ASRock AMD B850i Lightning WiFi 6E Socket AM5 vs ASUS TUF Gaming Z790
Updated August 2026 — ASRock AMD B850i Lightning WiFi 6E Socket AM5 wins on size and price, ASUS TUF Gaming Z790 wins on cooling and power.
The ASRock AMD B850i Lightning offers excellent value for compact builds, while the ASUS TUF Gaming Z790-Plus provides superior features for gamers. Choose based on your CPU preference and system requirements.
Why ASRock AMD B850i Lightning WiFi 6E Socket AM5 is better
Price
ASRock is $20 cheaper
Size
Mini-ITX design for compact builds
Memory Speed
Supports up to 8200 MHz overclocking
Why ASUS TUF Gaming Z790 is better
Power Delivery
16+1 DrMOS for better stability
Connectivity
Includes Thunderbolt 4 support
Cooling
Comprehensive cooling solutions available
Overall score
Specifications
| Spec | ASRock AMD B850i Lightning WiFi 6E Socket AM5 | ASUS TUF Gaming Z790 |
|---|---|---|
| Socket | AM5 | LGA 1700 |
| DDR Support | DDR5 | DDR5 |
| M.2 Slots | 2 | 4 |
| WiFi | 6E | 6 |
| LAN | 2.5G | 2.5G |
Dimension comparison
Overview of the Products
The ASRock AMD B850i Lightning and the ASUS TUF Gaming Z790-Plus are both high-performance motherboards targeting different user bases. The ASRock board is priced at $179.99, making it about 17% cheaper than the ASUS model, which retails for $199.99. Each motherboard is designed with unique features catering to distinct needs, whether for compact builds or robust gaming setups.
Design and Form Factor
The ASRock AMD B850i Lightning features a Mini-ITX compact design, measuring 170x170mm, which is ideal for small form factor builds. This makes it perfect for users looking to save space while still supporting powerful AMD Ryzen processors. In contrast, the ASUS TUF Gaming Z790-Plus has a traditional ATX form factor, providing more room for additional components and cooling solutions. This difference means that the ASRock is tailored for users building compact systems, while the ASUS motherboard is geared towards users who prefer larger cases and more expandability.
Processor Compatibility
The ASRock AMD B850i Lightning supports the latest AMD Ryzen 9000, 8000, and 7000 series processors, making it an excellent choice for AMD enthusiasts. On the other hand, the ASUS TUF Gaming Z790-Plus is designed for Intel's 12th, 13th, and 14th Gen processors, which ensures compatibility with the newest Intel hardware. This distinction highlights the importance of choosing a motherboard that aligns with the user's preferred CPU brand, as each motherboard is optimized for its respective platform.
Memory Support
The ASRock model offers two DDR5 DIMM slots, supporting dual-channel configurations with overclocking speeds up to 8200 MHz. This high-speed memory support is advantageous for users aiming for maximum performance in their builds. Meanwhile, the ASUS motherboard also supports DDR5 memory but doesn't specify maximum speeds, although it does feature four M.2 slots for NVMe SSDs, allowing for significant storage expansion. The ASRock’s faster memory speed may appeal to overclocking enthusiasts, while the ASUS model provides more storage flexibility.
Power Delivery and Stability
The ASRock AMD B850i features a premium power delivery system with a 10+1+1 phase design, ensuring stable performance in compact builds. This is especially important for maintaining system stability during demanding tasks. The ASUS TUF Gaming Z790-Plus boasts a more robust 16+1 DrMOS power solution, which is designed with military-grade components for enhanced durability and performance. Thus, users seeking longevity and reliability may prefer the ASUS motherboard, whereas those building smaller systems might find the ASRock adequate for their needs.
Connectivity Options
Both motherboards come equipped with advanced connectivity features. The ASRock model includes Killer 2.5G LAN and WiFi 6E with Bluetooth, providing premium wired and wireless connectivity options. In contrast, the ASUS TUF Gaming Z790-Plus also features WiFi 6 and a 2.5Gb LAN, along with Thunderbolt 4 support. This makes the ASUS board more versatile in terms of peripheral connectivity, benefiting users with multiple devices that require fast data transfer.
Cooling Solutions
Effective cooling is crucial for high-performance motherboards, and both models address this need. The ASRock AMD B850i Lightning incorporates a smart power stage for efficient thermal management, suitable for compact builds. The ASUS TUF Gaming Z790-Plus, however, goes further with a comprehensive cooling system that includes VRM heatsinks, an M.2 heatsink, and fan headers, making it ideal for users who plan to push their systems to the limit during gaming sessions. If cooling is a primary concern, the ASUS motherboard offers superior capabilities.
Price and Value
With the ASRock AMD B850i Lightning priced at $179.99 and the ASUS TUF Gaming Z790-Plus at $199.99, the ASRock model presents a more budget-friendly option. The price difference of about $20 could be significant for users on a tighter budget, especially when building a compact system. However, the ASUS motherboard’s additional features and enhanced durability may justify the higher price for gamers looking for robust performance and long-term reliability.
Which should you buy?
Choosing between the ASRock AMD B850i Lightning and the ASUS TUF Gaming Z790-Plus ultimately depends on your specific needs. If you're looking for a compact motherboard that excels in performance for AMD processors, the ASRock model is an excellent choice at a lower price point. However, if you prefer Intel processors and require a more robust power delivery system along with extensive connectivity options, the ASUS motherboard may be worth the extra investment. Evaluate your requirements carefully to select the motherboard that best fits your build.

