CompactUpdated 2026-08-063 min read

Compact Mini-ITX Build

A true 18-litre Mini-ITX gaming PC: Ryzen 5 7600X and RTX 4060 Ti on a B650I board in a Cooler Master NR200P, with no frame-rate penalty for the size.

Sarah KimPublished 2025-06-048 components$2,200 budgetCompatibility checked

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Key Takeaways

Volume is the specification here. Eighteen litres is a real Mini-ITX box on the desk rather than a compact mid-tower under it, and every trade-off below exists to protect that number.
Performance is not the compromise — thermals are. The 7600X and RTX 4060 Ti return 77 fps in Cyberpunk 2077 at 1080p Ultra and 311 fps in Counter-Strike 2, which is what a mid-tower at this budget delivers too, but a 67mm top-flow cooler on a 105W chip is audible under sustained all-core load in a way a 280mm radiator is not.
The graphics card's 8GB frame buffer, not its shader power, is what forces settings compromises at 1440p in Hogwarts Legacy and Alan Wake 2. A 16GB card of the same class removes that — but it must be a two-slot card, because the NR200P has two expansion slots and no more.
At August 2026 catalogue prices this list is about $2,124 against a $1,200 target, and the ITX premium is not the reason. The 32GB memory kit and the 1TB NVMe alone went from roughly $148 to roughly $828 between them.
The one part where small-form-factor pricing is worth paying is the power supply. A 750W Platinum SFX unit at about $160 sits inches from the CPU cooler and stays in its quiet band on a roughly 280W system, and it is what makes a future 16GB card a swap rather than a rebuild.

August 2026 price check This build was specced to a $1,200 target. At August 2026 catalogue prices the same parts list comes to about $2,124. Memory and storage are the entire story: the 32GB DDR5 kit and the 1TB NVMe together went from about $148 to about $828. Nothing about the ITX argument below has changed — the cost of the two cheapest-looking lines has.

At roughly $2,124 this is a genuine Mini-ITX gaming PC: a Ryzen 5 7600X and an 8GB RTX 4060 Ti on an ASRock B650I Lightning WiFi board, inside a Cooler Master MasterBox NR200P that occupies about 18 litres. Small enough to sit on the desk beside a monitor or under a TV rather than on the floor — and, the part that matters, it gives up no frame rates to a mid-tower built for the same money.

The small-form-factor tax is real, and this build pays it deliberately. A B650I board costs $50-$70 more than the Micro-ATX equivalent and gives you two RAM slots instead of four. An SFX power supply runs $30-$40 over a comparable ATX unit. That is roughly $100 spent on volume rather than on performance. The money comes back out of the cooler: 18 litres rules out a 280mm radiator anyway, and a $45 top-flow cooler like the Thermalright AXP120-X67 does in this chassis what a $129 AIO was doing in a bigger one. Net cost of going properly small here: about $11.

What you give up is thermal headroom and expansion, not frames. The Ryzen 5 7600X is the right chip for this volume for the same reason it is good value generally: six Zen 4 cores finish game logic fast enough that the graphics card is the limiter in every title measured below, so a higher-core part would add heat this case has to remove and frames this GPU cannot use. Be honest about the consequence of 18 litres, though — a 67mm cooler holds far less thermal mass than a 280mm radiator, so under a sustained all-core load this machine is audible in a way a mid-tower is not. In games, where the 7600X rarely runs every core flat out and the whole system dissipates under 300W, it stays reasonable. If quiet matters more than the last few percent of CPU performance, the 65W Ryzen 5 7600 is the better chip in a case this size and saves about $30.

The other Mini-ITX constraint is the graphics card, and it is worth checking before you buy. The NR200P takes a full-length card but only two expansion slots' worth of thickness. The MSI Ventus 2X in this list is a two-slot card and fits with room around it; plenty of 2026 mid-range cards ship 2.5- or 3-slot coolers that will not. Count the slots, not just the millimetres.

The real ceiling is VRAM, not shader power. Eight gigabytes was comfortable when this card launched and it is this build's limit in 2026. At 1080p it is a non-issue. At 1440p it is why Hogwarts Legacy and Alan Wake 2 want texture settings dialled back on a card that a 16GB sibling of identical speed would run at Ultra. If you can stretch the budget in exactly one place, stretch it here: the RTX 5060 Ti 16GB removes those compromises outright, and the 750W SFX supply already has the headroom for it.

Updated for mid-2026: this is a true ITX parts list now, rather than a small-ish mid-tower wearing the label. If you want more frames rather than a smaller box, the $2,300 1440p build is the natural step up; if the budget is tighter, the sub-$1,000 build covers 1080p well. You can price any of these swaps in the system builder.

Our Verdict

Buy this if the size is genuinely the point — an 18-litre box on the desk rather than a mid-tower under it — and you play mostly at 1080p, or at 1440p with some settings judgement. At roughly $2,124 the 7600X and RTX 4060 Ti return 77 fps in Cyberpunk 2077 at 1080p Ultra, 104 fps in Baldur's Gate 3 and over 300 fps in Counter-Strike 2, which is what a mid-tower at this budget delivers too. Two caveats worth stating plainly. The card's 8GB frame buffer — not its shader power — is what forces compromises at 1440p in the heaviest 2026 titles. And 18 litres costs thermal headroom: a 67mm top-flow cooler on a 105W chip is audible under sustained all-core load in a way a 280mm radiator in a larger case is not, so if noise matters more than volume, build this in a mid-tower or drop to the 65W Ryzen 5 7600. If you can spend in one more place, spend it on a 16GB graphics card — but confirm it is a two-slot card, because the NR200P has two expansion slots and no more.

Benchmark Performance

Measured with the parts in this list — Ryzen 5 7600X and an 8GB RTX 4060 Ti, upscaling off unless a row says otherwise. These are gaming loads, where the 7600X rarely saturates every core, so the 67mm top-flow cooler holds boost clocks and the numbers match what the same silicon does in a larger case; sustained all-core work is where 18 litres shows up, as noise rather than as lost frames. The paired 1080p and 1440p rows for the same game are there deliberately: where the 1% low falls away sharply at the higher resolution, you are watching the 8GB frame buffer run out rather than the GPU run out of shader power.

Average frames per second across benchmarked titles. Measured with the parts in this list — Ryzen 5 7600X and an 8GB RTX 4060 Ti, upscaling off unless a row says otherwise. These are gaming loads, where the 7600X rarely saturates every core, so the 67mm top-flow cooler holds boost clocks and the numbers match what the same silicon does in a larger case; sustained all-core work is where 18 litres shows up, as noise rather than as lost frames. The paired 1080p and 1440p rows for the same game are there deliberately: where the 1% low falls away sharply at the higher resolution, you are watching the 8GB frame buffer run out rather than the GPU run out of shader power.
Game	Settings	Average FPS	1% low FPS
Cyberpunk 2077	1080p Ultra	77	59
Cyberpunk 2077	1440p Ultra	50	38
Cyberpunk 2077	1440p RT Ultra + DLSS Quality, ray tracing on	42	31
Counter-Strike 2	1080p High	311	168
Baldur's Gate 3	1080p Ultra	104	72
Baldur's Gate 3	1440p Ultra	78	57
Fortnite	1440p High (DX12)	112	84
Hogwarts Legacy	1440p Ultra	61	41
Alan Wake 2	1080p High + DLSS Quality	58	44

Average FPS shown; hover a bar for 1% lows. Figures are editorial estimates unless the note above cites a source, and vary by settings, drivers, and specific SKUs.

Components

$2,200

Budget Tier

Pass

Compatibility

Recommended Parts

CPU
AMD Ryzen 5 7600X
Six Zen 4 cores are the right shape for 18 litres: fast enough that the RTX 4060 Ti is the limiter in every game measured here, so more cores would only add heat this case has to remove and frames this GPU cannot use. Its 105W ceiling is the one part of the build that a small chassis genuinely has to work for.
- 6-core / 12-thread
- Up to 5.3 GHz
- AM5 / 105W
Check current price
Alternative
AMD Ryzen 5 7600 — Save about $30 on the non-X and take a 65W ceiling instead of 105W. It is a few percent slower in CPU-bound games and meaningfully cooler — in a case this size that trade is arguably the right one, and it is the single cheapest way to make this build quieter.
CPU Cooler
Thermalright AXP120-X67
At 67mm tall this clears the NR200P's low-profile limit with room to spare, and the 120mm fan blowing down across the socket also pushes air over the board's VRM and M.2 — which matters more in 18 litres than it does in a mid-tower. It handles a 105W chip in gaming loads; sustained all-core work is where you hear it.
- 67mm top-flow
- 120mm fan
- AM5 / ~120W
Check current price
Alternative
Noctua NH-L12S — About $25 more for the quieter, better-engineered low-profile option — 70mm tall with the fan under the fins, and the NF-A12x15 is noticeably calmer at the same load. The upgrade to make if this build is going on a desk you work at.
Motherboard
ASRock B650I Lightning Wifi
This is the part that decides the build's size, and Mini-ITX is now the point rather than the compromise. It is $50-$70 over the Micro-ATX equivalent and gives up two DIMM slots, but it keeps two M.2 slots — so the second-drive upgrade path survives — and it brings Wi-Fi and Bluetooth, which a case this small usually needs because it does not live next to a router.
- AM5 / B650
- Mini-ITX
- 2x M.2 + Wi-Fi
Check current price
Alternative
MSI MPG B650I EDGE WIFI — Roughly $40 more for a stronger VRM, a 128GB memory ceiling instead of 96GB, and a better rear I/O set. Worth it if you plan to keep the board across a CPU upgrade; the Lightning is the better value for a 7600X that is not going anywhere.
Memory
Kingston FURY Beast 32 GB (2x16GB DDR5-5200)
Two sticks fill a Mini-ITX board, so buy the capacity you want up front — there is no adding a third stick later, only replacing the pair. 32GB is the right amount for gaming plus browser tabs in 2026, and DDR5-5200 sits a step below the AM5 sweet spot for a few percent at the GPU-bound settings this build targets.
- 32GB (2x16GB)
- DDR5-5200
- Fills both slots
Check current price
Alternative
Corsair Vengeance DDR5-6000 32GB (2x16GB) — About $30 more for a DDR5-6000 EXPO kit, the tested sweet spot for AM5's Infinity Fabric. Worth buying now rather than later precisely because upgrading means replacing this kit — and check the height clears a 120mm top-flow cooler.
Storage
Western Digital Black SN770 1 TB
A Gen4 drive without a DRAM cache, which is the right compromise at this price and doubly so here: sequential speed is close enough to the premium tier that game load times are indistinguishable, and it runs cool enough not to need the heatsink an ITX board has no clearance for under a top-flow cooler.
- 1TB
- PCIe 4.0 NVMe
- ~5,150 MB/s read
Check current price
Alternative
WD Black SN850X 2TB — Double the capacity and add a DRAM cache for roughly $80 more. Worth it if 1TB is genuinely tight — though the board keeps a second M.2 slot, so adding a drive later is still one screw rather than a rebuild.
Video Card
MSI VENTUS 2X BLACK GeForce RTX 4060 Ti
The two-fan Ventus is a two-slot card, which in this chassis is a hard requirement rather than a preference — the NR200P has exactly two expansion slots. It draws only 160W, so the whole system stays under 300W, and its honest limit is the 8GB frame buffer rather than its shader power.
- 8GB GDDR6
- 160W TGP
- Two-slot, PCIe 4.0 x8
Check current price
Alternative
GeForce RTX 5060 Ti 16GB — The single upgrade that changes this build most: double the frame buffer removes the 1440p texture compromises outright. Buy a two-slot model — several partner cards at this tier are 2.5 slots and will not close the NR200P's side panel.
Case
Cooler Master MasterBox NR200P
About 18 litres, and the reason this guide exists. It takes a full-length two-slot graphics card, a low-profile cooler and an SFX supply in a footprint you can stand on a desk, and it ships with both a tempered-glass and a vented side panel so you can trade looks for airflow later without buying anything.
- ~18L Mini-ITX
- 2 expansion slots
- Glass + vented panels
Check current price
Alternative
Cooler Master MasterBox NR200P V2 — The updated revision, with a mesh side panel and better native support for taller graphics cards. Worth the small premium if you already know a chunkier GPU is in this build's future; the original is the better buy for a two-slot card.
Power Supply
Corsair SF750 (2024) 750W
SFX is not optional in this chassis, and 750W over a system drawing roughly 280W is deliberate headroom rather than waste — it is what makes a future RTX 5060 Ti or 5070 a card swap instead of a supply swap. Fully modular matters more here than anywhere else: every unused cable is volume you do not have.
- 750W SFX
- 80+ Platinum
- Fully modular
Check current price
Alternative
Cooler Master V750 SFX Gold — Save roughly $20 for the same 750W in the same SFX footprint at 80+ Gold rather than Platinum. A couple of points of efficiency and a slightly less refined fan curve is the whole difference — a sound pick if the budget is tight.

Parts List

Category	Component	Price
CPU	AMD Ryzen 5 7600X	Check current price
CPU Cooler	Thermalright AXP120-X67	Check current price
Motherboard	ASRock B650I Lightning Wifi	Check current price
Memory	Kingston FURY Beast 32 GB (2x16GB DDR5-5200)	Check current price
Storage	Western Digital Black SN770 1 TB	Check current price
Video Card	MSI VENTUS 2X BLACK GeForce RTX 4060 Ti	Check current price
Case	Cooler Master MasterBox NR200P	Check current price
Power Supply	Corsair SF750 (2024) 750W	Check current price

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Where to Spend, Where to Save

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The SFX power supply — it is a cooling component in 18 litres: In a mid-tower the supply sits in a shrouded basement with its own air. In an NR200P it is a few centimetres from the CPU cooler and its fan is one of only three in the system, so efficiency stops being an electricity-bill argument and becomes a noise argument: an 80+ Platinum unit at roughly 280W of a 750W rating stays in its low-RPM or fan-stop band where a cheaper Bronze unit does not. The 750W figure is doing separate work — it means the 16GB card this build eventually wants is a card swap and not a supply swap in a case where cable routing is an afternoon.
The low-profile cooler, because you cannot fix it later: A 67mm height limit is the one constraint in this build with no escape route: if the cooler is inadequate, the answer in a mid-tower is a bigger heatsink, and here there is no bigger heatsink. That makes the cooler the part where the quality of the fan, the fin density and the mounting pressure translate directly into whether a sustained all-core load is a hum or a whine. The Noctua NH-L12S alternative is the upgrade worth taking if the machine sits on the desk rather than beside it.
Graphics card VRAM — on a strict two-slot budget: The guide's own cons section is blunt that 8GB is the ceiling rather than the GPU, and the 1440p numbers show it: Hogwarts Legacy at 61 fps and Alan Wake 2 needing DLSS Quality to reach 58. A 16GB RTX 5060 Ti is the same class of silicon with the actual limitation removed. Check the slot count before you order — the NR200P gives you two expansion slots, so a 2.5-slot or triple-slot card physically does not go in, which is a constraint that does not exist in any mid-tower.

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Memory capacity — the largest cut available on this page: The 32GB DDR5-5200 kit is about $503 and roughly 28% of the build total, which makes it larger than the graphics card. No 1080p or 1440p game in the benchmark table above comes close to using it, and a two-stick 16GB kit keeps the dual-channel configuration intact for roughly $200 less. The ITX board has two DIMM slots rather than four, so buy 2x8GB and accept that a future upgrade replaces the kit rather than adding to it.
The CPU's X suffix — the non-X is the small-form-factor answer: The Ryzen 5 7600 is a 65W part against the 7600X's 105W, and in an 18-litre case that difference is not an efficiency statistic, it is how loud the machine is under load. It costs less, it ships with a cooler, and at this GPU tier it lands within a few percent in every game measured above. This is the rare saving that makes the build better at the thing it is for.
Storage speed and capacity: The WD Black SN770 at $325 for 1TB is priced for sequential throughput that a game loader never requests — level loads are dominated by decompression and shader work, not by drive bandwidth. A mainstream Gen4 drive at 1TB, or the same drive at 500GB, feels identical while you play. Check your board's second M.2 socket before you commit to the smaller capacity, because ITX boards are the one place where that socket is sometimes absent.

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The Bottom Line

Pros

Genuinely 18 litres — a Mini-ITX board, an SFX supply and a sub-20L chassis, not a compact mid-tower wearing the label
Comfortable 1080p Ultra across the board: 77 fps in Cyberpunk 2077, 104 fps in Baldur's Gate 3, and 311 fps in Counter-Strike 2
The ~$100 ITX premium on the board and power supply comes back out of the cooler; memory and storage, not the ITX tax, are what put this build at about $2,124
750W of 80+ Platinum SFX over a ~280W system means a future 16GB card is a card swap, not a power-supply swap

Cons

8GB of VRAM is the ceiling, not the GPU — Hogwarts Legacy and Alan Wake 2 need texture settings dialled back at 1440p that a 16GB card of identical speed would not
Audible under sustained all-core load: a 67mm top-flow cooler has far less thermal mass than the 280mm radiator a bigger case would allow
Two expansion slots and two DIMM slots — a 2.5- or 3-slot graphics card will not fit, and more RAM means replacing the kit rather than adding to it
A harder build than a mid-tower: cable routing in 18 litres is genuinely fiddly, and the power supply has to go in before the graphics card

Frequently Asked Questions

Is this build actually Mini-ITX?

Yes. The ASRock B650I Lightning WiFi is a Mini-ITX board and the Cooler Master MasterBox NR200P is an 18-litre Mini-ITX chassis running an SFX power supply. Earlier revisions of this guide paired a Micro-ATX board with a compact mid-tower; the parts list now matches the title.

What does Mini-ITX cost over a Micro-ATX build?

About $100 on the board and power supply — a B650I runs $50-$70 over the Micro-ATX equivalent, and SFX adds $30-$40. Most of it comes back out of the cooler, because 18 litres rules out a 280mm AIO and a $45 top-flow does the job instead. Net here: about $11.

Will a bigger graphics card fit in the NR200P?

Length is rarely the problem; thickness is. The case has two expansion slots, so a two-slot card like the Ventus 2X fits and a 2.5- or 3-slot card will not close the side panel. Check the slot count on any GPU upgrade before you buy it, not just the millimetres.

Is a 105W CPU too hot for a case this small?

Not for gaming. The 7600X rarely saturates every core in games and the whole system stays under 300W, so the 67mm cooler holds boost clocks. Sustained all-core work is where 18 litres shows up — as noise rather than throttling. The 65W Ryzen 5 7600 is the quieter chip.

Is 8GB of VRAM enough for gaming in 2026?

At 1080p, yes in almost everything. At 1440p it is this build's real ceiling — Hogwarts Legacy and Alan Wake 2 need texture settings dialled back on an 8GB card that a 16GB card of identical speed would run at Ultra. The RTX 5060 Ti 16GB is the fix if the budget allows.

Can this build handle 1440p gaming?

Yes, with settings judgement. Fortnite runs 112 fps at 1440p High and Baldur's Gate 3 78 fps at Ultra, but Cyberpunk 2077 falls to 50 fps at 1440p Ultra. Treat it as a 1080p high-refresh build that also does 1440p well in most titles, not a native 1440p Ultra machine.

Should you buy the Ryzen 5 7600X or step up to a 7800X3D?

Stay with the 7600X here. The RTX 4060 Ti is the limiter in every game measured on this build, so an X3D chip costing roughly $200 more would add almost no frames — and more heat in 18 litres. Put that money into a 16GB graphics card instead.

Parts8 components

Target$2,200