Ryzen 5 PRO 8645HS 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 5 PRO 8645HS 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 5 PRO 8645HS 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 5 PRO 8645HS

2024

Why buy it

Trade-offs

❌Lower PassMark (23,227 vs 23,415).
❌60.7% higher power demand at 45W vs 28W.

Ryzen 7 8840U

2023

Why buy it

✅Draws 28W instead of 45W, a 17W reduction.

Trade-offs

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

Quick Answers

So, is Ryzen 7 8840U better than Ryzen 5 PRO 8645HS?

Yes. Ryzen 7 8840U is the better all-around CPU here. It gives you a 2.0% average FPS lead across 50 shared CPU game tests in our data and 0.8% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Ryzen 7 8840U is the better pick. According to our tests, it delivers 2.0% 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 8840U is the stronger fit. You are getting 0.8% 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 a 2.0% average FPS lead across 50 shared CPU game tests in our data.

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

Ryzen 5 PRO 8645HS makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2023). That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Ryzen 5 PRO 8645HS vs Ryzen 7 8840U Technical Specifications

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

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 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

The Ryzen 5 PRO 8645HS packs 6 cores / 12 threads, while the Ryzen 7 8840U offers 8 cores / 16 threads — the Ryzen 7 8840U has 2 more cores. Boost clocks reach 5 GHz on the Ryzen 5 PRO 8645HS versus 5.1 GHz on the Ryzen 7 8840U — a 2% clock advantage for the Ryzen 7 8840U (base: 4.3 GHz vs 3.3 GHz). The Ryzen 5 PRO 8645HS uses the Hawk Point (2024−2025) architecture (4 nm), while the Ryzen 7 8840U uses Hawk Point-U (Zen 4) (2023−2025) (4 nm). In PassMark, the Ryzen 5 PRO 8645HS scores 23,227 against the Ryzen 7 8840U's 23,415 — a 0.8% lead for the Ryzen 7 8840U. Both processors carry 16 MB (total) of L3 cache.

Feature	Ryzen 5 PRO 8645HS	Ryzen 7 8840U
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	5 GHz	5.1 GHz+2%
Base Clock	4.3 GHz+30%	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	Hawk Point (2024−2025)	Hawk Point-U (Zen 4) (2023−2025)
PassMark	23,227	23,415

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Memory & Platform

The Ryzen 5 PRO 8645HS uses the FP7 socket (PCIe 4.0), while the Ryzen 7 8840U uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard.