GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, vs MSI B550-A PRO ProSeries Motherboard
Updated August 2026 — GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, leads on performance and features.
The GIGABYTE Z790 UD AC offers superior performance and features compared to the MSI B550-A PRO, making it the better choice for high-end users.
Why GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, is better
Performance
Supports DDR5 for faster memory
Connectivity
Includes PCIe 5.0 for future-proofing
Thermals
Comprehensive thermal management design
Why MSI B550-A PRO ProSeries Motherboard is better
Price
More budget-friendly at $109.00
Audio
Dedicated audio codec for better sound quality
BIOS Update
Flash BIOS Button for easy updates
Overall score
Specifications
| Spec | GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, | MSI B550-A PRO ProSeries Motherboard |
|---|---|---|
| Socket | LGA 1700 | AM4 |
| Memory Type | DDR5 | DDR4 |
| PCIe Version | 5.0 | 4.0 |
| M.2 Slots | 3 | 1 |
| USB Ports | USB 3.2 Gen 2x2 | USB 3.2 Gen 2 |
Dimension comparison
Overview of the GIGABYTE Z790 UD AC and MSI B550-A PRO
The GIGABYTE Z790 UD AC and MSI B550-A PRO are two formidable motherboards designed for different processor families. The GIGABYTE Z790 UD AC supports Intel's 14th, 13th, and 12th Generation processors, while the MSI B550-A PRO is tailored for AMD Ryzen 5000 and future processors. With distinct features and pricing, these motherboards cater to different needs in the gaming and productivity realms.
Pricing Comparison
The GIGABYTE Z790 UD AC is priced at $149.99, while the MSI B550-A PRO is available for a lower price of $109.00. This makes the MSI B550-A PRO about 27% cheaper than its GIGABYTE counterpart. The significant price difference may appeal to budget-conscious users seeking a robust motherboard without the high-end features that the Z790 offers. Understanding this price gap is crucial for consumers evaluating their options based on budget constraints.
Performance and Compatibility
In terms of performance, the GIGABYTE Z790 UD AC is built to support high-end Intel processors with its 16+1+1 power phase design, ensuring stability and efficiency. It is compatible with dual-channel DDR5 memory, allowing for faster data transfer compared to the MSI B550-A PRO, which supports dual-channel DDR4 memory. While the B550-A PRO can handle up to 128 GB of RAM, it may not match the speed and performance benefits offered by the GIGABYTE's DDR5 support. This performance edge makes the Z790 UD AC a better fit for high-performance gaming and demanding applications.
Connectivity Options
The GIGABYTE Z790 UD AC excels in connectivity, featuring PCIe 5.0 and triple NVMe PCIe 4.0 x4 M.2 slots. This ensures faster SSD performance and improved bandwidth for future upgrades. In contrast, the MSI B550-A PRO supports PCIe 4.0, which is still competitive but not as advanced as PCIe 5.0. Additionally, the Z790 UD AC comes with SuperSpeed USB 3.2 Gen 2x2 Type-C, facilitating faster data transfer rates compared to the USB 3.2 Gen 2 ports on the B550-A PRO. For users focused on cutting-edge connectivity, the GIGABYTE motherboard has a clear advantage.
Thermal Management
Thermal management is another area where the GIGABYTE Z790 UD AC shines. It features a comprehensive thermal design with fully covered MOSFET heatsinks and an M.2 thermal guard, ensuring optimal performance under heavy loads. The MSI B550-A PRO also includes a premium thermal solution with a heatsink thermal pad, but it lacks the extensive thermal management that the Z790 provides. For gamers and professionals who push their systems to the limit, the enhanced thermal capabilities of the GIGABYTE motherboard are a significant benefit.
Audio Quality
When it comes to audio performance, the MSI B550-A PRO incorporates the Realtek ALC892/ALC897 codec, providing studio-grade sound quality for immersive gaming experiences. The GIGABYTE Z790 UD AC does not specify its audio capabilities, which may indicate a more generic audio solution. For users who prioritize high-quality audio in their gaming or media consumption, the MSI B550-A PRO may hold the upper hand due to its dedicated audio enhancements.
Build Quality and Design
The GIGABYTE Z790 UD AC is built with a sturdy 6-layer PCB and ultra-durable armor, ensuring longevity and reliability. The MSI B550-A PRO also emphasizes build quality with its extended heatsink design and Core Boost technology, which optimizes power delivery to the CPU. Both motherboards showcase robust construction, but the GIGABYTE's additional features may appeal to users looking for an extra layer of durability in their builds.
User-Friendly Features
User-friendly features are essential for both novice and experienced builders. The GIGABYTE Z790 UD AC includes EZ-Latch technology for easy installation of M.2 drives and Q-Flash for updating the BIOS effortlessly. The MSI B550-A PRO offers a Flash BIOS Button that allows users to update the BIOS without a CPU or memory. While both motherboards have unique features that simplify the building process, the GIGABYTE's EZ-Latch may provide a slightly more convenient experience for installing drives.
Which should you buy?
Choosing between the GIGABYTE Z790 UD AC and the MSI B550-A PRO depends largely on your specific needs and budget. If you are looking for cutting-edge performance, faster connectivity, and superior thermal management, the GIGABYTE Z790 UD AC is the better choice, albeit at a higher price of $149.99. However, if you are on a budget and need a reliable motherboard for AMD Ryzen processors, the MSI B550-A PRO offers excellent value at $109.00. Ultimately, your decision should align with your processor choice and performance expectations.