Ryzen 7 7840S vs Ryzen 7 8840U

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 7 7840S vs Ryzen 7 8840U 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 7 7840S vs Ryzen 7 8840U: Pros, Cons & Final Verdict

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

Ryzen 7 7840S

2023

Why buy it

✅Better for gaming: +3.1% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 8W instead of 28W, a 20W reduction.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon 780M, while Ryzen 7 8840U needs a discrete GPU.

Trade-offs

❌Lower PassMark (23,290 vs 23,415).

Ryzen 7 8840U

2023

Why buy it

✅+0.5% higher PassMark.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7840S across 50 shared CPU benchmark tests.
❌250% higher power demand at 28W vs 8W.
❌No integrated graphics, while Ryzen 7 7840S can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Ryzen 7 8840U better than Ryzen 7 7840S?

It depends on what you want from the system. For gaming, Ryzen 7 7840S is ahead with a 3.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 7 8840U pulls ahead with 0.5% better PassMark.

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

For streaming, content creation, and heavier multitasking, Ryzen 7 8840U is the stronger fit. You are getting 0.5% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 7 8840U still makes the most sense overall. Ryzen 7 8840U comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.5% better PassMark.

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

Ryzen 7 8840U makes more sense long term for 2026 and beyond. You are getting more multi-core headroom with 8 cores / 16 threads instead of 8/16. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Ryzen 7 7840S vs Ryzen 7 8840U Technical Specifications

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

Ryzen 7 7840S

The Ryzen 7 7840S is manufactured by AMD. It was released in 5 January 2023 (2 years ago). It is based on the Phoenix-HS (Zen 4) (2023) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB. L2 cache: 8 MB. Built on 4 nm process technology. Socket: FP7/FP7r2/FP8. Thermal design power (TDP): 8 MB + 16 MB. Memory support: DDR5. Passmark benchmark score: 23,290 points. Launch price was $299.

Ryzen 7 8840U

The Ryzen 7 8840U is manufactured by AMD. It was released in 6 December 2023 (1 year ago). It is based on the Hawk Point-U (Zen 4) (2023−2025) 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. Passmark benchmark score: 23,415 points. Launch price was $299.

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Processing Power

Both the Ryzen 7 7840S and Ryzen 7 8840U share an identical 8-core/16-thread configuration. Boost clocks reach 5.1 GHz on the Ryzen 7 7840S versus 5.1 GHz on the Ryzen 7 8840U — identical boost frequencies (base: 3.8 GHz vs 3.3 GHz). The Ryzen 7 7840S uses the Phoenix-HS (Zen 4) (2023) architecture (4 nm), while the Ryzen 7 8840U uses Hawk Point-U (Zen 4) (2023−2025) (4 nm). In PassMark, the Ryzen 7 7840S scores 23,290 against the Ryzen 7 8840U's 23,415 — a 0.5% lead for the Ryzen 7 8840U. L3 cache: 16 MB on the Ryzen 7 7840S vs 16 MB (total) on the Ryzen 7 8840U.

Feature	Ryzen 7 7840S	Ryzen 7 8840U
Cores / Threads	8 / 16	8 / 16
Boost Clock	5.1 GHz	5.1 GHz
Base Clock	3.8 GHz+15%	3.3 GHz
L3 Cache	16 MB	16 MB (total)
L2 Cache	8 MB+700%	1 MB (per core)
Process	4 nm	4 nm
Architecture	Phoenix-HS (Zen 4) (2023)	Hawk Point-U (Zen 4) (2023−2025)
PassMark	23,290	23,415
Cinebench R23 Multi	13,500	—
Geekbench 6 Single	2,570	—
Geekbench 6 Multi	13,535	—

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Memory & Platform

The Ryzen 7 7840S uses the FP7/FP7r2/FP8 socket (PCIe 4.0), while the Ryzen 7 8840U uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Ryzen 7 7840S	Ryzen 7 8840U
Socket	FP7/FP7r2/FP8	FP8
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR5-5600, LPDDR5x-7500	—
Max RAM Capacity	256 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	20	—

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Advanced Features

Virtualization: AMD-V (SVM) (Ryzen 7 7840S) / not specified (Ryzen 7 8840U). The Ryzen 7 7840S includes integrated graphics (Radeon 780M), while the Ryzen 7 8840U requires a dedicated GPU. Primary use case: Ryzen 7 7840S targets Gaming. Direct competitor: Ryzen 7 7840S rivals Core i7-1360P.