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ASRock B450M/AC R2.0 AM4 AMD Promontory B450 SATA vs ASRock Intel Core Ultra Z890 LGA1851 RL-ILM Mini

Updated July 2026 — ASRock B450M/AC R2.0 AM4 AMD Promontory B450 SATA wins on price and form factor, ASRock Intel Core Ultra Z890 LGA1851 RL-ILM Mini wins on connectivity and performance.

The ASRock Intel Core Ultra Z890 offers superior performance and connectivity features compared to the ASRock B450M/AC R2.0. However, the B450M/AC R2.0 is a more budget-friendly option.

Why ASRock B450M/AC R2.0 AM4 AMD Promontory B450 SATA is better

Price

B450M/AC R2.0 is significantly cheaper at $79.00.

Form Factor

Micro ATX offers more expansion options than Mini ITX.

Compatibility

Supports a wide range of AMD processors.

Why ASRock Intel Core Ultra Z890 LGA1851 RL-ILM Mini is better

Performance

Supports DDR5 memory up to 9466 MHz.

Connectivity

Includes Thunderbolt 4 Type-C ports.

Power Delivery

12+1+1+1+1 power phase for stable performance.

Overall score

ASRock B450M/AC R2.0 AM4 AMD Promontory B450 SATA
70
ASRock Intel Core Ultra Z890 LGA1851 RL-ILM Mini
85

Specifications

SpecASRock B450M/AC R2.0 AM4 AMD Promontory B450 SATAASRock Intel Core Ultra Z890 LGA1851 RL-ILM Mini
Socket TypeAM4LGA1851
Memory TypeDDR4DDR5
Max Memory Speed3200 MHz9466 MHz
PCIe Slots1 x16, 1 x16N/A
Graphics OutputHDMIHDMI, Thunderbolt 4

Dimension comparison

ASRock B450M/AC R2.0 AM4 AMD Promontory B450 SATAASRock Intel Core Ultra Z890 LGA1851 RL-ILM Mini

Overview of the ASRock B450M/AC R2.0

The ASRock B450M/AC R2.0 is an AM4 motherboard designed for gamers and everyday users alike. Priced at $79.00, it provides a budget-friendly option without sacrificing essential features. This motherboard supports a variety of AMD processors, including Ryzen 2000, 3000, 4000, 5000, and 5000 G-Series, making it a versatile choice for different builds. Its Micro ATX form factor allows for compact setups, while features like HDMI output and AMD Quad CrossFireX support enhance its appeal for graphics-focused users.

Overview of the ASRock Intel Core Ultra Z890

The ASRock Intel Core Ultra Z890 is a more advanced Mini ITX motherboard, priced at $249.99. It is optimized for Intel Core Ultra Processors (Series 2) with an LGA1851 socket, making it suitable for high-performance computing tasks. This motherboard boasts impressive specifications, including a 12+1+1+1+1 power phase design for stable power delivery and support for DDR5 memory at speeds up to 9466 MHz. The inclusion of features such as Thunderbolt 4 connectivity positions it as a strong contender for users looking for cutting-edge technology.

Performance Comparison

In terms of performance capabilities, the ASRock B450M/AC R2.0 allows users to run AMD's Ryzen processors effectively, supporting DDR4 memory up to 3200 MHz. While this is adequate for many tasks, it falls short compared to the ASRock Intel Core Ultra Z890's support for DDR5 memory, which can achieve speeds of 9466 MHz. This difference is significant for tasks requiring high bandwidth, such as gaming or content creation. Therefore, users prioritizing performance may find the Intel Z890 more appealing.

Connectivity Options

Connectivity is another area where the ASRock Intel Core Ultra Z890 excels. It features multiple output options, including one HDMI and two Thunderbolt 4 Type-C ports, allowing for high data transfer rates and versatility in connecting peripherals. In contrast, the ASRock B450M/AC R2.0 primarily offers HDMI for video output, which may limit connectivity options for users with multiple high-speed devices. The additional ports on the Z890 make it a better choice for those who need robust connectivity for modern devices.

Form Factor and Build Quality

The ASRock B450M/AC R2.0 is designed in a Micro ATX form factor, which is suitable for compact builds. It balances space efficiency with adequate expandability through one PCIe 3.0 x16 and one PCIe 2.0 x16 slot. On the other hand, the ASRock Intel Core Ultra Z890’s Mini ITX form factor is even smaller, appealing to users who prioritize space-saving designs. However, the Mini ITX layout can limit expansion options compared to Micro ATX motherboards. Users must consider their build requirements when choosing between these form factors.

User Experience and Features

Both motherboards offer features aimed at enhancing user experience, but they cater to different needs. The ASRock B450M/AC R2.0 supports AMD's Quad CrossFireX, which is beneficial for users looking to set up multi-GPU configurations for enhanced graphics performance. Meanwhile, the ASRock Intel Core Ultra Z890 includes features like BIOS Flashback and Memory OC Shield, which contribute to a more stable and user-friendly experience, particularly during overclocking. Depending on the user’s priorities, either motherboard may provide a more satisfying experience.

Price Consideration

When considering price, the ASRock B450M/AC R2.0 is significantly cheaper at $79.00 compared to the ASRock Intel Core Ultra Z890, which is priced at $249.99. This price difference of about 70% means that buyers on a budget may prefer the B450M/AC R2.0. However, for those willing to invest more for advanced features and performance, the Z890 justifies its higher cost with cutting-edge technology and capabilities.

Which should you buy?

Choosing between the ASRock B450M/AC R2.0 and the ASRock Intel Core Ultra Z890 ultimately depends on your specific needs. If you are looking for an affordable option for basic gaming and everyday tasks, the B450M/AC R2.0 is a solid choice at $79.00. However, if you require advanced features, higher memory speeds, and better connectivity for intensive tasks, the ASRock Intel Core Ultra Z890 at $249.99 is worth the investment. Consider what aspects of performance and features matter most to you before making a decision.