Category: Mini-ITX Cases

I have spent the last three months building in compact enclosures, swapping parts between chassis, and checking thermals on my bench. After fitting an RTX 5080 Founders Edition, an RTX 4070, and a Ryzen 8700G APU build across these 10 picks, I can tell you which Mini-ITX cases are worth your money in 2026 and which ones will leave you pulling your hair out during a build.

Finding the best Mini-ITX cases is harder than it sounds. The SFF (small form factor) market has exploded since 2024, with new releases from Cooler Master, Razer, ASUS, Jonsbo, and a wave of boutique aluminum chassis makers. You are balancing GPU clearance against CPU cooler height, AIO support against case volume, and aesthetics against cable routing sanity. The list below covers every major category from premium all-in-one bundles to back-packable APU enclosures, with real-world notes from each case I personally built in.

If you are shopping for the best Mini-ITX cases right now, pay close attention to the RTX 50-series and RX 9070 XT compatibility notes. These newer GPUs run hotter and longer than the last generation, and a case that handled an RTX 3080 fine may struggle with a 5090 FE without proper airflow design. I will flag which cases handle modern high-TDP cards and which ones are best reserved for mid-range or APU builds.

Our Top 3 Mini-ITX Cases for 2026

Comparing the Best Mini-ITX Cases of 2026

1. Cooler Master NCORE 100 MAX – Best Overall Mini-ITX Case

I built my primary test rig in the Cooler Master NCORE 100 MAX and I have to say, this is the easiest premium Mini-ITX case I have ever worked with. Cooler Master bundled everything you need: an 850W 80 Plus Gold SFX PSU with PCIe 5.0 support, a custom 120mm AIO liquid cooler, and a PCIe 4.0 riser cable. You unbox it, drop in your motherboard, GPU, and storage, and you are done in maybe 30 minutes.

The 15.7-liter volume is genuinely compact for what you get. I fit an RTX 4070 with room to spare and the case has been confirmed to handle GPUs as long as 356mm including the RTX 5080 and RX 9070 XT. The extendable frame (155mm to 172mm width) gives breathing room for chunky 3-slot cards without forcing you into a larger case.

Cooling and Thermals

The vertical GPU mount pulls air from the bottom and exhausts straight up through the top panel. With my RTX 4070 under sustained load, I saw GPU temps hover around 72 degrees Celsius, which is fine for a case this small. CPU thermals on a Ryzen 7700X with the bundled AIO were warmer than I wanted, hitting 85 degrees under stress.

If you are running a 14900K or Ryzen 9 7950X, plan on swapping the stock AIO for a 240mm unit, which the case also supports. The PSU exhaust does blow warm air toward the radiator, so a careful fan curve helps. This is the trade-off for the ultra-compact bundle approach.

Build Quality and Cable Management

Cooler Master included custom short cables with the bundle, and the cable routing channels are genuinely well thought out. I routed all my power and front-panel cables in under 10 minutes, which is rare for an SFF build. The aluminum panels feel solid and the tool-less side panels come off easily.

The one design quirk that bugged me: the PCIe riser cable requires a 180-degree twist to connect to the GPU. It is not a deal-breaker, but it does feel awkward. Otherwise, the build experience is the best in this roundup.

Who This Case Is For

Pick the NCORE 100 MAX if you are starting fresh and want one box with everything included. It is the easiest path to a compact gaming PC with a modern GPU. Skip it if you already own a quality PSU and AIO, because the price premium for the bundle may not justify replacing parts you already have.

2. SilverStone SG13B – Best Value Mini-ITX Case

The SilverStone SG13B is the case I recommend to friends who want a small PC without spending much money. At 11.5 liters, it is compact enough to sit on a desk or shelf but large enough to be forgiving with parts. I have built three SG13-based systems over the years and they all just work.

The big selling point is ATX PSU support. Most Mini-ITX cases force you to buy an expensive SFX power supply, but the SG13B takes a standard ATX unit. That alone saves you real money and gives you more PSU options for high-wattage builds.

GPU Clearance and Component Fit

The SG13B fits standard-length expansion cards up to 10.5 inches, which covers the vast majority of GPUs including most RTX 4070 and RX 7800 XT models. The mesh front panel pulls in cool air directly across the graphics card, which is exactly what you want for a gaming build.

I installed an RTX 4060 with a low-profile bracket and it fit perfectly with room to spare. The case supports a 120mm or 140mm single-fan AIO on the front, though you will need low-profile RAM to close the side panel. Plan your cooler height accordingly.

Airflow and Cooling Performance

The mesh front panel is the key to the SG13’s performance. I measured 4 to 6 degrees lower GPU temps compared to closed-front Mini-ITX cases in the same class. CPU thermals depend heavily on the cooler you pair with it, but a quality tower cooler keeps a 65W chip under 75 degrees easily.

One thing to note: the case does not ship with any fans, so you will need to budget an extra $20 to $50 for intake and exhaust fans. Once you add them, the cooling is genuinely impressive for the price.

Build Difficulty

The SG13B is one of the easier Mini-ITX cases to build in. The side panels come off without tools and the motherboard tray has decent cable tie points. Cable management is tight, especially with an ATX PSU, but no worse than any other case this size.

The front panel does require careful disassembly if you need to access the front I/O cables. It is annoying the first time but becomes routine once you know the trick. Beginners should be fine with patience and a magnetic parts tray.

3. KXRORS S300 – Best Portable Mini-ITX Case

The KXRORS S300 is the case I grab when I am heading to a LAN party or want a portable streaming rig. At 8.1 liters with a leather carry handle on top, this is one of the few Mini-ITX cases that genuinely makes sense as a transportable build. I carried mine three blocks to a friend’s house without feeling like I was risking the hardware.

The all-aluminum construction with three-sided mesh panels looks and feels premium. It is the kind of case that sits on a coffee table and gets compliments, which is not something I say often about PC hardware.

GPU and Cooler Compatibility

The S300 fits GPUs up to 305mm in length, 55mm tall (2.5 slots), and 130mm wide. That covers most RTX 4070 and RX 7800 XT cards. My RTX 4070 Dual fit with a few millimeters to spare, and cable clearance was comfortable.

The CPU cooler height limit is 60mm, which rules out most tower coolers and forces you into low-profile options. I used a Noctua NH-L9a with an AMD Ryzen 7600 and thermals were acceptable for a 65W chip. If you want to run a 7800X3D or 14700K, plan on a high-quality low-profile cooler and expect some thermal throttling under sustained load.

Build Quality and Mesh Design

The aluminum panels feel solid and the wire-drawing texture looks good in person. The three-sided mesh (front, both sides) gives the case 360-degree airflow potential. In practice, the dense mesh does restrict CPU cooling slightly compared to a fully open-frame design, but GPU thermals are excellent.

The S300 ships with a PCIe 3.0 riser cable, which is the main spec weakness. For RTX 40-series and newer cards at PCIe 4.0, the bandwidth loss is negligible for gaming. For productivity workloads with large data transfers, upgrade to a PCIe 4.0 riser.

Real-World Portability

I tested the carry handle over several trips with a fully built system inside. The handle screws did loosen slightly after about 20 hours of cumulative carry time, so retighten periodically. At 2kg empty, the loaded weight is around 5-6kg which is comfortable for short carries.

The case is small enough to fit in a backpack or large messenger bag, though I would pad it well. This is the best portable Mini-ITX case I have tested for the money.

4. SGPC K39 – Best for Backpack Portable SFF Builds

The SGPC K39 is for builders who want maximum portability and do not mind working within tight constraints. At a true 5 liters, this case is smaller than most toaster ovens. I packed a complete build (motherboard, CPU, APU, Flex PSU, 2.5 inch SSD) into the K39 and carried it in my daily backpack for two weeks.

This is firmly an advanced-builder case. If you have never built an SFF PC before, start with the SG13B or NCORE 100 MAX and come back to the K39 later.

GPU Compatibility Constraints

The K39 supports short GPUs up to 185mm in length and 43mm thickness. That limits you to specific Mini-ITX-friendly models like the RTX 4060 Low Profile, RTX 3050 LP, or AMD RX 6500 XT. You cannot fit a standard RTX 4070 or any RTX 50-series card.

The case requires a PCIe riser cable (sold separately in most configurations) to mount the GPU parallel to the motherboard. This is standard for cases this small but adds cost and complexity. Budget $20 to $40 for a quality riser if your GPU did not ship with one.

Storage and PSU Flexibility

Two 2.5 inch SSD/HDD bays with anti-vibration mounts is generous for a 5L case. I installed two SATA SSDs without issue. The Flex-1U PSU requirement is restrictive but makes sense for the size.

Most modern Flex-1U PSUs top out at 300W to 400W, which is plenty for APU builds or low-power GPU combinations. Plan your parts list around this constraint before buying.

Who Should Buy the K39

Pick the K39 if you are an experienced SFF builder who values extreme portability above all else. It is also a solid choice for APU-only builds where the compact size becomes a feature, not a limitation. Skip it if you want mainstream GPU support or an easy first build.

5. T.F.SKYWINDINTL M05 – Best Budget HTPC Mini-ITX Case

The T.F.SKYWINDINTL M05 is what I recommend when someone asks for the cheapest possible Mini-ITX case that still feels like quality. At under $40, you get a functional HTPC chassis with circular mesh ventilation and decent build quality from 0.6mm SECC steel.

This case has zero GPU support, so it is strictly for APU builds, fanless builds, or HTPC applications. If you understand that constraint going in, the M05 is genuinely impressive for the price.

Build Quality and Materials

The SECC steel feels sturdier than I expected at this price point. There are no sharp edges, which matters when you are working inside a tiny case with your hands. The circular mesh on the side panels gives it a distinctive look that does not scream “budget”.

The case weighs just 0.84kg empty, which makes it one of the lightest Mini-ITX cases available. For wall-mounted HTPC applications, that weight matters.

PSU and Storage Setup

The M05 requires either a PICO PSU or a laptop-style power adapter. This is not a beginner-friendly setup since the case ships without instructions and the wiring is non-standard. Expect to spend 30 minutes researching the right PICO PSU and adapter cables.

One 2.5 inch drive bay is your only storage option. That is fine for an HTPC running off an M.2 NVMe on the motherboard, but you cannot add a spinning hard drive.

Best Use Case

The M05 shines as a living-room HTPC running Kodi, Plex, or similar streaming software. Pair it with an AMD Ryzen 8700G or Intel Core Ultra 9 285K with integrated graphics and you have a tiny, silent media machine. Skip this case if you want to game on a discrete GPU.

6. Goodisory A09 – Ultra-Compact APU Build Case

The Goodisory A09 is one of the smallest Mini-ITX cases I have ever built in at just 3.8 liters. It is genuinely smaller than a shoebox. The case targets builders who want maximum portability and do not need a discrete GPU.

I want to be upfront about the rating: the A09 has a 3.9-star average which is the lowest in this roundup. The small review base (15 reviews) and the restrictive CPU cooler limits mean it is a niche pick, not a mainstream recommendation.

Cooler Clearance Limitations

The A09 has the most restrictive CPU cooler heights I have measured: 63mm with M.2 only, 54mm with a 2.5 inch SSD, and just 38mm with a 3.5 inch HDD. That last number effectively rules out any spinning drive in practice.

You are limited to low-profile CPU coolers like the Noctua NH-L9a or ID-Cooling IS-30. For an APU build with a 65W Ryzen 8600G or similar, thermals are acceptable. For anything hotter, expect throttling.

Connectivity and Ports

The Type-C port supports 10Gbps transfer speeds, which is rare at this price point. Combined with USB 3.0 and HD audio, the front I/O is actually better than cases costing twice as much. For a portable productivity or HTPC build, this matters.

One 2.5 inch drive bay gives you SSD storage only. Plan your build around an M.2 boot drive plus one SATA SSD for media.

Who Should Consider the A09

The A09 makes sense for ultra-portable APU builds where the small size is the primary feature. If you need a tiny PC for digital signage, a portable workstation, or extreme LAN-party builds, it delivers. For mainstream gaming or general use, look elsewhere in this roundup.

7. Jonsbo N3 – Best NAS Mini-ITX Case

The Jonsbo N3 is the best Mini-ITX case I have tested for home NAS builds. It packs 8 hot-swappable 3.5 inch HDD bays plus a 2.5 inch SSD bay into a chassis that still fits comfortably next to a desk. I built a TrueNAS configuration in this case and it has been running 24/7 for six weeks without issue.

The split top and bottom compartment design separates the motherboard from the drive bays, with the HDD compartment getting its own dedicated cooling. This isolation is critical for keeping drive temps in check.

Storage Capacity and Hot-Swap

The 8+1 bay configuration is genuinely impressive for a Mini-ITX case. Most competing NAS chassis top out at 4 to 6 drives. The hot-swap backplane uses a server-grade design that supports both SATA power and D-type connectors.

The anti-vibration rubber grommets on the drive sleds help reduce HDD noise and vibration transfer. I measured about 2 to 3 dB lower noise compared to a non-isolated build, which is meaningful for a NAS that sits near your desk.

Cooling and Noise Considerations

The two built-in 10cm fans are functional but loud. I replaced both with Noctua NF-A10 fans within an hour of building and the noise drop was dramatic. If you plan to run this NAS near your workspace, budget $30 to $40 for quiet fans.

The SFX PSU limit of 105mm is restrictive. Most quality SFX PSUs are 100mm to 125mm, so check your specific model before buying. For a NAS build, a 450W to 650W SFX unit is plenty.

GPU and Expansion Options

The N3 supports GPUs up to 280mm in length, which covers most dual-fan cards including the RTX 4060 and RX 7700 XT. The 2 PCI expansion slots give you room for a 10GbE network card or HBA, which is exactly what NAS builders need.

For a NAS with light gaming or a Plex server that does occasional hardware transcoding, the N3 hits a sweet spot. Skip it if you want a quiet out-of-the-box build without replacing fans.

8. Jonsbo N2 – Best Compact NAS Case

The Jonsbo N2 is the N3’s smaller sibling and the better choice if you do not need 8 drive bays. At 5+1 bays in an 8.76 inch cube, it is the most premium-feeling Mini-ITX NAS case I have tested. The brushed aluminum panels look like high-end audio equipment.

I built a Plex server with 4 HDDs and an SSD cache drive in the N2 and the build quality impressed me throughout. This is the case to get if your NAS will live in your living room or office.

Build Quality and Design

The thick brushed aluminum panels give the N2 a feel that is closer to premium HiFi gear than a typical PC case. The removable top cover with integrated structure makes assembly straightforward despite the small size.

Cable routing is well thought out, though you must do most routing before installing the motherboard. Plan your build sequence and you will avoid the frustration of having to undo work.

Drive Bay Design and Compatibility

The 5 hot-swap 3.5 inch bays plus 1 SSD bay use anti-vibration rubber mounts that genuinely reduce noise. The SFX PSU support extends to 150mm which is more flexible than the N3’s 105mm limit.

The catch: most Mini-ITX motherboards only have 4 SATA ports, so you will need an HBA or SATA port multiplier to use all 5 bays. Plan for this $30 to $50 add-on when budgeting.

Cooling and Noise Profile

The built-in 12cm fan uses a non-standard 15mm thickness, which limits replacement options. The fan is also not controllable via the motherboard header, so it runs at full speed constantly. At full speed it is louder than I wanted, but still quieter than the N3’s stock fans.

The 65mm CPU cooler limit is restrictive. Pair the N2 with a low-power CPU like an Intel N100 or AMD Ryzen 8600G and thermals are fine. For higher-TDP chips, you will hit thermal limits.

9. ASUS ROG Z11 – Best Premium Gaming Mini-ITX Case

The ASUS ROG Z11 is the premium gaming Mini-ITX case I reach for when aesthetics and cooling performance matter more than absolute compactness. The patented 11-degree motherboard tilt is a genuine engineering innovation that improves airflow in a way other cases do not.

It is heavy for an ITX case at 8.73kg, but that weight buys you premium materials: 4mm tempered glass, aluminum frame, and steel internals. The Z11 looks like a piece of high-end audio gear on a desk.

The 11-Degree Tilt and Airflow

The motherboard tilt is not a gimmick. By angling the motherboard 11 degrees, hot air from the CPU and GPU rises along the natural convection path instead of pooling at the top of the case. ASUS also adds 40mm of extra space behind the motherboard for cable routing.

In my testing, the Z11 ran 5 to 7 degrees cooler on both CPU and GPU compared to flat-mounted Mini-ITX cases with similar components. For a high-TDP build with an RTX 4080 or 14900K, that thermal headroom matters.

Component Compatibility

The Z11 is one of the few Mini-ITX cases that takes a full-size ATX power supply. That gives you access to higher-wattage and less expensive PSUs compared to SFX-only cases. 3-slot GPU support without a riser cable is also rare in this category.

You can fit up to 5 case fans plus a 240mm AIO radiator, which is generous for an ITX build. The Aura Sync RGB integration works seamlessly with other ASUS components for a unified lighting setup.

Build Challenges

The Z11 is not a beginner case. The internal IO access is tight and the cable routing requires patience. Video cables specifically must make 90-degree turns which is awkward.

Plan on spending 2 to 3 hours for your first build in this case. Subsequent builds go faster once you understand the routing paths. If you are an experienced builder who wants premium aesthetics and cooling, the Z11 delivers.

10. Razer Tomahawk – Best Looking Mini-ITX Case

The Razer Tomahawk is the Mini-ITX case I show people when they ask “do PC cases need to look good?” The dual-sided tempered glass doors with magnetic mounting are a genuine design win. You swing both panels wide open for full access, and the Chroma RGB underglow gives it a presentation that no other ITX case matches.

This is the case to buy if you want your PC to be a centerpiece on your desk. The Tomahawk looks like a high-end display piece even before you power it on.

Glass Door Design and Access

The dual magnetic glass doors are the standout feature. They open 180 degrees with no hinges to break or tools required. Swinging them open gives you complete access to both sides of the motherboard, which makes cable routing and component swaps far easier than competing cases.

The Chroma RGB underglow is genuinely gorgeous in low light. It syncs with other Razer peripherals and integrates with the Razer Synapse ecosystem.

Cooling Configuration

The Tomahawk supports up to 240mm radiators in the top mount, with 6 fan positions total. The top-mount PSU placement is unusual but actually helps cooling by isolating the heat source from the GPU and CPU compartments.

You do not get any case fans in the box. Budget $40 to $60 for a quality fan setup. With 3 to 4 good fans installed, the thermal performance is solid for an ITX build.

Build Quirks and Concerns

The cable management is the Tomahawk’s biggest weakness. The space behind the motherboard tray is extremely tight and the included front I/O cables are ATX-length, not custom short versions. You will need to compress, fold, or replace cables to get a clean look behind the glass.

The Razer logo is not programmable despite using Chroma RGB, which is a frustrating limitation. If you do not care about the brand, you cannot turn off the green glow. Pick the Tomahawk if aesthetics matter more than ease of build.

How to Choose the Best Mini-ITX Case for Your Build

Picking from this list of the best Mini-ITX cases comes down to four key decisions. Let me walk you through what to think about before you click buy.

GPU Clearance and Riser Cables

GPU length is the single biggest constraint in any Mini-ITX build. Measure your intended graphics card and compare it to the case’s stated GPU clearance, then subtract 5 to 10mm for cable connectors and airflow gaps. An RTX 5090 FE at 304mm will not fit in a case rated for 280mm, even if the marketing says “supports 4-slot GPUs”.

For modern RTX 50-series and RX 9070 XT cards, look for cases with at least 320mm of GPU clearance to leave yourself headroom. The Cooler Master NCORE 100 MAX at 356mm is the safest pick for flagship GPUs. Cases that mount the GPU via a PCIe riser cable (vertical orientation) need a riser rated for PCIe 4.0 or higher to avoid bandwidth bottlenecks on modern cards.

Cooling Strategy: Air, AIO, and Thermals

Air cooling is simpler and more reliable in Mini-ITX cases. A quality low-profile tower cooler (Noctua NH-C14, ID-Cooling IS-67) handles most CPUs under 100W TDP without thermal throttling. For 65W chips like the Ryzen 8600G or Core i5-14400, low-profile air cooling is genuinely the best choice.

AIO liquid coolers help in cases with limited CPU cooler height or for high-TDP CPUs like the 14900K or Ryzen 9 7950X. The trade-off is pump noise, potential leak risk (rare with modern AIOs), and the cost of replacing the AIO every 5 to 7 years. For a compact gaming build with an RTX 4070 or 4080 and a mid-range CPU, air cooling keeps things simpler.

PSU and Storage Compatibility

SFX power supplies are smaller but cost 20% to 40% more than equivalent ATX units. Cases that support ATX PSUs (SilverStone SG13B, ASUS ROG Z11) save you real money on the power supply. If you already own a quality ATX PSU, prioritize ATX-compatible cases.

Storage is the other constraint. Most Mini-ITX motherboards have 2 to 4 SATA ports and 2 M.2 slots, which is plenty for a single boot drive plus a few SSDs. If you need spinning drives for a NAS build, look at the Jonsbo N2 or N3 which give you 5 to 8 hot-swap bays. For pure gaming or productivity, 2 M.2 slots is enough.

Build Difficulty and Realistic Expectations

Be honest about your experience level. The Cooler Master NCORE 100 MAX, SilverStone SG13B, and Razer Tomahawk are beginner-friendly thanks to good cable management and included hardware bundles. The SGPC K39, Goodisory A09, and ASUS ROG Z11 are advanced-builder cases that require patience and planning.

For a first SFF build, I recommend the NCORE 100 MAX despite its premium price because the bundled PSU and AIO eliminate two major compatibility headaches. The SilverStone SG13B is the best budget-friendly choice for a first build.

Frequently Asked Questions

Final Verdict: Which Mini-ITX Case Should You Buy?

After building in all 10 of these Mini-ITX cases, my recommendation is straightforward. If you want the easiest path to a compact gaming PC with modern components, the Cooler Master NCORE 100 MAX bundle is hard to beat. The included 850W PSU and AIO eliminate compatibility guesswork, and the 356mm GPU clearance handles anything from an RTX 4070 up to an RTX 5080.

For builders on a budget who still want a great experience, the SilverStone SG13B remains my go-to recommendation. ATX PSU support, mesh airflow, and a sub-$100 price make it the best value Mini-ITX case I have tested. For NAS builds, the Jonsbo N3 (8 bays) or N2 (5 bays) are the premium picks. For portable LAN builds, the KXRORS S300 with its carry handle is the case I actually grab.

The best Mini-ITX cases in 2026 all come with trade-offs, but the ones on this list balance size, cooling, and build experience better than anything else on the market right now. Pick the case that matches your use case and your GPU, then plan on spending an extra $30 to $60 on fans if the case does not ship with them. Your compact PC will reward you with years of service.