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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Ryzen 7 7840S

2023

Why buy it

✅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

❌250% higher power demand at 28W vs 8W.
❌No integrated graphics, while Ryzen 7 7840S can still boot and troubleshoot without a discrete GPU.

Ryzen 7 7840S

2023

Ryzen 7 8840U

2023

Why buy it

✅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.

Why buy it

✅+0.5% higher PassMark.

Trade-offs

❌Lower PassMark (23,290 vs 23,415).

Trade-offs

❌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?

Yes. Ryzen 7 8840U is the better overall CPU here. You are getting a 0.9% average FPS lead across 4 shared CPU game tests in our data, 0.5% better PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

For gaming, the two CPUs are effectively a wash in the available data.

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

For streaming, content creation, and heavier multitasking, Ryzen 7 8840U is the better 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 looks like the safer overall buy. Ryzen 7 8840U is at an unclear MSRP at unclear MSRP versus unclear MSRP, and it gives you a 0.9% average FPS lead across 4 shared CPU game tests in our data.

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

Ryzen 7 8840U is the more future-proof choice for 2026 and beyond. You are getting more multi-core headroom with 8 cores / 16 threads instead of 8/16. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Ryzen 7 7840S Benchmark Check

Ryzen 7 8840U Benchmark Check

Path of Exile 2

Preset	Ryzen 7 7840S	Ryzen 7 8840U
1080p
low	269 FPS	255 FPS
medium	243 FPS	235 FPS
high	204 FPS	198 FPS
ultra	176 FPS	170 FPS
1440p
low	236 FPS	227 FPS
medium	193 FPS	189 FPS
high	157 FPS	154 FPS
ultra	139 FPS	136 FPS
4K
low	164 FPS	157 FPS
medium	136 FPS	133 FPS
high	105 FPS	103 FPS
ultra	92 FPS	91 FPS

Open Ryzen 7 7840S Open Ryzen 7 8840U

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 7 7840S	Ryzen 7 8840U
1080p
low	509 FPS	468 FPS
medium	419 FPS	388 FPS
high	361 FPS	336 FPS
ultra	322 FPS	301 FPS
1440p
low	445 FPS	409 FPS
medium	386 FPS	358 FPS
high	332 FPS	310 FPS
ultra	283 FPS	265 FPS
4K
low	293 FPS	269 FPS
medium	266 FPS	247 FPS
high	251 FPS	234 FPS
ultra	216 FPS	202 FPS

Open Ryzen 7 7840S Open Ryzen 7 8840U

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 7 7840S	Ryzen 7 8840U
1080p
low	582 FPS	585 FPS
medium	582 FPS	585 FPS
high	582 FPS	585 FPS
ultra	546 FPS	585 FPS
1440p
low	582 FPS	585 FPS
medium	582 FPS	585 FPS
high	541 FPS	525 FPS
ultra	464 FPS	451 FPS
4K
low	541 FPS	521 FPS
medium	473 FPS	458 FPS
high	419 FPS	406 FPS
ultra	355 FPS	345 FPS

Open Ryzen 7 7840S Open Ryzen 7 8840U

League of Legends

League of Legends

Valorant

Preset	Ryzen 7 7840S	Ryzen 7 8840U
1080p
low	582 FPS	585 FPS
medium	582 FPS	585 FPS
high	582 FPS	585 FPS
ultra	582 FPS	585 FPS
1440p
low	582 FPS	585 FPS
medium	582 FPS	585 FPS
high	582 FPS	585 FPS
ultra	573 FPS	548 FPS
4K
low	572 FPS	559 FPS
medium	511 FPS	501 FPS
high	457 FPS	446 FPS
ultra	394 FPS	384 FPS

Open Ryzen 7 7840S Open Ryzen 7 8840U

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 7 7840S and Ryzen 7 8840U

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.