers 81.0 pts/$ vs 61.4 pts/$ for the Ryzen 7 7840U — making the Ryzen 5 8400F the 27.6% better value option.

Feature	Ryzen 5 8400F	Ryzen 7 7840U
MSRP	$303-24%	$400
Performance per Dollar	81.0+32%	61.4
Release Date	2024	2023

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