AMD Ryzen 5 PRO 5645

AMD Ryzen 5 PRO 5645: Comprehensive Review of the Processor for Work and Home

April 2025

Key Specifications: Architecture and Key Features

The AMD Ryzen 5 PRO 5645 processor is a modern solution for both business and home users, combining energy efficiency with high performance.

- Architecture: Based on the upgraded Zen 3+ microarchitecture with optimizations for corporate tasks.

- Manufacturing Process: TSMC 7nm FinFET – a proven technology ensuring low thermal output (TDP 65W).

- Cores and Threads: 6 cores, 12 threads – ideal for multitasking.

- Cache: 32 MB of L3 cache accelerates data processing in applications and games.

- PRO Features: Support for AMD PRO Security (memory encryption, attack protection), remote management (DASH), and extended warranty (up to 3 years).

Performance: In Cinebench R23 tests, the processor scores around 12,500 points in multi-threaded mode, which is 15% higher than the Ryzen 5 5600X. For office tasks (Excel, browser), it shows minimal latency thanks to the optimized cache.

Compatible Motherboards: Sockets and Chipsets

The processor uses the AM4 socket, making it compatible with motherboards based on B550, X570, and B450 chipsets (after BIOS update).

Recommended Chipsets:

- B550: Best choice for most users. Examples: ASUS TUF B550-PLUS ($120–$150). Supports PCIe 4.0, USB 3.2 Gen 2.

- X570: For enthusiasts needing additional PCIe lanes (e.g., ASRock X570 Phantom Gaming 4, $160–$190).

Selection Features:

- Ensure that the motherboard supports TDP 65W (most models can handle it even with stock cooling).

- For PRO features (e.g., DASH), choose motherboards with B550/X570 chipsets and support for AMD PRO Technologies.

Supported Memory Types

The Ryzen 5 PRO 5645 works with DDR4-3200 (officially), but many boards allow overclocking to DDR4-3600.

Recommendations:

- Optimal capacity: 16–32 GB (2x8 GB or 2x16 GB).

- Examples of kits: Corsair Vengeance LPX 32GB (2x16GB) DDR4-3200 ($75–$90).

- To reduce latencies, activate the XMP profile in the BIOS.

Important: The processor does not support DDR5 — this is a compromise for compatibility with budget platforms.

Power Supply Recommendations

With a TDP of 65W, the Ryzen 5 PRO 5645 does not require a powerful PSU, but the choice depends on the graphics card:

- Integrated Graphics: A PSU of 400–450W is sufficient (e.g., be quiet! Pure Power 11 400W, $60).

- Discrete Graphics Card: For RTX 4060 or RX 7600XT, choose a PSU of 550–650W (Seasonic FOCUS GX-650, $100).

Tip: Don't skimp on the PSU — quality models (80+ Gold) provide stability and component protection.

Pros and Cons of the Processor

Pros:

- Energy efficiency: Consumes less power than the Intel Core i5-13400F.

- PRO features: Data protection and remote management are critical for business.

- Cool operation: Even under load, temperatures rarely exceed 70°C (with stock cooler).

Cons:

- No PCIe 5.0: Limits the speed of next-generation SSDs.

- Price: $220–240 compared to $180–200 for Ryzen 5 5600 (without PRO features).

Use Cases

1. Office Tasks: Ideal for working with documents, video conferencing, and virtual machines.

2. Multimedia: Quickly renders video in 1080p (in Premiere Pro — 20% faster than Ryzen 5 5500).

3. Gaming: Paired with an RTX 3060, delivers 60+ FPS in Full HD (Cyberpunk 2077 on medium settings).

4. Small Business Servers: Support for ECC memory (on compatible boards) and high reliability.

Comparison with Competitors

- Intel Core i5-13400F: Cheaper ($180), but higher power consumption (88W), no integrated graphics.

- Ryzen 5 7600: On AM5, DDR5, 10–15% faster, but more expensive ($250–270 + new board).

Conclusion: The Ryzen 5 PRO 5645 outperforms competitors in the corporate segment due to its PRO features and long-term support.

Practical Assembly Tips

1. Cooling: The boxed cooler is sufficient, but for quieter operation, choose DeepCool AK400 ($35).

2. Motherboard: For savings — MSI B550-A PRO ($130), for PRO features — ASUS ProArt B550-CREATOR ($200).

3. Memory: 2 modules of DDR4-3200 to activate dual-channel mode.

4. Storage: PCIe 4.0 SSD (WD Black SN770 1TB, $80) for maximum speed.

Final Verdict: Who is the Ryzen 5 PRO 5645 Suitable For?

This processor is an excellent choice for:

- Small Business: Security and remote management save on IT budgets.

- Home Users: Who need a balance between gaming and work.

- Budget-conscious Enthusiasts: Wanting to build a PC on AM4 without overpaying for DDR5.

At a price of $220–240, the Ryzen 5 PRO 5645 justifies the investment, especially if you value reliability and long-term support.

Prices are current as of April 2025. Listed for new devices in the USA.