This article covers Cooler Master MasterBox NR200P ホワイト Mini-ITX.

Overview

The Cooler Master MasterBox NR200P White is a compact 18-liter Mini-ITX case that defies its size by supporting full-sized hardware. Designed for the SFF enthusiast who doesn't want to compromise on performance, this case fits most high-end graphics cards up to 330mm long and CPU coolers up to 155mm tall. It even includes a PCI-E riser cable for vertical GPU mounting and comes with both a tempered glass side panel and a mesh panel. The white color option offers a clean, modern aesthetic that stands out on any desk.
Unlike many small form factor cases, the NR200P provides excellent cooling potential. It supports up to a 280mm radiator on the side bracket and a 240mm radiator on top. With space for up to seven fans (two included), this case can handle the thermal demands of a flagship CPU and GPU without breaking a sweat. The steel frame is fully disassemblable, and all exterior panels are secured with push-pins for tool‑free access—a thoughtful touch during assembly and maintenance.
Market positioning sits at the upper mid‑range of SFF cases. It offers a rare balance of compactness and hardware compatibility, often rivaling larger mATX cases in terms of what you can install. For builders who want a powerful PC in a small footprint, the NR200P is a benchmark product that has inspired numerous build guides and community mods since its release in 2020.

Compatibility Guide

  • Motherboard: Mini-ITX and Mini-DTX only. ATX or Micro-ATX will not fit.
  • Power supply: SFX or SFX-L required. Standard ATX PSUs are physically incompatible.
  • Graphics card: Max length 330mm, width 156mm, thickness 60mm (3 slots). The included PCI-E 3.0 riser cable enables vertical mounting.
  • CPU cooler: Max height 155mm. Most large air coolers (Noctua NH-D15, be quiet! Dark Rock Pro 4) fit, but check exact dimensions.
  • Liquid cooling: Side bracket accepts 240/280mm radiators; top panel accepts 240mm radiators. Typical radiator thickness ≤ 30mm is recommended.
  • Storage: 1x 3.5-inch drive bay, 1x combo 2.5/3.5-inch bay, 2x dedicated 2.5-inch bays. M.2 SSDs mount directly on the motherboard.
  • Fans: Pre-installed 120mm top fans ×2. Additional mounting for bottom 120mm ×2 and rear 92mm ×1 (all optional).

Product Info

Released in 2020, the MasterBox NR200P White carries a street price around 27,000 JPY (~$250 USD at launch). It includes a 2‑year warranty through authorized Japanese distributors. The package contains: one tempered glass side panel, one mesh side panel, a PCI-E 3.0 x16 riser cable, and two 120mm top fans. The case itself weighs 5.1kg and is constructed from steel, plastic, and tempered glass.
In the SFF market, the NR200P occupies a sweet spot: it’s compact enough to sit on a desk without dominating the space, yet spacious enough to house high‑end air coolers and 280mm radiators. This dual‑personality makes it appeal to both first‑time SFF builders and seasoned enthusiasts who want a proven platform.

Best Use Cases

  • High‑performance gaming rig in miniature form: For gamers who want an RTX 4080 or RX 7900 XTX inside a case that fits in a backpack, the NR200P is an excellent choice. The 330mm GPU clearance covers almost all current flagship cards. Just remember you’ll need an SFX PSU with enough wattage (750W+ recommended).
  • Workstation‑grade SFF build: Creators running an i9‑14900K or Ryzen 9 7950X can pair the case with a 280mm AIO to keep thermals under control. The included tempered glass panel shows off workstation‑style RGB or clean cable management. Not ideal for multi‑GPU setups—only one double‑slot card fits.
  • Compact LAN‑party PC: The white color and small footprint make it easy to transport. The handle‑free design still lifts easily. Relatively light at 5.1kg, but you’ll still want a padded bag. Not suitable for builds requiring multiple 3.5” HDDs (only one bay).
  • Casual SFF first build: The tool‑free panels and spacious interior (for its size) reduce frustration. Many online guides exist. However, beginners should note that cable routing is tight, and an SFX PSU may require adapter cables.

Things to Consider

  • The biggest limitation is the power supply: only SFX or SFX-L are supported. ATX PSUs are a no‑go, so budget for a high‑quality SFX unit if you don’t already own one.
  • Cooling options are fantastic, but the layout requires careful planning. Installing a thick radiator on the side bracket may conflict with the GPU, especially wide cards. Always measure before buying.
  • The included PCI-E riser is Gen3. Using it with a PCIe Gen4 GPU and motherboard may require manual BIOS configuration (set to Gen3) to ensure stability. Not a dealbreaker, but something to note.
  • While the case can handle very large air coolers, some towers (e.g., Noctua NH‑D15S) will fit, but the glass panel may bulge slightly. The mesh panel is recommended for such coolers.
  • Compared to newer SFF cases like the Fractal Terra, the NR200P is wider and

Product Disclosure (Amazon)

  • Manufacturer: Cooler Master
  • ASIN: B08BKPHHZ4
  • Note: This article covers a manufacturer-made product based on Amazon listing details.