AMD Ryzen 7 PRO 5845

AMD Ryzen 7 PRO 5845: Power and Efficiency for Professionals and Enthusiasts

April 2025

Key Features: Zen 3 Architecture and More

The AMD Ryzen 7 PRO 5845 is part of the PRO lineup, aimed at the corporate sector but popular among enthusiasts due to its balance of price and capabilities.

Architecture and Process Technology

- Zen 3 is the foundation of the processor. This architecture provides high IPC (instructions per clock), which is critical for gaming and work tasks.

- TSMC 7nm FinFET is the manufacturing process that ensures energy efficiency (TDP 65W) and stability under load.

- Cache Memory: 32 MB L3 is advantageous for multithreaded tasks like rendering or code compilation.

Performance

- Geekbench 6: 2034 (single-core) / 8729 (multi-core). In comparison, the Ryzen 7 5800X scores around ~1950/8100, making the PRO 5845 about 5-7% faster in multithreading.

- Key Features: Support for PRO technologies (AMD Memory Guard, Secure Processor), which are important for data protection. Also includes Precision Boost Overdrive for manual overclocking.

Compatible Motherboards: AM4 Socket and Chipset Selection

The processor uses the AM4 socket, which remains relevant even in 2025 due to backward compatibility.

Recommended Chipsets

- B550: The optimal choice for most users. Examples of motherboards: MSI B550 Tomahawk ($130–150), ASUS TUF Gaming B550-Plus ($140). PCIe 4.0 support for SSDs and graphics cards.

- X570: For enthusiasts needing advanced features (e.g., ASUS ROG Strix X570-E Gaming, $200–220). More PCIe 4.0 lanes and USB ports.

Selection Features

- BIOS Update: Some motherboards require a firmware update to work with Ryzen 5000 PRO. Check the BIOS version before purchasing.

- VRM: For stable operation of the 8-core CPU, choose motherboards with VRM heatsinks (e.g., Gigabyte B550 AORUS Elite).

Supported Memory: DDR4 and Its Potential

The Ryzen 7 PRO 5845 works only with DDR4, which may disappoint DDR5 fans but helps save on budget.

Recommendations

- Frequencies: Optimal is 3200–3600 MHz. For instance, Kingston Fury Renegade DDR4-3600 (32 GB, ~$90) shows minimal latency.

- Dual-Channel Mode: Be sure to use 2 or 4 modules for maximum bandwidth.

Why Not DDR5?

AM4 chipsets physically do not support DDR5. This is a compromise, but for most tasks, DDR4-3600 is more than sufficient.

Power Supply: Calculating for 65W TDP

With a TDP of 65W, the processor does not require a powerful PSU, but it's important to consider other components.

Recommendations

- Without discrete GPU: A 400W supply is sufficient (e.g., be quiet! Pure Power 11 400W, $60).

- With an NVIDIA RTX 4070 level graphics card: It’s better to choose 600–650W (Corsair RM650x, $100).

- Certification: 80 Plus Gold or higher for efficiency and reliability.

User Experience

A build with an RTX 4060 Ti and Ryzen 7 PRO 5845 consumes about 300W at peak. A 550W PSU (EVGA SuperNOVA 550 G5) handles it without overheating.

Pros and Cons: What is Liked and What is Annoying

Pros

- Energy efficiency: 65W TDP compared to 105W for the Ryzen 7 5800X.

- Support for PRO technologies for security.

- High multithreaded performance for $300–350.

Cons

- No PCIe 5.0 and DDR5.

- Price is higher than non-PRO counterparts (e.g., Ryzen 7 5700X costs $250).

Usage Scenarios: Who is the Processor Made For

1. Work Tasks

- Video editing in DaVinci Resolve: Rendering a 4K project is 30% faster than with the Core i5-12400.

- Programming: Compiling the Linux kernel takes 85 seconds versus 110 with the Ryzen 5 5600X.

2. Gaming

- Paired with RTX 4070: 144 FPS in Full HD (Cyberpunk 2077, high settings).

- More suitable for streaming than the Core i7-12700KF due to 16 threads.

3. Multimedia

- Video transcoding in HandBrake: 20% faster than the previous generation.

Comparison with Competitors

- Intel Core i7-12700 ($320):

- Pros: DDR5 support, higher single-thread performance (~2150 in Geekbench 6).

- Cons: TDP 180W, requires expensive motherboards (LGA 1700).

- Ryzen 7 5800X3D ($350):

- Pros: 96MB L3 cache for gaming.

- Cons: No PRO features, TDP 105W.

Conclusion: The PRO 5845 excels in scenarios where security and energy efficiency are crucial.

Practical Tips for Building a System

1. Cooling

- The stock cooler will suffice, but for quiet operation, choose a tower cooler (DeepCool AK400, $35).

2. BIOS

- Update the BIOS via USB Flashback before installation if the motherboard does not support the CPU out of the box.

3. Case

- A minimum of 2 fans for intake is advised. Example: Fractal Design Meshify C ($90).

Final Conclusion: Who Should Choose the Ryzen 7 PRO 5845

This processor is ideal if:

- You need a balance between performance and power consumption.

- You require PRO features for data protection.

- Your budget is limited to $1000 for the entire build (example: CPU + B550 + 32GB DDR4 + RTX 4060).

Target Audience: IT professionals, streamers, engineers, and those building a PC to last for years without hardware upgrades.

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