Ryzen 5 PRO 7645 vs Ryzen 9 PRO 7940HS

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 7645 vs Ryzen 9 PRO 7940HS 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 7645 vs Ryzen 9 PRO 7940HS: 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 7645

2023

Why buy it

✅+0.9% higher PassMark.
✅+100% larger total L3 cache (32 MB vs 16 MB).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 PRO 7940HS across 50 shared CPU benchmark tests.
❌Launch MSRP is still $229 MSRP, while Ryzen 9 PRO 7940HS mostly shows up through inconsistent older-market listings.
❌712.5% higher power demand at 65W vs 8W.
❌No integrated graphics, while Ryzen 9 PRO 7940HS can still boot and troubleshoot without a discrete GPU.

Ryzen 9 PRO 7940HS

2023

Why buy it

✅Better for gaming: +7.1% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 8W instead of 65W, a 57W reduction.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Radeon 780M, while Ryzen 5 PRO 7645 needs a discrete GPU.

Trade-offs

❌Lower PassMark (27,318 vs 27,565).
❌Smaller total L3 cache (16 MB vs 32 MB).

Quick Answers

So, is Ryzen 5 PRO 7645 better than Ryzen 9 PRO 7940HS?

It depends on what you want from the system. For gaming, Ryzen 9 PRO 7940HS is ahead with a 7.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 5 PRO 7645 pulls ahead with 0.9% better PassMark. Ryzen 5 PRO 7645 also has the bigger cache pool with 100% larger total L3 cache (32 MB vs 16 MB).

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

For streaming, content creation, and heavier multitasking, Ryzen 5 PRO 7645 is the stronger fit. You are getting 0.9% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 100% larger total L3 cache (32 MB vs 16 MB).

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

Ryzen 5 PRO 7645 is the better buy right now. Ryzen 5 PRO 7645 comes in at an unclear MSRP at $229 MSRP versus unclear MSRP, and it still gives you 0.9% better PassMark. The compromise is that Ryzen 9 PRO 7940HS is still the better pure gaming CPU with a 7.1% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (120.4 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Ryzen 5 PRO 7645 makes more sense long term for 2026 and beyond. You are getting 100% larger total L3 cache (32 MB vs 16 MB) and more multi-core headroom with 6 cores / 12 threads instead of 8/16. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Ryzen 5 PRO 7645 vs Ryzen 9 PRO 7940HS Technical Specifications

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

Ryzen 5 PRO 7645

The Ryzen 5 PRO 7645 is manufactured by AMD. It was released in 13 June 2023 (2 years ago). It is based on the Raphael (2023−2025) architecture. It features 6 cores and 12 threads. Base frequency is 3.8 GHz, with boost up to 5.1 GHz. L3 cache: 32 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5. Passmark benchmark score: 27,565 points. Launch price was $299.

Ryzen 9 PRO 7940HS

The Ryzen 9 PRO 7940HS is manufactured by AMD. It was released in 13 June 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 4 GHz, with boost up to 5.2 GHz. L3 cache: 16 MB. L2 cache: 8 MB. Built on 4 nm process technology. Socket: FP7/FP8. Thermal design power (TDP): 8 MB + 16 MB. Passmark benchmark score: 27,318 points. Launch price was $299.

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Processing Power

The Ryzen 5 PRO 7645 packs 6 cores / 12 threads, while the Ryzen 9 PRO 7940HS offers 8 cores / 16 threads — the Ryzen 9 PRO 7940HS has 2 more cores. Boost clocks reach 5.1 GHz on the Ryzen 5 PRO 7645 versus 5.2 GHz on the Ryzen 9 PRO 7940HS — a 1.9% clock advantage for the Ryzen 9 PRO 7940HS (base: 3.8 GHz vs 4 GHz). The Ryzen 5 PRO 7645 uses the Raphael (2023−2025) architecture (5 nm), while the Ryzen 9 PRO 7940HS uses Phoenix-HS (Zen 4) (2023) (4 nm). In PassMark, the Ryzen 5 PRO 7645 scores 27,565 against the Ryzen 9 PRO 7940HS's 27,318 — a 0.9% lead for the Ryzen 5 PRO 7645. L3 cache: 32 MB (total) on the Ryzen 5 PRO 7645 vs 16 MB on the Ryzen 9 PRO 7940HS.

Feature	Ryzen 5 PRO 7645	Ryzen 9 PRO 7940HS
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	5.1 GHz	5.2 GHz+2%
Base Clock	3.8 GHz	4 GHz+5%
L3 Cache	32 MB (total)+100%	16 MB
L2 Cache	1 MB (per core)	8 MB+700%
Process	5 nm	4 nm-20%
Architecture	Raphael (2023−2025)	Phoenix-HS (Zen 4) (2023)
PassMark	27,565	27,318
Cinebench R23 Multi	—	16,000
Geekbench 6 Single	—	2,605
Geekbench 6 Multi	—	10,348

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Memory & Platform

The Ryzen 5 PRO 7645 uses the AM5 socket (PCIe 4.0), while the Ryzen 9 PRO 7940HS uses FP7/FP8 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Ryzen 5 PRO 7645	Ryzen 9 PRO 7940HS
Socket	AM5	FP7/FP8
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	—	DDR5-5600
Max RAM Capacity	—	64 GB
RAM Channels	—	2
ECC Support	—	Yes
PCIe Lanes	—	20

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Advanced Features

Virtualization: not specified (Ryzen 5 PRO 7645) / Yes (Ryzen 9 PRO 7940HS). The Ryzen 9 PRO 7940HS includes integrated graphics (Radeon 780M), while the Ryzen 5 PRO 7645 requires a dedicated GPU.