AMD Ryzen 5 PRO 5645

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.

Basic

Label Name
AMD
Platform
Desktop

CPU Specifications

Total Cores
?
Cores is a hardware term that describes the number of independent central processing units in a single computing component (die or chip).
6
Total Threads
?
Where applicable, Intel® Hyper-Threading Technology is only available on Performance-cores.
12
Basic Frequency
3.7GHz
Max Turbo Frequency
?
Max Turbo Frequency is the maximum single-core frequency at which the processor is capable of operating using Intel® Turbo Boost Technology and, if present, Intel® Turbo Boost Max Technology 3.0 and Intel® Thermal Velocity Boost. Frequency is typically measured in gigahertz (GHz), or billion cycles per second.
Up to 4.6GHz
L1 Cache
768KB
L2 Cache
3MB
L3 Cache
32MB
Unlocked for Overclocking
?
AMD`s product warranty does not cover damages caused by overclocking, even when overclocking is enabled via AMD hardware and/or software. GD-26.
No
CPU Socket
?
The socket is the component that provides the mechanical and electrical connections between the processor and motherboard.
AM4
Technology
?
Lithography refers to the semiconductor technology used to manufacture an integrated circuit, and is reported in nanometer (nm), indicative of the size of features built on the semiconductor.
TSMC 7nm FinFET
TDP
65W
Max. Operating Temperature
?
Junction Temperature is the maximum temperature allowed at the processor die.
95°C
PCI Express Version
?
PCI Express Revision is the supported version of the PCI Express standard. Peripheral Component Interconnect Express (or PCIe) is a high-speed serial computer expansion bus standard for attaching hardware devices to a computer. The different PCI Express versions support different data rates.
PCIe 4.0

Memory Specifications

Memory Type
?
Intel® processors come in four different types: Single Channel, Dual Channel, Triple Channel, and Flex Mode. Maximum supported memory speed may be lower when populating multiple DIMMs per channel on products that support multiple memory channels.
DDR4
Memory Channels
?
The number of memory channels refers to the bandwidth operation for real world application.
2
Bus Speed
Up to 3200MT/s

Miscellaneous

OS Support
Windows 11 - 64-Bit Edition, Windows 10 - 64-Bit Edition *Operating System (OS) support will vary by manufacturer.

Benchmarks

Geekbench 5
Single Core Score
1723
Geekbench 5
Multi Core Score
7111
Passmark CPU
Single Core Score
3441
Passmark CPU
Multi Core Score
21904

Compared to Other CPU

Geekbench 5 Single Core
1931 +12.1%
1824 +5.9%
1667 -3.3%
1603 -7%
Geekbench 5 Multi Core
7872 +10.7%
7451 +4.8%
6684 -6%
6276 -11.7%
Passmark CPU Single Core
3594 +4.4%
3510 +2%
3291 -4.4%
Passmark CPU Multi Core
23398 +6.8%
21110 -3.6%
20467 -6.6%