Core V21 Core V21 Thermaltake Core V21 Micro Chassis Overview Core V21 Core V21 Core V21 Core V21
Core V21

Core V21

In stock

A micro chassis built in with a 200mm turbo fan, supporting types of cooling systems that includes DIY/AIO liquid cooling and air cooling units.

Thermaltake Core V21 Micro Chassis

As the latest addition to the Core V Series, the new Thermaltake Core V21 is a quadrate micro M-ATX-based chassis that offers an endless stackable and flexible thermal solution. It allows externally-modular upgrades for enthusiasts to create dual systems. Designed for use in either a vertical or horizontal orientation on the motherboard, users can customize the chassis for the best viewing presentation. A 200mm fan on the front panel ensures that the Core V21 delivers outstanding cooling performance with compatibility for extensive DIY/AIO LCS, further enhancing the reputation that the air cooling units of the series has become renowned for. Guaranteed to be an immensely powerful system, the Core V21 also has the ability to accommodate various overclocking components to boost performance even further where it counts!

*The product picture(s) is only for your reference.
For more detail, please refer to the product manual.

Vertical or Horizontal Motherboard Placement

The Core V21 is designed for use in either a vertical or horizontal orientation on the motherboard. Built for customization that reflects the enthusiast’s personality, it allows for adjustments to the chassis for the best viewing presentation while ensuring outstanding cooling performance. A removable PSU dust filter is embedded in the bottom panel of the chassis. Additionally, shockproof rubber gaskets on the PSU bracket help to minimize noise during operation.

Stackable and Flexible Thermal Solution

With its endless stackable design, the Core V21 is in a class above the rest. Virtually limitless utility is possible. It’s the first expandable system that allows enthusiasts to incorporate externally -modular upgrades. Stacked together, the chassis opens up space to expand the liquid cooling system, the storage solutions, or even create dual systems, thereby allowing for a dedicated top/bottom set-up for pure cooling. The maximum radiator length supported is 600mm at the front of the stack.

Remarkable Expansion

Designed for high-end gaming system compatibility, the Core V21’s modular drive racks allow gamers to easily install up to six data storage devices, a dual expansion slot VGA up to 350mm in length, and a tower CPU cooler up to 185mm in height. Even with a high-wattage PSU of up to 200mm in length, there’s still plenty of space available for cable management. Moreover, two 240mm radiators can be installed on top of the chassis, delivering superior cooling performance.

Optimized Ventilation

With its exceptional cooling ability, the Core V21 offers various mounting points to support all types of cooling systems, including DIY/AIO liquid-cooling systems and air-cooling units. A large 200mm fan is preinstalled on the front to guarantee that any type of gaming system can be accommodated.

Chambers Concept

The Core V21 is optimized for space management. It is divided into two main chambers: the upper chamber is made for cooling performance and efficiency, while the lower one is made for PSU and drive bays. Thanks to the removable 2.5”/3.5” drive device racks, there is plenty of flexibility to gain the maximum interior space when needed for advanced cooling performance or liquid systems build.

Tt LCS Certified is a Thermaltake exclusive certification applied to only products that pass the design and hardcore enthusiasts standards that a true LCS chassis should be held to. The Tt LCS certification was created so that we at Thermaltake can designate to all power users which chassis have been tested to be best compatible with extreme liquid cooling configurations to ensure you get the best performance from the best features and fitment.

Core V21 Radiator Supporting List

Radiator Compatibility List
360mm (120mm based) 360mm (180mm based) 420
Front * * * * * * * * * *
Top * * * * *          
Side (L/R) * *   * *          

*Highlighted parts are only on stacking mode

Water 3.0 Compatibility List
  Ultimate Extreme/
Extreme S
Pro Performer/
Performer C
Front * * * *
Top * * * *
Rear     * *
Bottom   * * *

More Information
P/N CA-1D5-00S1WN-00
Series Core
CASE TYPE Micro Case
Dimension (H x W x D) 336 x 320 x 424 mm
(13.2 x 12.6 x 16.7 inch)
NET WEIGHT 6.5 kg / 14.3 lb
SIDE PANEL Transparent Window
Color Exterior & Interior : Black
COOLING SYSTEM Front (intake) :
200 x 200 x 30 mm fan (800rpm, 13dBA)
Drive Bays
-Hidden : 3 x 3.5’’ or 2.5” , 3 x 2.5’’
MOTHERBOARDS 6.7” x 6.7” (Mini ITX) , 9.6” x 9.6” (Micro ATX)
LCS Upgradable Supports 1/2”、3/8”、1/4” water tube<br />
I/O Port USB 3.0 x 2, HD Audio x 1
PSU Standard PS2 PSU (optional)
1 x 120mm or 2 x 120mm
1 x 140mm or 2 x 140mm
1 x 200mm
1 x 120mm or 2 x 120mm or 3 x 120mm or 4 x 120mm
1 x 140mm or 2 x 140mm
1 x 120mm
1 x 140mm
1 x 120mm or 2 x 120mm
Left / Right Side:
1 x 120mm or 2 x 120mm
1 x 140mm or 2 x 140mm
1 x 120mm or 1 x 240mm
1 x 140mm
2 x 120mm or 2 x 240mm
1 x 140mm or 1 x 280mm
1 x 120mm
Left / Right Side:
1 x 120mm or 1 x 240mm
1 x 140mm or 1 x 280mm
CLEARANCE CPU cooler height limitation: 185mm
VGA length limitation: 350mm
PSU length limitation: 200mm (With Bottom Fan)

Rating: The Thermaltake Core V21 gets good 4.5 out of 5 stars


  • Price
  • Cooling
  • Build Quality
  • Tool-less
  • PSU Space
  • GPU Space
  • Water Cooling Solutions
  • Vertical or horizontal orientation


Modders Inc.

"Thermaltake Core V21 is by far one of the most fun mATX cases on the market I have put a system into yet."


 “Thermaltake have proven once again that they can create a unique product that is as appealing to first-time builders as it would be to enthusiast chassis modders. It doesn’t matter if you want an affordable chassis for a LAN gaming rig, or a customizable ultra-high-end stacked gaming rig, the Thermaltake Core V21 has got you covered. You will not find a better chassis for the same money.”


  • Great build quality
  • Stackable design
  • Modular interior
  • Extensive cooling support
  • Dust filters
  • Rotatable badge
  • Interchangeable side panels
  • Very competitive price
  • Easy to work with




  • интересный и оригинальный дизайн;
  • качественная сборка шасси, обработка кромок панелей и окраска корпуса;
  • толстая сталь (0,97 − 1,05 мм);
  • хорошая жесткость корпуса;
  • возможность установки длинных видеокарт (до 365 мм) и высоких процессорных СО (до 200 мм);
  • особенности компоновки шасси исключают прогиб материнской платы и провисание длинных карт расширения;
  • эффективное охлаждение компонентов системы;
  • наличие предустановленного тихоходного 200-мм вентилятора;
  • возможность удобной компоновки посадочных мест для установки вентиляторов и радиаторов СВО;
  • наличие четырех пылевых фильтров;
  • наличие множества перфорированных поверхностей, что обеспечивает хорошую продуваемость компонентов;
  • присутствие 6 отсеков для накопителей с возможностью безотверточного крепления;
  • использование разъемов USB 3.0 на передней панели;
  • возможность переконфигурирования корпуса благодаря сменным верхней, нижней и боковым панелям одинакового размера;
  • возможность экономии пространства путем установки двух аналогичных моделей друг на друга.



 "The V21 is an impressive design from Thermaltake. The ability to move the fans and radiators around to your heart’s content is fascinating while the option of stacking two Core V21 chassis is novel. Thermaltake’s idea of using the upper chassis to house a home brew liquid cooling system is interesting and eye-catching but realistically it is irrelevant for mainstream users."


  • Front 200mm fan.
  • Two magnetic dust filters help keep the chassis clean.
  • Cooling rails allow many options for fan and radiator mounts.
  • Sensibly low price.
  • Case can be oriented whichever way you like.
  • Front panel looks smart.
  • Huge window to display your components.
  • Ability to stack two V21 cases together.




- Size
- Mainboard/Panels Orientation
- Room For Up To 5 Radiators and/or 11 Fans
- 200mm Preinstalled Fan
- Almost Completely Tool-Less Design
- Space For 185mm Tall CPU Coolers, 350mm Long Graphics Cards and 200mm Long PSUs
- 6 Drive Trays
- Removable Dust-Filters
- 5 PCI Expansion Slots
- Stackable Design
- Price (For Some)


On retient de ce modèle sa modularité et ses capacités d'intégration. Le Core V21 offre plusieurs possibilités d'agencement qui pourront aider les indécis à faire un choix. Le look choisi par la marque pour cette gamme sera sujet à discussion et pourrait être un argument en défaveur de ce modèle. Si les capacités de refroidissement sont tout juste correctes à pleine vitesse, elles pourront être grandement améliorées par un choix plus adéquat du matériel intégré, ou l'ajout de ventilateurs supplémentaires vu la multitude d'espaces disponibles. La maitrise du niveau sonore et des vibrations estompe légèrement cette contreperformance. Le boîtier ne souffre d'aucun défaut de fabrication, se révèle robuste et ne craint pas d'être déplacé. Les matériaux utilisés sont de bonne facture; nous ne pouvons pas attaquer le modèle sur ce point. Le tarif affiché pour acquérir ce modèle est plutôt cohérent, bien que, comme nous le soulignons en fin de test, un ventilateur supplémentaire aurait été le bienvenu. Au final, c'est avec quatre étoiles que le Thermaltake Core V21 nous quitte, échaudé par ce que lui a fait enduré le Comptoir !

Hardware Journal

Es muss nicht immer teuer sein, um ein schickes und leistungsfähiges Gehäuse für seine Hardware zu haben. Thermaltake zeigt das mit dem Core V21, einemCube für Micro-ATX Mainboards mit ordentlich Platz. Die Verarbeitung ist in Ordnung und zeigt sich wertig verarbeitet, es gibt keine bemerkenswerten Mängel. Im Inneren zeigt sich viel Platz für tolle Hardware, viele Lüfterplätze sowohl im Deckel, Heck, Boden als auch der Front und den Seitenteilen.


+ gute, solide Verarbeitung

+ einfache & zugängliche Montage
+ sehr viele Lüfterplätze
+ faires Preis-Leistungsverhältnis
+ genügend viele Staubfilter
+ teilweise werkzeuglose Montage
+ vier abnehmbare Seitenteile 
+ stapelbar