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Fractal Define One case review: Balancing noise and thermals
Fractal hits the nail on the head with the Define One, balancing quiet, cool, and premium looks. Smart details make it an easy recommendation at $154.99.
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The Fractal Define series has been around since 2009, starting with the aptly named Fractal Define chassis. Since then, we’ve seen the Define R2/R3/R4/R5/R6/R7/7 XL cases over the years, all keeping the familiar closed-front design. Today, Fractal released the Define One, which they say is a “...modern expression of quiet performance and Scandinavian aesthetics”. This ‘expression’ includes aluminum side intake vents, premium details, and subtle curves that aim for a clean, understated look balancing airflow and thermal efficiency.
The new Define One achieves Fractal’s goals, offering users a clean, premium-looking chassis that achieves sound mitigation with its closed-front design. The previous Define 7 and 7 XL (and others before it) are all cuboids with sharp edges, whereas the Define One rounds the corners off for a softer, yet still premium appearance. This is one of the best-looking Define chassis to date.Inside, there’s room for large graphics cards, multiple radiators (up to 360mm), and it even supports rear-connect motherboards. Fractal includes three pre-installed Momentum 14 fans in the front and has a unique integrated front air guide that feeds air directly from the bottom fan towards the video card. The interior is well thought out, with toolless access, removable brackets, and built-in cable management that makes building easier and leaves you with a clean, functional PC. Priced at $154.99, it gives off premium vibes you don’t normally find at this price point, or in previous Define iterations.
We'll cover many more details inside and outside the chassis, showcasing the features and any issues we may encounter during the build process. We also run the case through thermal and noise testing to show how it performs compared to others and whether it has a chance of making our best PC cases list. Below are the case's specifications from Fractal.
Dark Solid Dark TG Light TintLight SolidLight TG Clear Tint
(2) 3.5-inch -or- (4) 2.5-inch(Supports up to six 2.5-inch total)
Top - 2x120/140mmFront - 3x120/140mmBottom - N/ARear - 1x120mm
368mm (w/ front fans installed)338mm (w/ 30 thick front rad. installed)
3x included fans, integrated GPU front air guide, noise/vibration dampening