Define S

Fractal Design Define S承袭Define经典隽永的外观和静音设计,以创新方式设计新型的内部结构。Define S系列机箱设计巧妙,配备的特色功能可满足机箱发烧友的需求。这款机箱运行全程无噪音,支持强劲的空气散热和液体冷却散热系统。机箱整体构造新颖,独具斯堪的纳维亚风格。

  • 采用高密度抗噪材料,最优化电脑静音运行设计,支持最理想的空气散热和水冷散热装置
  • 创新型内部布局,让气流能完美顺畅得通过机箱,请更有利于安装空气散热装置或扩展安装水冷散热器
  • 这款机箱的尺寸支持扩展安装水冷散热装置


View specifications


Define S系列机箱的内部布局新颖现代,避免了光驱槽束缚,更着重于顺畅流动的散热系统,更完善了对水冷散热系统的高度支持。

Extensive cooling support and designed for silent computing

特殊的高密度抗噪材料,搭配独家的 ModuVent™风扇孔盖以及精巧设计的Dynamic系列风扇,Define S系列机箱在静音运行方面已达到最顶尖的水平。
  • 创新型内部布局,让气流能完美顺畅得通过机箱,请更有利于安装空气散热装置或扩展安装水冷散热器

  • 这款机箱的尺寸支持扩展安装水冷散热装置;机箱顶部最大可支持安装420mm的散热排,前部最大可支持360mm的散热排

  • 内置小型的水箱固定支架;无需钻孔就可以将储液器安装在主板托盘的前面,同时底盘上已经有预先钻好的水泵安装孔

  • 内带有2把最新的Fractal Design DynamicGP14 140mm静音风扇,大风流有效带走热能,低噪音实现最强静音表现

  • 配备有ModuVent™风扇安装槽口盖,不需工具可轻松安装风扇增加风流或是保持最佳的静音效能

Smart open layout and storage functionality

  • 机箱前方和底部附有可水洗的防尘过滤网,方便取出清洁,保持机箱内部无灰尘堆积,前侧防尘网特别设计搭配磁铁吸附机构,拆装更便利

  • 主板后方设有2个SSD专用安装位置,无需使用工具便能安装拆卸SSD

  • 创新的内部结构设计,将硬碟及缆线一并隐藏,让视觉效果更清爽辽阔

  • 采用最新设计的硬盘驱动器安装托盘,垂直放置于主板托盘前部隔板的后方;三个安装有减震垫圈的钢制托盘,结构稳固;在不阻碍气流流通或妨碍散热器安装的情况下,每一个托盘可支持安装一个 3.5" 或2.5"的驱动器


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"Excellent are all the space and mounting options for anything liquid cooling related, a huge plus needs to be tagged for that alone. Overall the chassis is feature rich with the removable dust filters, offers enough HDD/SSD trays, and thus is aimed at the audiophile crowd."
"What's most impressive, however, is that the Define S is able to keep everything running cool while keeping noise levels to an absolute minimum.[...]Eschewing optical drive bays in favour of enhanced liquid-cooling support, the Define S targets a niche audience compared to the all-encompassing Define R5 and is able to do so at a keen price point."
"Fractal Design broke the mold of what we should expect from them, and in our humble opinion, for this sort of pricing, it is super tough to pass up on this design for something else more expensive, and may not offer all of the goodies that this does, even if it can compete with the water cooling options, the Define S is just that nice of a chassis."
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  • 3.5" HDD/2.5" SSD positions
  • 2.5" dedicated SSD unit positions
    2 (fits SSDs up to 17 mm thick)
  • Expansion slots
  • Front ports
    2x USB 3.0, Audio in/out, Power button with LED (blue), HDD activity LED (blue), Reset button
  • Total fan mounts
  • Front fan
    3x 120/140 mm (included is 1 Fractal Design Dynamic GP-14 fan, 1,000 RPM speed)
  • Top fan
    3x 120/140 mm or 1x 180 mm with 165 mm hole spacing
  • Rear fan
    1x 120/140 mm (included is 1 Fractal Design Dynamic GP-14 fan, 1,000 RPM speed)
  • Bottom fan
    1x 120/140 mm
  • Side fan
    1x 120/140 mm
  • Dust filters
    Front fans, Bottom fans
  • Cable routing grommets
  • Fixed velcro straps
  • Captive thumbscrews
    Both side panels
  • Left side panel
    Industrial sound-dampened steel
  • Right side panel
    Industrial sound-dampened steel


  • Power supply type
  • Motherboard compatibility
    ATX, Micro ATX, Mini ITX
  • Front radiator
    360, 280, 240, 140 or 120 mm
  • Top radiator
    420, 360, 280, 240, 140 or 120 mm (a thickness limitation of 55 mm for both radiator + fan applies on 420, 280 and 140 mm radiators)
  • Rear radiator
    120/140 mm
  • Bottom radiator
    120 mm radiator (Use of radiators in the bottom position limits the PSU length to 165 mm)
  • PSU max length
    180/170 mm with a bottom 120/140 mm fan installed or 300 mm when not using any bottom fan
  • GPU max length
    425 mm with front fans installed, without compromising HDD capacity or 450 mm without front fans installed directly in line with the GPU
  • CPU cooler max height
    180 mm
  • Cable routing space
    20 - 40 mm


  • Case dimensions (WxHxD)
    233 x 451 x 520 mm
  • Case dimensions - with feet/screws/protrusions
    233 x 465 x 533 mm
  • Net weight
    9.1 kg
  • Package dimensions (WxHxD)
    322 x 615 x 535 mm
  • Package weight
    10.8 kg
  • Volume
    54.6 liters


  • Package contents
    Define S computer case, User manual, Accessory box
  • EAN
  • UPC
  • Product code
  • Additional information
    Available for System Integrators