Ryzen 5 PRO 8645HS vs Ryzen 7 7840S

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 5 PRO 8645HS

2024

Why buy it

Trade-offs

❌Lower PassMark (23,227 vs 23,290).
❌462.5% higher power demand at 45W vs 8W.
❌No integrated graphics, while Ryzen 7 7840S can still boot and troubleshoot without a discrete GPU.

Ryzen 7 7840S

2023

Why buy it

✅Draws 8W instead of 45W, a 37W reduction.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon 780M, while Ryzen 5 PRO 8645HS needs a discrete GPU.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Ryzen 5 PRO 8645HS

2024

Ryzen 7 7840S

2023

Why buy it

✅Draws 8W instead of 45W, a 37W reduction.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon 780M, while Ryzen 5 PRO 8645HS needs a discrete GPU.

Trade-offs

❌Lower PassMark (23,227 vs 23,290).
❌462.5% higher power demand at 45W vs 8W.
❌No integrated graphics, while Ryzen 7 7840S can still boot and troubleshoot without a discrete GPU.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Ryzen 7 7840S better than Ryzen 5 PRO 8645HS?

Yes. Ryzen 7 7840S is the better overall CPU here. You are getting a 0.9% average FPS lead across 4 shared CPU game tests in our data and 0.3% better PassMark, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen 7 7840S is the better pick here. According to our tests, it delivers 0.9% more average FPS across 4 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 7 7840S is the better fit. You are getting 0.3% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 7 7840S still looks like the safer overall buy. Ryzen 7 7840S 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 5 PRO 8645HS is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2023). That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

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 5 PRO 8645HS Benchmark Check

Ryzen 7 7840S Benchmark Check

Path of Exile 2

Preset	Ryzen 5 PRO 8645HS	Ryzen 7 7840S
1080p
low	265 FPS	269 FPS
medium	239 FPS	243 FPS
high	204 FPS	204 FPS
ultra	174 FPS	176 FPS
1440p
low	232 FPS	236 FPS
medium	190 FPS	193 FPS
high	157 FPS	157 FPS
ultra	137 FPS	139 FPS
4K
low	158 FPS	164 FPS
medium	130 FPS	136 FPS
high	102 FPS	105 FPS
ultra	88 FPS	92 FPS

Open Ryzen 5 PRO 8645HS Open Ryzen 7 7840S

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 5 PRO 8645HS	Ryzen 7 7840S
1080p
low	426 FPS	509 FPS
medium	358 FPS	419 FPS
high	314 FPS	361 FPS
ultra	275 FPS	322 FPS
1440p
low	371 FPS	445 FPS
medium	325 FPS	386 FPS
high	288 FPS	332 FPS
ultra	244 FPS	283 FPS
4K
low	268 FPS	293 FPS
medium	240 FPS	266 FPS
high	224 FPS	251 FPS
ultra	187 FPS	216 FPS

Open Ryzen 5 PRO 8645HS Open Ryzen 7 7840S

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 5 PRO 8645HS	Ryzen 7 7840S
1080p
low	581 FPS	582 FPS
medium	581 FPS	582 FPS
high	581 FPS	582 FPS
ultra	581 FPS	546 FPS
1440p
low	581 FPS	582 FPS
medium	581 FPS	582 FPS
high	522 FPS	541 FPS
ultra	446 FPS	464 FPS
4K
low	492 FPS	541 FPS
medium	431 FPS	473 FPS
high	369 FPS	419 FPS
ultra	303 FPS	355 FPS

Open Ryzen 5 PRO 8645HS Open Ryzen 7 7840S

League of Legends

League of Legends

Valorant

Preset	Ryzen 5 PRO 8645HS	Ryzen 7 7840S
1080p
low	581 FPS	582 FPS
medium	581 FPS	582 FPS
high	581 FPS	582 FPS
ultra	581 FPS	582 FPS
1440p
low	581 FPS	582 FPS
medium	581 FPS	582 FPS
high	581 FPS	582 FPS
ultra	581 FPS	573 FPS
4K
low	581 FPS	572 FPS
medium	548 FPS	511 FPS
high	490 FPS	457 FPS
ultra	426 FPS	394 FPS

Open Ryzen 5 PRO 8645HS Open Ryzen 7 7840S

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 5 PRO 8645HS and Ryzen 7 7840S

Ryzen 5 PRO 8645HS

The Ryzen 5 PRO 8645HS is manufactured by AMD. It was released in 16 April 2024 (1 year ago). It is based on the Hawk Point (2024−2025) architecture. It features 6 cores and 12 threads. Base frequency is 4.3 GHz, with boost up to 5 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP7. Thermal design power (TDP): 45 Watt. Memory support: DDR5. Passmark benchmark score: 23,227 points. Launch price was $299.

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.

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Processing Power

The Ryzen 5 PRO 8645HS packs 6 cores / 12 threads, while the Ryzen 7 7840S offers 8 cores / 16 threads — the Ryzen 7 7840S has 2 more cores. Boost clocks reach 5 GHz on the Ryzen 5 PRO 8645HS versus 5.1 GHz on the Ryzen 7 7840S — a 2% clock advantage for the Ryzen 7 7840S (base: 4.3 GHz vs 3.8 GHz). The Ryzen 5 PRO 8645HS uses the Hawk Point (2024−2025) architecture (4 nm), while the Ryzen 7 7840S uses Phoenix-HS (Zen 4) (2023) (4 nm). In PassMark, the Ryzen 5 PRO 8645HS scores 23,227 against the Ryzen 7 7840S's 23,290 — a 0.3% lead for the Ryzen 7 7840S. L3 cache: 16 MB (total) on the Ryzen 5 PRO 8645HS vs 16 MB on the Ryzen 7 7840S.

Feature	Ryzen 5 PRO 8645HS	Ryzen 7 7840S
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	5 GHz	5.1 GHz+2%
Base Clock	4.3 GHz+13%	3.8 GHz
L3 Cache	16 MB (total)	16 MB
L2 Cache	1 MB (per core)	8 MB+700%
Process	4 nm	4 nm
Architecture	Hawk Point (2024−2025)	Phoenix-HS (Zen 4) (2023)
PassMark	23,227	23,290
Cinebench R23 Multi	—	13,500
Geekbench 6 Single	—	2,570
Geekbench 6 Multi	—	13,535

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Memory & Platform

The Ryzen 5 PRO 8645HS uses the FP7 socket (PCIe 4.0), while the Ryzen 7 7840S uses FP7/FP7r2/FP8 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Ryzen 5 PRO 8645HS	Ryzen 7 7840S
Socket	FP7	FP7/FP7r2/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: not specified (Ryzen 5 PRO 8645HS) / AMD-V (SVM) (Ryzen 7 7840S). The Ryzen 7 7840S includes integrated graphics (Radeon 780M), while the Ryzen 5 PRO 8645HS requires a dedicated GPU. Primary use case: Ryzen 7 7840S targets Gaming. Direct competitor: Ryzen 7 7840S rivals Core i7-1360P.