Best Mini ITX and SFF Cases 2026: 25 Compared by Size

A mini ITX case is a compact PC enclosure designed for Mini-ITX motherboards (170x170mm), typically ranging from 4 to 20 liters in total volume.

Last updated: May 2026

You’ve decided you don’t need a full tower taking up half your desk. Smart. You want a capable gaming rig or workstation that fits neatly on a shelf, travels to LAN parties, or just doesn’t dominate your living room. Mini ITX is the answer, but picking the wrong case will have you fighting clearance issues, thermal throttling, and regret.

The best mini ITX cases in 2026 include the Fractal Design Terra, Cooler Master NR200P Max, Hyte Revolt 3, Dan Cases A4-SFX v4.1, and NZXT H1 v2. Each one suits a different use case, budget, and GPU size. This guide breaks down exactly which one fits your build, what specs actually matter, and where builders consistently go wrong with SFF cases.

What Makes a Mini ITX Case Different From ATX and Micro ATX

Mini-ITX motherboards measure exactly 170x170mm, confirmed in the official Mini-ITX form factor specification. That’s substantially smaller than Micro ATX (244x244mm) and full ATX (305x244mm). The case volume follows the board size, which is where things get interesting and complicated.

A mini ITX case gives you one PCIe slot, typically two RAM slots, and limited storage bays. That’s the trade. What you gain is a system you can actually carry under one arm, a smaller thermal footprint on your desk, and in many builds, comparable gaming performance to a full tower rig using the same GPU.

The Numbers Behind the Form Factors

A Mini-ITX board is 170 × 170 mm. That size was not set by Intel: Intel’s own Mini-ITX addendum describes it as “the Mini-ITX form factor standard, developed by Via Technologies Inc” (Intel, Mini-ITX Addendum). Micro-ATX is 244 × 244 mm at most, and the word matters: the specification sets a maximum and allows narrower boards, which is why plenty of retail micro-ATX boards are shallower than they are wide (Intel, microATX specification).

The power supply is the other standard worth knowing. A standard SFX unit is 125 × 63.5 × 100 mm per Intel’s SFX12V design guide (Intel). SFX-L is the same face with a deeper body, usually 130 mm, to fit a 120 mm fan. It is worth knowing that SFX-L is not an Intel format at all: the term does not appear in the SFX12V guide, and it originated with SilverStone. Cases list the two separately for a reason, so check which one a case clears before buying the quieter, longer unit.

And “SFF” itself has no official definition. The commonly used line is 20 litres, but that is a convention among builders and reviewers rather than a standard, so a case marketed as small form factor can sit well above it. Three in the table do.

Mini ITX vs Micro ATX: Which Form Factor Should You Choose?

Feature	Mini ITX	Micro ATX	ATX
Motherboard Size	170x170mm	244x244mm	305x244mm
PCIe Slots	1	2-4	4-7
RAM Slots	2	4	4
Typical Case Volume	4L-20L	15L-30L	30L-60L+
Expansion Options	Minimal	Moderate	High
Portability	Excellent	Good	Poor
Cooling Headroom	Tight	Moderate	Ample
Price Premium	Yes (boards cost more)	Minimal	None

If you need four RAM sticks for ECC memory, multiple capture cards, or sound cards, Micro ATX makes more sense. But if you’re building a gaming PC or a clean workstation and don’t need expansion beyond one GPU, Mini ITX gives you everything you actually need in a much smaller footprint.

Key Specs to Check Before Buying Any Mini ITX Case

This is where a lot of builders get burned. You buy a case, then discover your GPU is 30mm too long, or your AIO radiator won’t fit, or there’s no room for the SFX PSU you ordered. Check these specs before you commit to anything.

Case Volume

Mini ITX cases range from ultra-compact 4-5 liter designs like the Dan Cases A4-SFX all the way up to 20-liter cases like the Cooler Master NR200P. Smaller volume means tighter builds, more cable routing frustration, and less thermal headroom. Under 8L and you’re in truly challenging territory for anything above a 200W GPU.

GPU Length and Width Clearance

This is the big one. A beefy GPU like the RTX 4080 Super or RX 9070 XT can be 340mm long and run three slots wide. Many ITX cases physically cap GPU length at 320mm or less. Some, like the Hyte Revolt 3, use a riser to mount the GPU vertically, which changes the clearance math entirely. Always cross-reference the case GPU length spec with your actual GPU dimensions. Not optional.

Speaking of risers, many modern ITX cases rely on a PCIe riser cable to position the GPU in a way that fits the case layout. The quality of that riser cable matters for both signal integrity and physical fit.

PSU Form Factor: SFX vs ATX

Most cases under 12L require an SFX or SFX-L power supply, not a standard ATX PSU. SFX units are 125×63.5mm. SFX-L stretches to 130mm depth to accommodate higher wattage. Expect to pay $20-50 more for a quality SFX unit compared to an ATX equivalent. The Corsair SF series and Seasonic Focus SGX are the go-to options in this category.

CPU Cooler Height

Compact cases limit CPU cooler height to anywhere from 37mm (low-profile only) to 90mm for taller ITX-friendly cases. A standard tower cooler is 150-165mm tall. It won’t fit. Check the manufacturer’s listed CPU cooler clearance, and if it’s under 55mm, look at low-profile options like the Noctua NH-L9i or Thermalright AXP120-X67.

Radiator Support

If you want to run a 240mm AIO, only certain cases support it, and often only in specific orientations. Cases like the NR200P and NZXT H1 accommodate 240mm radiators. The very smallest cases (under 7L) often don’t support AIOs at all. If you’re pushing a high-TDP processor, this matters a lot. CPU overheating in a poorly ventilated ITX build is a real problem, and if you’re seeing warning signs, recognizing the signs of CPU overheating early can save your components.

Best Mini ITX Cases in 2026: Detailed Breakdown

Fractal Design Terra: Best Overall Design-Focused Case

The Terra is the most talked-about ITX case of the last two years. Gorgeous. It comes in four colorways (Jade, Graphite, Bamboo, and Silver), uses a natural wood and anodized aluminum exterior, and measures approximately 10.4 liters. That’s a manageable size without going completely extreme.

GPU clearance sits at 322mm with up to a three-slot card. It requires an SFX or SFX-L PSU. CPU cooler height ranges from 48mm to 77mm depending on the movable spine position, which can limit cooler options at tighter configurations. For mid-tier CPUs paired with an AIO, this case shines. It’s not the best case for pure airflow, but it’s visually unmatched in the ITX segment. Pricing sits around $180-200 depending on retailer.

Cooler Master NR200P Max: Best for First-Time SFF Builders

The NR200P Max comes with a 280mm AIO, an 850W SFX-L PSU, and solid mesh ventilation already included in the box. That’s exceptional value for someone who doesn’t want to source every component separately. The full case volume is about 18.4 liters.

GPU length support reaches 336mm. CPU cooler height without AIO goes up to 155mm. The mesh panels on all sides give it genuinely good airflow. It’s the case the r/sffpc community recommends most often to builders who ask “what should I start with?” and for good reason. Worth the extra cost over buying the base NR200 separately and then adding cooling components.

Hyte Revolt 3: Best for LAN Parties

At roughly 18.4 liters, the Revolt 3 is larger than most dedicated ITX cases but offers a built-in handle and a dual-chamber layout that suits regular transport. The dual-chamber design separates the PSU and GPU from the motherboard, which improves thermal separation compared to single-chamber designs. It requires SFX or SFX-L PSU. GPU support goes up to 335mm. The top tempered glass panel looks clean. If you’re regularly transporting your PC to events or a friend’s place, this is the case to get.

Dan Cases A4-SFX v4.1: Smallest Full-Performance ITX Case

Status: out of production. DAN Cases states on its own site that the A4-SFX is end of life and links to second-hand listings only. It remains the smallest case here at 7.25 litres, so it is worth hunting used, but it is not a current purchase.

At 7.25 liters, the A4-SFX is one of the most space-efficient cases you can actually build a gaming PC in. It’s not for the faint of heart. Cable routing is miserable. The build process is fiddly. And thermals are tighter than you’d like with anything above a 200W GPU.

But when you’re done, you have a genuinely pocket-sized gaming system. GPU support reaches up to 295mm without bracket (306mm including slot bracket). It requires SFX or SFX-L PSU and a low-profile or AIO cooler depending on orientation. The A4-SFX consistently shows up on lists of the best small form factor PC cases because nothing else matches its volume-to-performance ratio. Airflow design is what separates good SFF cases from bad ones, particularly whether the GPU receives adequate air circulation under sustained load. The A4-SFX passes this test in vertical GPU orientation, but only if you’re deliberate with fan configuration.

NZXT H1 v2: Best All-in-One Compact Package

Status: out of production. The H1 V2 is no longer in NZXT’s case line-up. If you want the same idea new, the closest current equivalent is the Cooler Master NR200P MAX V2, which also ships with its power supply and liquid cooler fitted.

The H1 v2 is NZXT’s attempt to make ITX building as simple as Micro ATX. It comes with a 140mm AIO cooler, a 750W SFX PSU, and a PCIe 4.0 riser cable pre-installed. Volume is about 15.5 liters.

GPU support is 325mm at up to a three-slot width. It’s narrower than some options, which can cause issues with some triple-slot GPUs. But for a 2-slot card setup, the H1 v2 is one of the cleanest builds you’ll assemble in this size class. Pricing is higher (around $349 with bundled components), but factor in that you’re not buying a PSU or AIO separately.

Lian Li A4-H2O: Best for AIO-Focused Compact Builds

The A4-H2O from Lian Li is a direct competitor to the Dan Cases A4-SFX but adds dedicated 240mm radiator support at around 11 liters. The design accommodates the radiator in the front panel area, allowing you to cool a high-TDP CPU without sacrificing a massive amount of GPU support.

GPU clearance is 322mm. It uses SFX or SFX-L PSU. Build difficulty is moderate, not as painful as the Dan Cases A4-SFX but not as forgiving as the NR200P. If you want a tight build with an actual AIO rather than a low-profile cooler, this is your most space-efficient option.

Silverstone SG13: Best Budget Mini ITX Case

At around $45-55, the Silverstone SG13 is the cheapest way into a real mini ITX build. It’s not glamorous. Plastic construction, mesh front panel, and a modest 11.5-liter volume. But it supports standard ATX PSUs (saving you the SFX price premium), up to 270mm GPU length, and CPU coolers up to 82mm tall.

Not great for a beefy GPU. But if you’re building a budget gaming system or a compact Plex server, it gets the job done without the premium pricing of cases like the Terra or H1 v2.

Mini ITX and SFF Case Comparison: 25 Cases by Volume

Every number below comes from the manufacturer’s own specification page, and the cases are ordered smallest first. The four limits that decide whether a build fits are in the table: internal volume, the longest graphics card, the tallest CPU cooler and which power supply format the case takes. Cases that are no longer in production are marked, because several of the models that still top other guides cannot be bought new.

Case	Volume	Max GPU	Max cooler	PSU	Price	Source
DAN Cases A4-SFX v4.1 discontinued 112 × 200 × 317 mm	7.25 L	306 mm	48 mm	SFX / SFX-L	—	specs
Jonsbo T8 discontinued 160 × 242 × 218 mm	8.44 L*	210 mm	66 mm	ATX / SFX	—	specs
FormD T1 V2.5 135 × 335 × 220 mm	9.95 L	325 mm	48 mm	SFX / SFX-L	$215	specs
Fractal Design Terra 153 × 218 × 343 mm	10.4 L	322 mm	48 mm	SFX / SFX-L	$200	specs
Lian Li A4-H2O 140 × 244 × 326 mm	11 L	322 mm	55 mm	SFX / SFX-L	$155	specs
Jonsbo N2 222.5 × 224 × 222.5 mm	11.09 L*	197 mm	65 mm	SFX	$138	specs
SilverStone SUGO SG13 222 × 181 × 285 mm	11.5 L	270 mm	61 mm	Optional standard PS2	—	specs
Fractal Design Ridge (PCIe 4.0) 110 × 395.4 × 374 mm	12.6 L	335 mm	70 mm	SFX / SFX-L	$145	specs
SilverStone SUGO 16 (SG16) 200 × 232 × 280 mm	13 L	275 mm	172 mm	Standard PS2	$96	specs
Phanteks Evolv Shift XT 173 × 211 × 371 mm	13.54 L*	324 mm	72 mm	SFX or SFX-L	—	specs
Lian Li Q58 170 × 250 × 342 mm	14.5 L	320 mm	67 mm	SFX / SFX-L / ATX	—	specs
SSUPD Meshroom S V2 167 × 365 × 247 mm	15.04 L	332 mm	74 mm	ATX / SFX-L / SFX	$160	specs
SSUPD Meshroom D 167 × 254 × 363 mm	15.4 L	325 mm	142 mm	ATX / SFX-L / SFX	$100	specs
NZXT H1 V2 (2022) discontinued 196 × 405 × 196 mm	15.6 L	324 mm	—	PSU included and not user-chosen: NZXT PS-7G1B	—	specs
Jonsbo N3 233 × 298 × 262 mm	18.19 L*	250 mm	130 mm	SFX	$158	specs
Cooler Master MasterBox NR200P (original) 185 × 292 × 376 mm	18.25 L	330 mm	155 mm	SFX / SFX-L	—	specs
Cooler Master MasterBox NR200P V2 185 × 292 × 372 mm	18.25 L	357 mm	67 mm	SFX / SFX-L	$135	specs
Cooler Master NR200P MAX V2 185 × 292 × 377 mm	18.25 L	357.6 mm	67 mm	Comes with the PSU fitted: ‘V SFX Gold 850W ATX 3	$450	specs
HYTE Revolt 3 178 × 409 × 253 mm	18.4 L	335 mm	140 mm	SFX / SFX-L	$130	specs
Cooler Master MasterBox NR200P V3 185 × 292 × 378.2 mm	18.62 L	361.5 mm	70 mm	SFX / SFX-L	$164	specs
Fractal Design Mood 212 × 453 × 212 mm	19.46 L	325 mm	114 mm	SFX / SFX-L	$165	specs
Jonsbo N4 286 × 228 × 300 mm	19.56 L*	230 mm	70 mm	SFX	$128	specs
Phanteks Evolv Shift 2 / Evolv Shift 2 Air discontinued 170 × 490 × 274 mm	22.82 L*	335 mm	85 mm	SFX / SFX-L	—	specs
Corsair 2000D Airflow 200 × 458 × 271 mm	24.82 L*	365 mm	165 mm	SFX	$120	specs
SilverStone SUGO 17 (SG17) 202 × 286 × 451 mm	26.1 L	400 mm	158 mm	Standard PS2	$260	specs

Volume is the manufacturer’s figure where they publish one; an asterisk means it was calculated from the published outside dimensions, which gives a slightly larger number because it includes feet and protrusions. Prices are US list or first-party retail, checked on 18 September 2026, and 17 of the 25 cases had a price we could verify; the rest are left blank rather than guessed. A blank cooler height means the case takes a liquid cooler only.

Quick Picks From the Table

• Smallest cases still in production: FormD T1 V2.5 (9.95 L), Fractal Design Terra (10.4 L), Lian Li A4-H2O (11 L).
• If you are fitting a long graphics card: SilverStone SUGO 17 (SG17) (400 mm), Corsair 2000D Airflow (365 mm), Cooler Master MasterBox NR200P V3 (361.5 mm).
• If you want a tall air cooler rather than a liquid cooler: SilverStone SUGO 16 (SG16) (172 mm), Corsair 2000D Airflow (165 mm), SilverStone SUGO 17 (SG17) (158 mm).
• Cheapest verified prices: SilverStone SUGO 16 (SG16) ($96), SSUPD Meshroom D ($100), Corsair 2000D Airflow ($120).
• For a NAS or a drive-heavy build: the Jonsbo N-series, which trades graphics card clearance for hot-swap bays: the N3 takes a 250 mm card, the N4 a 230 mm card.

Cases Other Guides Still Recommend That You Cannot Buy New

Four of the models that appear in most Mini-ITX lists are out of production, on the manufacturers’ own evidence: the DAN Cases A4-SFX v4.1, which DAN states is end of life; the NZXT H1 V2, which is no longer in NZXT’s case line-up; the Jonsbo T8, which is on Jonsbo’s own end-of-life list; and the Phanteks Evolv Shift 2, which has moved to the legacy catalogue. They are still worth buying second hand, and they stay in this guide for that reason, but do not plan a new build around finding one at retail.

Thermal Performance in Mini ITX Cases: What You Need to Know

This section doesn’t get enough attention in most buying guides. A mini ITX case that looks great in renders can be a thermal nightmare under real load. A case with good overall panel ventilation but poor GPU-directed airflow will still run hotter than a less-ventilated case with smarter internal duct design.

Practically, this means you should prioritize:

• Mesh panels directly adjacent to the GPU intake side
• Positive pressure setups (more air in than out) to avoid hot spot buildup
• Avoiding cases where the GPU exhausts directly into a solid panel with no exit path
• Checking if your case has a separate chamber for the PSU, which keeps PSU heat away from GPU and CPU

If you’re pushing a high-TDP GPU in a sub-10L case, watch your GPU temperatures closely. Normal gaming GPU temps should stay under 85°C for most cards. If you’re seeing sustained temperatures above that, check your safe GPU temperature ranges to understand if your cooler configuration needs adjustment.

In compact builds, water cooling can help significantly. If you’re considering going that route, a beginner’s guide to PC water cooling will walk you through what’s actually involved before you commit to that approach in a tight chassis.

Common Mistakes When Building in a Mini ITX Case

Buying the GPU Before Checking Case Clearance

Done by more builders than anyone admits. An RTX 4080 Founders Edition is 304mm long, and the Dan Cases A4-SFX v4.1 supports 295mm without bracket or 306mm with bracket, leaving virtually no margin for the FE and none for most AIB cards. Always check GPU dimensions against case specifications before purchasing either component. GPU manufacturers publish exact dimensions on their product pages. Use those numbers, not the rounded estimates in review articles.

Ignoring the PSU Upgrade Cost

If you already own a quality ATX PSU and switch to a case requiring SFX, you’re buying a new PSU. A quality SFX-L 850W unit (Corsair SF850, Seasonic SGX) runs $150-200. That’s a real addition to your build cost. Cases like the Silverstone SG13 that accept ATX PSUs are worth considering if you want to reuse existing hardware.

Underestimating Cable Management Difficulty

Building in a 7-10L case is harder than building in a full tower. Not a little harder. A lot harder. Cable management in tiny cases requires shorter custom cables or careful modular cable selection. Cheap ribbon-style cables from cases like the Silverstone SG13 work fine. But sleeved cables in a Dan Cases A4-SFX will make the build genuinely difficult. Order shorter cables from vendors like CableMod if you care about the internal appearance.

Running a High-TDP CPU With Air Cooling Only

A Ryzen 9 9950X or Core i9-14900K under full load will generate 200W+ of heat. A 65mm tall air cooler doesn’t have the surface area to handle that in a closed ITX case. Either pair those CPUs with a 240mm AIO, drop to a lower TDP chip (Ryzen 7 9700X at 65W TDP is excellent for ITX), or choose a larger case with proper cooler height clearance. Check the AMD product specification pages for official TDP figures before finalizing your CPU choice.

Forgetting About Low Profile GPU Options

If you’re going extremely small, you may need to consider a low profile GPU instead of a full-height card. For HTPC builds or ultra-compact systems, low profile graphics cards are purpose-built for cases where standard GPU height won’t fit the bracket opening.

Who Should Build a Mini ITX PC in 2026

Mini ITX makes sense for you if you’re in one of these situations:

• You want a living room PC that doesn’t look like a server rack
• You attend LAN parties and need portability
• You’re working in a tight desk space and every inch matters
• You want to build a secondary rig or dedicated streaming system without taking up extra room
• You’re building a high-end single-GPU gaming system and don’t need multi-card or heavy expansion

Mini ITX doesn’t make sense if you need multiple PCIe expansion cards, four RAM sticks for a high-channel-count workload, or if you’re not comfortable with tighter build tolerances. Micro ATX will serve those needs with a slightly larger footprint but considerably more breathing room.

Frequently Asked Questions

What is the smallest mini ITX case you can actually game in?

The Dan Cases A4-SFX v4.1 at 7.25 liters is the smallest widely available case that can fit a full-performance GPU and an SFX PSU. The GPU clearance is 295mm without bracket (306mm with bracket), so card selection matters. Builds like a 4.5-liter home theater gaming PC are possible with more limited GPU choices, but for gaming with a current-gen card, the A4-SFX or Lian Li A4-H2O represent the practical floor. Below 7 liters, GPU support becomes severely restricted.

Do mini ITX cases run hotter than ATX cases?

Generally yes, because there’s less physical space for airflow and heat dissipation. However, well-designed mesh ITX cases like the NR200P with the right fan configuration can keep thermals close to a mid-tower result for most gaming workloads. The difference becomes more pronounced when you’re running a 250W+ GPU at sustained load, where larger cases have a clear thermal advantage. Choosing a case with mesh panels and running fans in positive pressure reduces the gap significantly.

Can you put an RTX 4090 or 5090 in a mini ITX case?

Technically yes, but it depends on which variant. The RTX 5090 Founders Edition is 304mm long and two slots wide, fitting most cases in this guide. Cases like the Hyte Revolt 3 (335mm clearance) accommodate it comfortably. Third-party 5090 cards from ASUS, MSI, and Gigabyte are often 340mm or longer and require careful case selection. Always verify exact GPU dimensions against case specs and accept that thermals will be tighter than in a full tower.

Is mini ITX more expensive than ATX to build?

Yes, typically by $100-300 depending on how you account for it. Mini ITX motherboards cost $20-60 more than comparable ATX boards. Many ITX cases require SFX PSUs that run $30-80 more than equivalent ATX units. The cases themselves are often priced higher than mid-towers despite using less material, partly due to engineering complexity and lower production volumes. Budget for this premium when planning your build.

What PSU wattage do I need for a mini ITX gaming PC?

For a mid-range build with a GPU in the RTX 4070 / RX 7800 XT class, 650W SFX is comfortable. For a high-end build with a 300W+ GPU, go for 850W SFX-L. Don’t undersize the PSU in a compact case, because thermal stress on an underpowered PSU in a tight enclosure shortens its lifespan and creates instability under peak load. The Seasonic Focus SGX and Corsair SF series both offer solid options at these wattage levels.

What You Should Do

Start by locking in your GPU choice and measuring its exact dimensions. Then work backward to find a case that fits it with at least 5mm of clearance. For most first-time ITX builders, the Cooler Master NR200P Max is the right call: it includes the PSU and AIO, it handles nearly every current GPU, and it doesn’t punish you during the build process. If you want something more compact and you’re comfortable with a challenging build, the Lian Li A4-H2O at 11 liters gives you proper AIO support without going as extreme as the Dan Cases A4-SFX. Pin down your GPU clearance, PSU type, and CPU cooler height before you buy anything else.