ASUS ROG Strix Z890-I Gaming WiFi Review
There is something incredibly appealing about building a high-end gaming PC that doesn't take up half your desk. I've spent plenty of time working with larger motherboards, including my ASUS ROG Maximus Z890 Hero, and while there's no denying the appeal of a full-sized enthusiast board, not everyone wants or needs a massive PC to get the best out of their hardware. That's where the ASUS ROG Strix Z890-I Gaming WiFi comes in.
Mini-ITX motherboards have always involved a few compromises. You get less room for expansion, fewer physical slots and a much tighter space to work in, which can make building and cooling a powerful system more challenging. The expectation is often that going smaller means sacrificing some of the experience you get from a premium ATX motherboard. After spending extensive time with the Z890-I, though, I've found it hard to look at it as a compromise. It's a seriously capable little board that packs an impressive amount of enthusiast-grade hardware into a fraction of the space.
What makes this motherboard particularly interesting is that it isn't simply aimed at people who want a tiny PC for everyday tasks. This is a board designed for people who want to build a genuinely high-end system, use Intel's latest desktop platform and enjoy the sort of performance you'd normally associate with a much larger build. It hasn't missed a beat during my time with it, and in many ways, it feels surprisingly close to using my much larger ROG Maximus Z890 Hero.
Design and build quality: ROG DNA in a Mini-ITX package
One of the first things that stands out about the Z890-I is just how much ASUS has managed to fit onto such a small PCB. Mini-ITX motherboards have a very different set of design challenges compared with standard ATX boards, and when you're dealing with a premium Intel platform, there's a lot of hardware that needs to be accommodated without making the entire layout feel cramped or compromised.
ASUS has done an excellent job of retaining the ROG aesthetic while keeping the design functional. The heatsinks, power delivery components and layered layout give the board the sort of premium appearance I'd expect from the ROG family. It looks and feels like a motherboard designed for enthusiasts rather than a smaller board that has simply been stripped back to hit a price point.
Of course, there are physical limitations. You only get two DDR5 memory slots, a single PCIe expansion slot and two onboard M.2 slots, so you need to plan your build more carefully than you would with the Maximus Z890 Hero. For most gaming systems, though, those limitations aren't necessarily deal-breakers. A single powerful graphics card, a couple of fast NVMe drives and a decent memory kit are enough to build a seriously capable machine.
The important thing is that the board doesn't feel like it's holding the rest of the system back simply because it's small. That's what I appreciate most about it. It gives you the opportunity to build something compact without making the experience feel like you're settling for entry-level hardware.
Performance and stability: It hasn't missed a beat
The biggest compliment I can give the ROG Strix Z890-I is that, throughout my time using it, it has simply done its job. I haven't felt like I needed to babysit the motherboard, constantly work around limitations or worry that choosing a Mini-ITX platform would mean giving up the sort of stability I expect from a premium desktop system.
That's particularly important when you're building a compact PC. Smaller systems can be more challenging to cool, and the space available around the CPU socket, memory and power delivery components is much more restricted. The motherboard is only one part of that equation, of course, and your case, CPU cooler, airflow and power settings all matter. But the Z890-I provides a solid foundation for a high-performance build, with a substantial power delivery design and dedicated heatsinks to help manage the demands of modern Intel processors.
It also supports the features I'd expect from a current enthusiast motherboard, including DDR5 memory tuning, CPU overclocking features and ASUS's suite of BIOS and system-management tools. Having those options available means you can configure the system around your hardware and preferences rather than feeling locked into a basic set of settings.
I wouldn't suggest that a Mini-ITX board can magically overcome poor case airflow or an inadequate cooler. If you're building a powerful system in a tiny enclosure, you still need to think carefully about thermals. However, the Z890-I gives you the sort of platform I'd be comfortable using for a serious gaming PC, rather than something I'd reserve for a low-power build.
And that's really the point. A motherboard should be something you install, configure and then largely forget about while you enjoy using your computer. In my experience, the Z890-I has delivered exactly that sort of dependable experience.
How does it compare with my ROG Maximus Z890 Hero?
This is probably the most interesting comparison for me personally, because I also have experience with the ASUS ROG Maximus Z890 Hero. The Hero is a much larger, more elaborate motherboard, with the additional room that comes with a full-sized enthusiast design. It offers more flexibility for expansion and gives you more options when planning a complicated build.
On paper, the Hero is the board I'd choose if I wanted to maximise expansion, experiment with a wider range of hardware or build a system with more room for additional storage and accessories. That's part of the appeal of a premium ATX motherboard. You have space to work with, and you don't have to make quite as many compromises when deciding how to configure the system.
But here's the thing: the Z890-I gets surprisingly close to the experience of using the Maximus Z890 Hero, just in a much smaller package.
For a gaming PC built around a single graphics card, fast DDR5 memory and a couple of NVMe SSDs, I don't feel that I'm missing a huge amount of the experience that makes the Hero so appealing. The Z890-I still gives me the enthusiast features I care about, modern connectivity, a capable power delivery system and the flexibility to build a high-performance machine.
The differences become more noticeable when you start looking beyond that typical gaming configuration. The Hero gives you more room for expansion and additional flexibility, while the Z890-I requires you to be more deliberate about the hardware you install. Its second M.2 slot also shares bandwidth with the main PCIe graphics slot, meaning the graphics slot operates at x8 when that M.2 slot is occupied. That's worth knowing before planning a build with multiple high-speed devices.
For me, though, those are practical considerations rather than reasons to dismiss the smaller board. If you know what you want from your PC and don't need a heap of expansion slots, the Z890-I can deliver a very similar high-end feel without requiring a large case.
That makes it particularly appealing for anyone who wants a clean, compact gaming setup. You can build a machine with flagship-style components without having a huge tower sitting beside your desk, and I think there's something genuinely satisfying about that.
Features and connectivity: More than enough for a serious gaming PC
A small motherboard has to make every connection count, and this is another area where the Z890-I impresses. Despite its size, ASUS hasn't treated connectivity as an afterthought.
The board includes Wi-Fi 7, Bluetooth 5.4 and 2.5Gb Ethernet, giving you several options for connecting to your network. If you're gaming online, I would still favour a wired connection where practical, but having modern wireless connectivity is useful for compact builds where running an Ethernet cable isn't always convenient.
The rear I/O is also well equipped. You get two Thunderbolt 4 USB-C ports, additional high-speed USB connectivity, HDMI and a BIOS FlashBack button. For a Mini-ITX motherboard, that's a very useful selection, especially if you're connecting modern peripherals, external storage and other devices without wanting to rely on a pile of adapters.
One of the more unusual aspects of the design is the ROG Strix Hive II. Rather than squeezing every audio connection and control onto the rear of the motherboard, ASUS provides this external accessory for audio, additional connectivity and convenient controls. It includes a headphone connection, physical buttons and a volume control, giving you easier access to functions that might otherwise be awkward to reach on a compact system.
The ROG FPS card is another example of ASUS finding ways to work around the limitations of the Mini-ITX form factor. It provides additional connectivity, including SATA ports, through an accessory rather than requiring everything to fit directly onto the main board. It's a clever approach, although it does mean you need to account for the accessory when planning your build.
There is a trade-off here. Some people will prefer a conventional motherboard with all its connections integrated directly into the PCB, and others may not want to deal with extra accessories. Personally, I appreciate the effort to retain functionality without making the board physically larger. It shows that ASUS has thought about how enthusiasts will actually use the motherboard, rather than focusing solely on fitting the smallest possible PCB into a box.
Intel's latest CPUs deserve more attention
One of the reasons I find the Z890-I so appealing is the platform it supports. Intel's Core Ultra desktop processors have faced plenty of criticism, and I think they've been somewhat unfairly overlooked by people who are still comparing everything against the expectations set by previous generations.
The early reception to Intel's Core Ultra 200S processors was mixed, particularly among gamers who wanted a straightforward generational leap in gaming performance. That criticism is understandable. When people upgrade their CPUs, they naturally want to see an obvious improvement in the games they play, and a new product name doesn't automatically justify the cost of a new platform.
However, I don't think that tells the whole story. A modern PC isn't used exclusively for gaming, and performance needs vary significantly between users. Gaming, multitasking, productivity, content creation and general desktop use all place different demands on a processor. Depending on the workload and the specific CPU, Intel's newer platform can make a compelling case, particularly for people who want a versatile high-end PC rather than a system built around one benchmark.
I'm also reluctant to judge an entire platform solely on the reception it received at launch. Processor performance depends on the workload, memory configuration, motherboard settings and the rest of the system. It's worth looking at the actual results that matter to you rather than assuming that a platform is automatically a poor choice because it didn't dominate every gaming benchmark.
For my money, Intel's newer desktop CPUs deserve a closer look from anyone building a PC today. Pairing one with a well-equipped motherboard like the Z890-I gives you access to modern connectivity, fast memory, PCIe 5.0 storage support and a platform capable of powering a high-end system.
I wouldn't claim that every Intel CPU is the best choice for every gamer, because that's simply not true. If your only priority is maximising gaming frame rates, you should compare the specific processor you're considering against the competition in the games you actually play. But I do think the current Intel platform deserves more consideration than it sometimes receives.
Is it the best-value entry into a high-end PC?
This is where the ROG Strix Z890-I becomes particularly interesting. If you're planning a compact high-end PC, the motherboard can be a significant part of the overall cost, especially when you're looking at enthusiast-grade hardware. The challenge is finding a board that offers the features you need without paying for a heap of expansion and extras you may never use.
The Z890-I makes a strong argument for keeping things focused. You can pair it with a powerful Intel processor, fast DDR5 memory, a modern graphics card and high-speed NVMe storage to create a system that feels genuinely premium. You aren't forced into a full-sized motherboard simply because you want a high-end CPU and modern platform features.
I also think there's a lot to be said for investing in the components that make the biggest difference to your experience. For a gaming-focused build, your graphics card, processor, memory and storage choices are likely to matter far more than having several unused PCIe slots. If the Z890-I provides the connectivity you need, a smaller motherboard can be a sensible way to build a powerful PC without paying for capabilities you won't use.
That said, Mini-ITX isn't automatically the cheaper option. Premium small-form-factor components can carry a price premium, and a compact case or specialised cooling setup can add to the total cost. You also need to consider the cost of the Z890-I itself compared with more affordable ATX boards. The best value depends on the complete build, not just the motherboard.
But when I look at the Z890-I as the foundation for a high-end Intel system, I can see the appeal. It delivers an enthusiast-level feature set in a compact design, and it doesn't force you to compromise on the overall ambition of your build. For someone who values a smaller footprint just as much as performance, that combination is compelling.
I'd go as far as saying that, depending on local pricing and the rest of your component choices, this could be one of the most appealing ways to get into a high-end Intel PC without going overboard on the motherboard itself. It's not necessarily the cheapest route, but it can be a very sensible one.
Things to consider before buying
As much as I like the Z890-I, it's not the right motherboard for everyone. The biggest consideration is the Mini-ITX form factor itself. With only two memory slots and a single expansion slot, you need to plan your build around what you actually intend to use. If you want multiple PCIe cards, lots of internal storage or more flexibility for future expansion, a larger motherboard will be a better fit.
Storage deserves particular attention. The board offers two onboard M.2 slots, but using the second slot affects the available bandwidth of the primary PCIe graphics slot. For many gaming builds, this won't be a major concern, but it's something worth checking if you're planning a particularly demanding configuration.
You should also think about cooling. The motherboard is capable, but a compact case can make it more difficult to manage the temperatures of a high-performance CPU and graphics card. Choosing a suitable case, cooler and fan configuration is important if you want your system to remain quiet and perform consistently under sustained loads.
Finally, don't buy this motherboard simply because it carries the ROG name. It's a premium product, and you should make sure you're getting value from its features. If you're building a conventional mid-tower gaming PC and have no interest in a smaller system, a full-sized Z890 board may give you more expansion flexibility for your money.
For anyone specifically interested in a compact, high-end build, however, these limitations are easier to accept. The Z890-I is designed around a particular goal, and I think it achieves that goal extremely well.
Final verdict
The ASUS ROG Strix Z890-I Gaming WiFi is one of those motherboards that reminds me how capable Mini-ITX systems have become. It takes the foundations of a premium Intel desktop platform and packs them into a remarkably compact design, without losing the enthusiast features that make a high-end motherboard appealing.
What stands out most to me is how close it feels to my ROG Maximus Z890 Hero in everyday use. The Hero remains the more flexible board, with extra room for expansion and a layout better suited to elaborate builds, but the Z890-I delivers an experience that feels surprisingly close when you're building a more conventional gaming PC. During my time with it, it hasn't missed a beat, and I've had no reason to feel that choosing the smaller board was a mistake.
I also think Intel's latest desktop platform deserves more attention from people planning their next build. The Core Ultra processors aren't the automatic first choice for every gaming-focused system, but they shouldn't be dismissed without considering the complete package. Pairing one with the Z890-I creates a compelling foundation for a modern, high-performance PC, particularly if you want a smaller system that still feels premium.
The main drawbacks are the inevitable limitations of Mini-ITX, along with the need to plan storage, expansion and cooling more carefully. The price also needs to make sense against larger Z890 motherboards, especially if you don't specifically need the smaller form factor.
For me, though, the appeal is clear. This is a compact motherboard with big potential, and one I'd happily consider for a high-end PC build. If I had to put a score on it, I'd give the ASUS ROG Strix Z890-I Gaming WiFi a 9/10. Not because it offers absolutely everything a full-sized enthusiast board can, but because it does an outstanding job of delivering a premium experience in a much smaller package.
