ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 - vs GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard,
Updated August 2026 — GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, leads on connectivity and features.
The GIGABYTE Z790 UD AC offers superior performance and features compared to the B450M-HDV R4.0. For high-end builds, it is the better choice.
Why ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 - is better
Price
B450M-HDV R4.0 is significantly cheaper.
Basic Features
Adequate for budget builds.
AMD Support
Compatible with a range of AMD processors.
Why GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, is better
Performance
Supports latest Intel processors.
Memory
Supports DDR5 with higher capacity.
Expansion
More PCIe slots and connectivity options.
Overall score
Specifications
| Spec | ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 - | GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, |
|---|---|---|
| Socket | AM4 | LGA 1700 |
| Max RAM | 64GB DDR4 | 128GB DDR5 |
| PCIe Version | 3.0 | 5.0 |
| Audio Codec | Realtek ALC887 | Advanced Audio |
| WiFi | No | Yes |
Dimension comparison
Overview of the B450M-HDV R4.0 and GIGABYTE Z790 UD AC
The B450M-HDV R4.0 is priced at $72.47, making it about 17% cheaper than the GIGABYTE Z790 UD AC, which retails for $149.99. This price difference reflects the distinct target audiences and use cases for each motherboard. The B450M-HDV R4.0 is designed for users looking for a budget-friendly option to support AMD Ryzen processors, while the GIGABYTE Z790 UD AC caters to gamers and high-performance users with its support for the latest Intel Core processors and advanced features.
Compatibility and Processor Support
The B450M-HDV R4.0 supports a range of AMD processors, including the Ryzen 2000 to 5000 series. This compatibility makes it an excellent choice for users who want to upgrade their existing AMD systems. On the other hand, the GIGABYTE Z790 UD AC supports the latest Intel Core 14th, 13th, and 12th generation processors, which provides users with access to the latest performance enhancements and features. This significant difference in CPU support caters to different user preferences, with the B450M-HDV R4.0 focusing on AMD fans and the GIGABYTE Z790 UD AC appealing to Intel enthusiasts.
Memory Support
When it comes to memory, the B450M-HDV R4.0 supports DDR4 memory with a maximum capacity of 64GB across two DIMM slots, with speeds up to 3200MHz. In contrast, the GIGABYTE Z790 UD AC supports the newer DDR5 memory technology with four DIMM slots, allowing for significant improvements in speed and bandwidth. This means that for users planning to build a high-end system, the GIGABYTE Z790 UD AC is a better option due to its future-proofing capabilities and greater memory performance potential.
Expansion Slots and Connectivity
The B450M-HDV R4.0 features one PCIe 3.0 x16 slot and one PCIe 2.0 x1 slot, which is adequate for basic gaming and productivity tasks. However, the GIGABYTE Z790 UD AC offers a more robust expansion capability with PCIe 5.0 support and multiple M.2 slots for NVMe SSDs, allowing for faster storage solutions. Additionally, the GIGABYTE motherboard has USB-C 3.2 connectivity, enhancing data transfer speeds. This difference in expansion capabilities makes the GIGABYTE Z790 UD AC more suitable for users seeking to build cutting-edge systems with high storage demands.
Audio and Networking Features
The B450M-HDV R4.0 is equipped with 7.1 channel HD audio powered by the Realtek ALC887/897 audio codec, providing decent sound quality for casual users. While this is sufficient for most gaming and general use scenarios, the GIGABYTE Z790 UD AC enhances the experience with its advanced audio capabilities alongside a dual-band WiFi feature and 2.5GbE LAN connection. This makes it a better choice for gamers and content creators who require high-quality audio and fast internet connectivity for streaming and online gaming.
Thermal Management and Build Quality
Thermal management is crucial for both motherboards, but the GIGABYTE Z790 UD AC stands out with its comprehensive thermal design. It features fully covered MOSFET heatsinks, M.2 thermal guard, and ultra-durable armor, ensuring optimal performance under heavy loads. The B450M-HDV R4.0 does not offer the same level of thermal management, which might limit performance during intensive tasks. For users concerned about overheating and system stability, the GIGABYTE Z790 UD AC provides a more robust solution.
Aesthetic Appeal
Aesthetic considerations are often important for PC builders, and the GIGABYTE Z790 UD AC incorporates RGB Fusion technology, allowing users to customize their builds with vibrant lighting effects. The B450M-HDV R4.0, while functional, does not offer the same level of visual customization. For gamers and enthusiasts looking to showcase their builds, the GIGABYTE Z790 UD AC presents a more visually appealing option.
Which should you buy?
Ultimately, the choice between the B450M-HDV R4.0 and the GIGABYTE Z790 UD AC depends on your specific needs and budget. If you're looking for a cost-effective solution for an AMD-based system with essential features, the B450M-HDV R4.0 at $72.47 is a solid choice. However, for users seeking the latest technology, enhanced performance, and greater expandability, the GIGABYTE Z790 UD AC at $149.99 offers superior features that justify the higher price.