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.

Ryzen 5 PRO 8645HS vs Ryzen 7 7840S 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 7840S: 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

❌Worse for gaming: lower average FPS than Ryzen 7 7840S across 50 shared CPU benchmark tests.
❌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

✅Better for gaming: +5.2% higher average FPS across 50 shared CPU benchmark tests.
✅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.

Quick Answers

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

Yes. Ryzen 7 7840S is the better all-around CPU here. It gives you a 5.2% average FPS lead across 50 shared CPU game tests in our data and 0.3% 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 7840S is the better pick. According to our tests, it delivers 5.2% 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 7840S is the stronger 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 makes the most sense overall. Ryzen 7 7840S comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 5.2% 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 7840S 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 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.

⚡

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

🧠

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

🔧

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.