ASRock AMD B850i Lightning WiFi 6E Socket AM5 vs ASUS Z790 GAMING WIFI7 ATX motherboard with PCIe
Updated August 2026 — ASRock AMD B850i Lightning WiFi 6E Socket AM5 wins on form factor and memory speed, ASUS Z790 GAMING WIFI7 ATX motherboard with PCIe wins on price.
The ASRock B850i Lightning excels in overclocking and compact design, while the ASUS Z790 GAMING WIFI7 offers better connectivity and is more budget-friendly.
Why ASRock AMD B850i Lightning WiFi 6E Socket AM5 is better
Overclocking
Supports extreme memory speeds up to 8200+ MHz (OC)
Compact Design
Mini-ITX form factor ideal for small builds
Storage Performance
Includes PCIe Gen5 M.2 slots for faster SSDs
Why ASUS Z790 GAMING WIFI7 ATX motherboard with PCIe is better
Price
More budget-friendly at $149.99
Connectivity
Includes Thunderbolt (USB4) support
Expansion
Standard ATX form factor allows more components
Overall score
Specifications
| Spec | ASRock AMD B850i Lightning WiFi 6E Socket AM5 | ASUS Z790 GAMING WIFI7 ATX motherboard with PCIe |
|---|---|---|
| Socket Type | AM5 | LGA 1700 |
| Memory Support | DDR5 8200+ MHz | DDR5 |
| M.2 Slots | 2 (Gen5/Gen4) | 3 (Gen5/Gen4) |
| LAN | Killer 2.5G | Realtek 1Gb |
| USB Ports | USB 3.2 Gen2 Type-C | USB 3.2 Gen2x2 Type-C |
Dimension comparison
Overview of the ASRock AMD B850i Lightning and ASUS Z790 GAMING WIFI7
The ASRock AMD B850i Lightning is priced at $179.99, while the ASUS Z790 GAMING WIFI7 comes in at a lower price of $149.99, making it about 17% cheaper. Both motherboards cater to different user needs and preferences, targeting gaming and productivity setups with high-performance components.
The ASRock motherboard supports AMD Ryzen processors from the 9000, 8000, and 7000 series, while the ASUS model is compatible with Intel's LGA 1700 socket, supporting the 12th, 13th, and 14th generation processors. This fundamental difference in chipset compatibility influences the choice between these two motherboards significantly, depending on the user's preferred CPU brand.
Design and Form Factor
The ASRock B850i Lightning features a compact Mini-ITX design, making it ideal for small form factor builds, while the ASUS Z790 GAMING WIFI7 adopts a standard ATX form factor. The Mini-ITX format of the ASRock motherboard measures 170x170mm, which is perfect for users who prioritize space efficiency in their builds.
In contrast, the ASUS motherboard provides more expansion options thanks to its larger ATX design, allowing for a wider range of components, including multiple GPUs and advanced cooling solutions. The choice between these two designs is crucial depending on the user's case size and desired build aesthetics.
Power Delivery and Stability
The ASRock B850i Lightning boasts a premium 10+1+1 phase power design with a 110A Smart Power Stage, ensuring stable performance even in compact setups. This robust power delivery system is particularly beneficial for users looking to overclock their Ryzen processors.
On the other hand, the ASUS Z790 GAMING WIFI7 features a 14+1 DrMOS power solution, which also emphasizes stability and performance. This advanced power delivery system supports the latest Intel processors effectively, making it suitable for high-performance gaming and multitasking. Both motherboards excel in power delivery, yet the choice may depend on the user's processor preference.
Memory and Overclocking Capabilities
The ASRock B850i Lightning supports dual-channel DDR5 memory configurations with speeds up to 8200+ MHz (OC), providing potential for extreme overclocking. This feature makes it an excellent choice for enthusiasts who wish to maximize their memory performance.
Conversely, the ASUS Z790 GAMING WIFI7 supports DDR5 memory as well, but specific overclocking capabilities are not highlighted. However, it does utilize ASUS Enhanced Memory Profile II technology, which can aid in memory tuning and stability. For users focused on overclocking, the ASRock board may present a distinct advantage.
Storage Options
In terms of storage, the ASRock B850i Lightning includes both Blazing M.2 (PCIe Gen5x4) and Hyper M.2 (PCIe Gen4x4) slots that maximize storage performance for high-speed SSDs. This configuration is ideal for users who want to leverage the latest storage technologies for faster load times and data transfers.
The ASUS Z790 GAMING WIFI7 also provides flexibility with three M.2 slots, accommodating PCIe 5.0 and PCIe 4.0 drives. This offers ample options for users who need extensive storage solutions. Both motherboards excel in this area, but the ASRock's emphasis on PCIe Gen5 may appeal more to those seeking cutting-edge storage performance.
Networking Features
The ASRock B850i Lightning includes advanced networking capabilities, featuring Killer 2.5G LAN and WiFi 6E with Bluetooth. This setup ensures that users enjoy premium wired and wireless connectivity, which is crucial for online gaming and high-bandwidth tasks.
In comparison, the ASUS Z790 GAMING WIFI7 also supports next-generation connectivity with Wi-Fi 7 and Realtek 1Gb LAN. This makes it a strong contender for users who prioritize fast internet speeds and stable connections. Both motherboards provide excellent networking options, but the choice may come down to personal preference regarding wired versus wireless performance.
Connectivity and Expansion
The ASRock B850i Lightning features multiple USB options, including a USB 3.2 Gen2 Type-C port, which can deliver speeds up to 40Gb/s with compatible processors. This is particularly beneficial for users who frequently connect high-speed devices.
Similarly, the ASUS Z790 GAMING WIFI7 boasts USB 3.2 Gen2x2 Type-C and front USB 3.2 Gen 1 Type-C ports, ensuring fast data transfer rates as well. The ASUS model also supports Thunderbolt (USB4), providing additional connectivity options. Both motherboards excel in terms of connectivity, though the inclusion of Thunderbolt in the ASUS model may give it an edge for users needing versatile connections.
Which should you buy?
Choosing between the ASRock AMD B850i Lightning and the ASUS Z790 GAMING WIFI7 ultimately depends on your specific needs and preferences. If you're building a compact system and are invested in AMD Ryzen processors, the ASRock B850i Lightning, with its superior overclocking capabilities and advanced storage options, could be the better choice at $179.99.
Conversely, if you prefer Intel processors and value a more extensive range of connectivity options, the ASUS Z790 GAMING WIFI7 is more budget-friendly at $149.99 and offers robust performance with PCIe 5.0 and Wi-Fi 7. Both motherboards are strong contenders in their categories, but your CPU choice and build requirements will guide your final decision.

