Overview

The Fractal Design Define Nano S Window is a Mini-ITX tower case that prioritizes silent computing without sacrificing expandability. Part of the renowned Define series, this compact chassis accommodates full-size graphics cards and standard ATX power supplies, making it a versatile choice for enthusiasts who demand a quiet yet powerful system. The side panel features a tempered glass window, allowing you to showcase your carefully selected components. Sound-damping material and ModuVent technology work together to minimize noise from fans and pumps. Removable dust filters on the front and bottom simplify maintenance, while the clean, understated design fits seamlessly into any environment. The case includes two Dynamic Series fans (one GP-12 and one GP-14) for balanced airflow out of the box. Positioned as a mid-to-high-end option in the Mini-ITX case market, the Define Nano S Window excels in noise reduction while offering enough flexibility for custom water cooling loops. It's a favorite among builders who value a quiet workspace and a clean aesthetic.

Compatibility Guide

Motherboard support is limited to Mini-ITX only. Micro-ATX and ATX boards will not fit, so verify your motherboard form factor before purchasing. Maximum GPU length is 315mm with a front fan installed. However, cards wider than a dual-slot bracket are not recommended. Many modern high-end GPUs exceed this thickness, so check physical dimensions carefully. CPU cooler clearance is up to 160mm, accommodating most tower-style air coolers. Top-flow coolers also fit without issue. Power supply mounting is bottom-mount, compatible with standard ATX units. Cable management space is tight, so a fully modular PSU is strongly advised. * Storage capacity supports up to four drives, with flexible mounting for 2.5-inch SSDs and 3.5-inch HDDs. Installing a front radiator may limit drive bay availability, so plan your layout in advance.

Product Info

The Fractal Design Define Nano S Window launched in 2016 and has remained a popular choice for silent Mini-ITX builds. Pricing in Japan typically ranges from ¥8,000 to ¥10,000, placing it in the mid-range segment. The manufacturer offers a standard two-year warranty. Market positioning is mid-to-high-end, focusing on acoustic dampening and build quality. The windowed variant adds visual appeal, letting you display your components while still benefiting from the Define series' signature noise reduction. Cooling support includes a front 240mm radiator and a rear 120mm fan, providing adequate thermal performance for most configurations.

Best Use Cases

Silent PC builders: If you need a near-silent system for a bedroom, living room, or office, the Define Nano S Window excels. Sound-damping materials and ModuVent technology effectively suppress fan and pump noise. However, airflow is somewhat restricted, so high-TDP components may run warmer than in more open cases. High-end Mini-ITX enthusiasts: This case supports full-size GPUs and ATX PSUs, making it suitable for powerful builds. Water cooling with a 240mm radiator is possible, enabling overclocking potential. Cable management is challenging, so this case is better suited for experienced builders. * Aesthetic-focused builders: The tempered glass window showcases internal components, perfect for RGB lighting or custom water loops. If you prioritize silence above all else, consider the non-window version for slightly better noise isolation. ## Alternatives
NZXT H210i: Offers a more modern design and includes a smart device for fan/RGB control. The H210i has better cable management and looser GPU thickness restrictions, while the Define Nano S provides superior noise dampening. Prices are similar, but the H210i is easier for beginners. Cooler Master MasterBox NR200: More compact with a twin-chamber layout for excellent airflow. The NR200 is cheaper and easier to build in, while the Define Nano S wins on silence. Choose the NR200 for cooling performance and the Define Nano S for a quieter experience.

Things to Consider

The case is Mini-ITX only. Double-check your motherboard form factor before purchase. GPU thickness is limited to dual-slot brackets. High-end cards with thicker coolers may not fit. Cable management space is tight. Plan your routing carefully, especially if using a front radiator. Front intake airflow is restricted by the solid panel and dust filter. For high-heat components, consider water cooling or a more airflow-focused case. ## FAQ Q: Can I install a standard ATX power supply in this case? A: Yes, the Define Nano S Window supports standard ATX power supplies via a bottom-mount configuration. A fully modular PSU is recommended to simplify cable routing in the limited space. Q: Does it support a 240mm radiator? A: Yes, a 240mm radiator can be mounted at the front. Be aware that radiator thickness may reduce available GPU length, so check clearances before fin

Product Disclosure (Amazon)

  • Manufacturer: Fractal(フラクタル)
  • Seller: Ryohin百貨店(輸入販売/適格請求書発行可能）
  • Fulfilled by: Ryohin百貨店(輸入販売/適格請求書発行可能）
  • ASIN: B01BBZJH60
  • Note: This article covers a manufacturer-made product based on Amazon listing details.