AMD Ryzen 5 PRO 7645
AMD Ryzen 5 PRO 7645: Complete Review of the Processor for Work and Gaming
Introduction: A New Player in the Ryzen PRO Lineup
The AMD Ryzen 5 PRO 7645 is a processor that combines performance, energy efficiency, and functionality for professional and home tasks. Based on the Zen 4 architecture (codenamed Raphael) and built on TSMC's 5nm FinFET process, it offers six cores, 12 threads, and integrated Radeon graphics. In this article, we will explore its key features, compatibility, advantages and disadvantages, as well as provide practical tips for building a PC based on it.
1. Key Specifications: Architecture and Performance
Zen 4 Architecture and 5nm Process
The Ryzen 5 PRO 7645 is built on the Zen 4 architecture, which brought a significant IPC (instructions per cycle) boost compared to Zen 3. Thanks to TSMC's 5nm process, the processor demonstrates high energy efficiency: with a TDP of 65W, it delivers performance on par with top models from previous generations.
Key Features:
- 32 MB L3 Cache — reduces latency when working with data, which is critical for gaming and rendering.
- Integrated Radeon Graphics — a basic option for office tasks and light gaming (such as Dota 2 on medium settings).
- PCIe 5.0 Support — a future-proof solution for high-speed NVMe drives and next-generation graphics cards.
Performance in Tests
- Geekbench 6 Single-Core: 2564 — this is higher than the Intel Core i5-12400 (~2200), making it a great choice for tasks relying on single-core speed (web browsing, office applications).
- Geekbench 6 Multi-Core: 11182 — six cores are sufficient for rendering in Blender or compiling code.
Real-World Example: Users report that the processor handles streaming in OBS Studio without noticeable FPS drops in games, thanks to multithreading optimization.
2. Compatible Motherboards
AM5 Socket and Chipsets
The processor uses the AM5 socket, which means compatibility only with motherboards based on B650, B650E, X670, and X670E chipsets.
Selection Recommendations:
- B650/B650E — optimal choice for most users. Boards like the ASUS TUF Gaming B650-Plus support PCIe 5.0 for graphics cards and NVMe.
- X670/X670E — for enthusiasts needing extra USB4 ports and PCIe 5.0 slots (for example, for dual graphics cards).
Features:
- Be sure to update the BIOS before installing the processor — early firmware versions may have stability issues.
- Pay attention to the VRM cooling system — motherboards with MOSFET heatsinks, like the MSI MAG B650 Tomahawk, are suitable for the Ryzen 5 PRO 7645.
3. Supported Memory: DDR5 and Its Nuances
The Ryzen 5 PRO 7645 only works with DDR5 memory, providing high bandwidth (up to 5200 MHz at standard).
RAM Selection Tips:
- Choose kits with low timings (e.g., CL30) — this will enhance system responsiveness.
- Modules supporting EXPO (AMD's version of XMP), such as G.Skill Trident Z5 Neo, are suitable for overclocking.
Example: In tests, a DDR5-6000 CL36 kit shows an 8% performance increase in games (Cyberpunk 2077) compared to DDR5-4800.
4. Power Supply Units: Power Calculation
With a TDP of 65W, the processor does not require a powerful PSU, but it is essential to consider other components:
- Minimum: 500W (for a system with an NVIDIA RTX 3060-level graphics card).
- Recommendation: 650–750W (with headroom for upgrades and high-performance GPUs).
- Certification: 80 Plus Bronze or Gold (Corsair RM650x, be quiet! Straight Power 11).
Important: The integrated Radeon graphics consume up to 15-20W, so a 400W PSU is sufficient for PCs without discrete graphics cards.
5. Pros and Cons of the Processor
Advantages
- Energy Efficiency — even under load, temperatures rarely exceed 75°C with the stock cooler.
- PCIe 5.0 Support — ready for future upgrades.
- Good Multithreading — 12 threads are sufficient for video editing in DaVinci Resolve.
Disadvantages
- Requires DDR5 — this increases the assembly cost.
- Limited Overclocking — the multiplier is locked (unlike non-PRO versions).
User Reviews: Some note that the integrated graphics are weak for modern gaming, but sufficient for working with graphic editors.
6. Use Cases
Gaming
With a discrete graphics card (e.g., NVIDIA RTX 4070), the processor delivers stable 100+ FPS in games like Call of Duty: Warzone at Ultra settings (1080p).
Work Tasks
- 3D Rendering — render time for a scene in Blender is reduced by 15% compared to the Ryzen 5 5600X.
- Programming — compiling the Linux kernel takes about 45 minutes (compared to about 55 with the Intel Core i5-13400).
Multimedia
Streaming at 1080p60 with encoding via AMD AMF does not burden the system — this is confirmed by tests in OBS Studio.
7. Comparison with Rivals
AMD Ryzen 5 7600X
- Pros of 7600X: Higher frequency (4.7–5.3 GHz vs. 4.4–5.1 GHz of the PRO 7645), unlocked multiplier.
- Cons: Lacks PRO features (AMD PRO Technologies memory protection), higher TDP (105W).
Intel Core i5-13400
- Pros of Intel: Supports DDR4, lower price.
- Cons: Weaker in single-threaded tasks (Geekbench 6 SC ~2100), no PCIe 5.0.
Conclusion: The Ryzen 5 PRO 7645 outperforms competitors in professional scenarios thanks to optimization for multitasking.
8. Practical Assembling Tips
1. Cooler: The stock Wraith Stealth is sufficient for stock operation, but for quieter operation, opt for a tower cooler like the DeepCool AK400.
2. Drives: Use NVMe PCIe 5.0 (such as Samsung 990 Pro) for maximum speed.
3. Case: Ensure good ventilation — the processor is not prone to overheating, but hot air from the graphics card can affect overall temperature.
9. Final Verdict: Who is the Ryzen 5 PRO 7645 For?
This processor is ideal for:
- Office users needing stability and data protection (thanks to AMD PRO Technologies).
- Gamers planning to use a discrete graphics card.
- Professionals in video editing, programming, and 3D design.
Why this one? The combination of energy efficiency, support for new standards, and an affordable price makes the Ryzen 5 PRO 7645 a versatile solution for those who don’t want to overpay for top models but seek a modern platform with a future-proof foundation.