--- product_id: 15292205 title: "Fractal Design Define S - Mid Tower Computer Case - ATX - Optimized for High Airflow/Performance and Silent Computing - 2X Fractal Design Dynamic GP-14 140mm Silent Fans - Water-Cooling Ready - Black" brand: "fractal design" price: "£45.59" currency: GBP in_stock: false reviews_count: 11 url: https://www.desertcart.co.uk/products/15292205-fractal-design-define-s-mid-tower-computer-case-atx-optimized store_origin: GB region: United Kingdom --- # Water-cooling ready High airflow design Silent operation Fractal Design Define S - Mid Tower Computer Case - ATX - Optimized for High Airflow/Performance and Silent Computing - 2X Fractal Design Dynamic GP-14 140mm Silent Fans - Water-Cooling Ready - Black **Brand:** fractal design **Price:** £45.59 **Availability:** ❌ Out of Stock ## Summary > 🚀 Elevate Your Build: Where Silence Meets Performance! ## Quick Answers - **What is this?** Fractal Design Define S - Mid Tower Computer Case - ATX - Optimized for High Airflow/Performance and Silent Computing - 2X Fractal Design Dynamic GP-14 140mm Silent Fans - Water-Cooling Ready - Black by fractal design - **How much does it cost?** £45.59 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/15292205-fractal-design-define-s-mid-tower-computer-case-atx-optimized) ## Best For - fractal design enthusiasts ## Why This Product - Trusted fractal design brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Airflow Mastery:** Innovative layout ensures optimal cooling for your high-performance components. - • **Dust-Free Haven:** Integrated dust filters keep your system clean and efficient. - • **Smart Storage Solutions:** Dedicated SSD trays for a sleek, organized build. - • **Water-Cooling Wonderland:** Supports extensive radiator setups for the ultimate cooling experience. - • **Whisper-Quiet Performance:** Experience near-silent computing without sacrificing airflow. ## Overview The Fractal Design Define S is a mid-tower computer case optimized for high airflow and silent computing. It features two Fractal Design Dynamic GP-14 140mm silent fans, extensive water-cooling support, and a smart internal layout that promotes efficient airflow. With dust filters and dedicated SSD trays, this case is designed for both performance and aesthetics. ## Description The Fractal Design define s lends the appearance, sound dampening technology, and support for a wide variety of components from the widely popular define series, while introducing a new, innovative internal layout.The define s case is packed with intelligently designed enthusiast-oriented features delivering a silent case with powerful and expansive Air and liquid cooling support, presented in a stunning Scandinavian inspired construction.the modernized internal layout of the define s omits the optical Drive bays, instead focusing on a clear straight airflow Path and uncompromising water cooling support. the define s case reaches the highest level of silent computing through strategically placed dense sound-absorbing material, multiple ModuVent fan vent covers and finely tuned dynamic series fans. ## Features - Optimally designed for silent computing, while not compromising on airflow and cooling capabilities - Innovative internal layout, providing a perfectly straight airflow path to the CPU heat sink for air cooling Set UPS or extensive radiator mounting possibilities for water cooling Set UPS - Extensive water cooling support for a case of this size; housing radiators up to 420mm in the top and 360mm in the front - Including smart reservoir brackets; featuring drill-free reservoir mounting on the front of the motherboard tray and pre-drilled pump mounting holes on the bottom panel - Equipped with ModuVent fan slot covers providing the option of additional cooling or maximum sound absorption - Including two Fractal Design dynamic GP14 140mm fans developed for superlative airflow while still maintaining low noise levels - Maintaining a dust-free interior with dust filters that cover the front and bottom air intakes - An additional 2 dedicated steel SSD trays cleanly placed behind the motherboard tray ## Images ![Fractal Design Define S - Mid Tower Computer Case - ATX - Optimized for High Airflow/Performance and Silent Computing - 2X Fractal Design Dynamic GP-14 140mm Silent Fans - Water-Cooling Ready - Black - Image 1](https://m.media-amazon.com/images/I/816RmStSYdL.jpg) ![Fractal Design Define S - Mid Tower Computer Case - ATX - Optimized for High Airflow/Performance and Silent Computing - 2X Fractal Design Dynamic GP-14 140mm Silent Fans - Water-Cooling Ready - Black - Image 2](https://m.media-amazon.com/images/I/81Xn7-kYegL.jpg) ![Fractal Design Define S - Mid Tower Computer Case - ATX - Optimized for High Airflow/Performance and Silent Computing - 2X Fractal Design Dynamic GP-14 140mm Silent Fans - Water-Cooling Ready - Black - Image 3](https://m.media-amazon.com/images/I/916bNmVOO8L.jpg) ![Fractal Design Define S - Mid Tower Computer Case - ATX - Optimized for High Airflow/Performance and Silent Computing - 2X Fractal Design Dynamic GP-14 140mm Silent Fans - Water-Cooling Ready - Black - Image 4](https://m.media-amazon.com/images/I/81GXw68dnBL.jpg) ![Fractal Design Define S - Mid Tower Computer Case - ATX - Optimized for High Airflow/Performance and Silent Computing - 2X Fractal Design Dynamic GP-14 140mm Silent Fans - Water-Cooling Ready - Black - Image 5](https://m.media-amazon.com/images/I/81txCMZoMfL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Case *by P***U on Reviewed in the United States on August 20, 2015* This Case is perfect if you are not planning to add any optical drive, who needs those these days anyway? the less moving parts the better specially for a silent PC.This has very good build quality, and it was very easy to build my machine with it because it has lot of space inside, due to not having those drive cages like most other Cases.The two Fans it comes with are adequate if you have a motherboard that is able to change the speeds when the PC is idling, at full speed they are still fine, quiet but not silent at regular usage distance, not recommended for people that get easily annoyed by any noise.The only downside i could think of is that the PSU dust filter needs to be removed from behind the case, which make it a hassle, specially if you have pets, since you need to be constantly cleaning them, and depending on where your PC is, you might have to move it before being able to remove it, and putting it back without seeing where it has to go exactly, is not easy either.One thing to consider with this case, is the space for the cables, i would recommend at least a semi modular, because i did have some troubles tucking all the excess cables on the back since i was unable to close the door and had to reorganize some cables several times, it did work, but i later still decided to change the PSU for a fanless one mainly because of the bottom dust filter issue i mention, since then, I no longer need to clean the bottom filter.System built with this case:CPU: Intel Core i5-3570k @4.1GhzPSU: Seasonic Platinum SS-460FL2 460WGPU: Asus GTX 970 StrixCooler: Cooler Master Hyper 212+ with Nexus Real Silent fanMotherboard: Gigabyte Z77 GA-Z77-DS3HMemory: Crucial Ballistix Tactical DDR3 @1.6GhzDisks: OCZ Vertex 4 256GB SSD + Samsung Spinpoint F3 500GB HDD ### ⭐⭐⭐⭐⭐ Great case, great company. *by B***N on Reviewed in the United States on December 1, 2017* Bought this case with Fractal Design as the seller. It shipped and came a few days early. I usually don't do reviews right away and this is no exception. I've had the case for a few months now and it has performed exceptionally well. It's HUGE. Incase anyone was wondering how big it is.. (I'm not going to measure it, I'm sure you can find that on the page.) Any other tower you see in a retail store, nearly double that.. In fact it didn't fit where I was going to put it. There is more than enough room to fit even the biggest cpu fans inside. I am using a Dark Rock BeQuiet! 3 for example. The 2 fans it came with are also enough for my setup. I will upgrade eventually but right now I have no heat issues so I don't worry about it. It is used for music production with some things being pretty cpu intensive and I never even heard my fans speed up. The case fans are whisper quiet. It also has dust covers on all the inlet ports, which actually do a very good job of keeping the dust out of the components. Just remember to clean the dust covers at least once a month. I would shoot for twice, but I also like my computer clean. 100% would recommend. ### ⭐⭐⭐⭐⭐ ) I found this case to have an extremely good amount of airflow *by L***N on Reviewed in the United States on September 21, 2015* IntroductionLet me start by saying this case is being reviewed by a avid pc Enthusiast This case is housing my personal gaming rig. This case is extremely well thought out, first there's no optical bays to get in the way. (lets face it optical media isnt used anymore.) I found this case to have an extremely good amount of airflow. my system runs a lot cooler now due to the new case.Cable management:This case has some of the best cable management options I have ever seen, on the back side of the case you have over an inch of cable management room to tie down all your cables in the back with Velcro ties that are included. On the back is where you can find the hard drive mounts. You can mount 3 3.5 inch or 3 2.5 inch drives on the main hdd sleds. As well as there are 2 more ssd mounts on the back of the case panel.There is plenty of water coaling and air coaling possibility in this case. you can fit up to a 360 mm rad in the front along with a 480mm rad in the top. There is an area for mounting a resevuar along with a place to mount a water coiling pump. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/15292205-fractal-design-define-s-mid-tower-computer-case-atx-optimized](https://www.desertcart.co.uk/products/15292205-fractal-design-define-s-mid-tower-computer-case-atx-optimized) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-16*