GIGABYTE A620I AX vs GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard,
Updated August 2026 — GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, leads on expansion and cooling.
The GIGABYTE Z790 UD AC offers superior performance and features for Intel users, while the A620I AX is a solid choice for AMD enthusiasts on a budget.
Why GIGABYTE A620I AX is better
Price
A620I AX is $40 cheaper
Warranty
A620I AX has a 5-year warranty
Size
A620I AX is Mini-ITX, suitable for compact builds
Why GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, is better
Power Delivery
Z790 UD AC has a 16+1+1 power phase design
Expansion Slots
Z790 UD AC offers three M.2 slots
Connectivity
Z790 UD AC has USB-C 3.2 Gen 2x2
Overall score
Specifications
| Spec | GIGABYTE A620I AX | GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, |
|---|---|---|
| Socket | AM5 | LGA 1700 |
| Memory Support | 2 DIMMs | 4 DIMMs |
| M.2 Slots | 1 | 3 |
| Power Phases | 5+2+1 | 16+1+1 |
| USB Type | USB 3.2 Gen1 Type-C | USB-C 3.2 Gen 2x2 |
Dimension comparison
Overview of GIGABYTE A620I AX and GIGABYTE Z790 UD AC
When comparing the GIGABYTE A620I AX and the GIGABYTE Z790 UD AC, the primary takeaway is their target user base. The A620I AX, priced at $109.99, is designed for AMD enthusiasts, while the Z790 UD AC, which retails for $149.99, caters to users of Intel’s latest processors. This price difference of $40, or about 36%, reflects the distinct markets these motherboards serve.
Performance Capabilities
The GIGABYTE A620I AX supports AMD Ryzen 7000 series processors, which are known for their robust performance in gaming and productivity tasks. It features a 5+2+1 phases digital VRM solution, providing stable power delivery. On the other hand, the GIGABYTE Z790 UD AC supports Intel Core processors from the 12th to the 14th generation, boasting a 16+1+1 hybrid phases digital power design with 60A DrMOS, indicating a more advanced power delivery system. This suggests that the Z790 UD AC may offer superior performance potential, especially under heavy workloads.
Memory Support
Memory compatibility is another crucial aspect where the two motherboards differ significantly. The GIGABYTE A620I AX supports dual-channel DDR5 memory with 2 SMD DIMMs, which is adequate for most users. In contrast, the GIGABYTE Z790 UD AC provides dual-channel DDR5 support with 4 DIMMs, allowing for greater memory expansion and potentially more powerful configurations. This difference may be particularly beneficial for users looking to utilize high-capacity RAM setups.
Expansion Slots
In terms of expansion capabilities, the GIGABYTE A620I AX features a single M.2 slot with PCIe 4.0 support, which is suitable for standard SSDs. However, the GIGABYTE Z790 UD AC offers three M.2 slots, all utilizing PCIe 4.0 x4, as well as PCIe 5.0 support for future-proofing your build. This setup allows for extensive storage options and faster data transfer rates, making the Z790 UD AC a more versatile choice for those needing multiple high-speed drives.
Connectivity Options
Connectivity options are another important factor to consider. The GIGABYTE A620I AX includes USB 3.2 Gen1 Type-C and fast networking capabilities with Wi-Fi 6E and 2.5GbE LAN. In comparison, the GIGABYTE Z790 UD AC offers USB-C 3.2 Gen 2x2, enhancing data transfer speeds significantly. Additionally, it features dual-band Wi-Fi and 2.5GbE LAN, ensuring that users enjoy robust network performance. This advanced connectivity could be crucial for gamers and content creators requiring high-speed internet access.
Design and Cooling Features
The design and thermal management of the two motherboards vary as well. The GIGABYTE A620I AX highlights features such as EZ-Latch for easy GPU installation and RGB Fusion for aesthetic customization. Conversely, the GIGABYTE Z790 UD AC boasts a fully covered MOSFET heatsink, M.2 thermal guards, and ultra-durable armor with a 6-layer PCB, indicating a stronger focus on thermal efficiency and durability. This can be particularly important for users pushing their systems to the limits during intensive tasks.
Warranty and Support
Both motherboards come with a competitive warranty period. The GIGABYTE A620I AX offers a 5-year warranty, which is appealing for users looking for long-term reliability. The Z790 UD AC, while also backed by GIGABYTE’s reputation, does not specify a warranty period in the available data. However, GIGABYTE is known for its reliable customer support, which can provide peace of mind for both products.
Which should you buy?
In conclusion, choosing between the GIGABYTE A620I AX and the GIGABYTE Z790 UD AC ultimately depends on your specific needs and preferences. If you are an AMD user seeking a cost-effective motherboard that supports the latest Ryzen processors, the A620I AX at $109.99 could be the right choice for you. However, if you are leaning towards Intel’s ecosystem and desire advanced features, superior power delivery, and better expansion options, the Z790 UD AC at $149.99 may justify the additional cost. Consider your processor choice, memory needs, and future upgrade plans when making your decision.