10 Best Pc Cases That Support 420mm Radiator of 2025

Tested and Reviewed: Top 10 Pc Cases That Support 420mm Radiator deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Thermaltake

Thermaltake View 380 XL TG ARGB; 4x120mm ARGB Lite Fans Included; 360mm Radiator Support; 420mm GPU Clearance; Hidden Connector Support; Dual Chamber; Black; CA-11E-00M1WN-AZ

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Editor's bottom line:

“This pc cases that support 420mm radiator is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Built for the ViewWrapped with a combination of 4mm Tempered glass and mesh panels that View 380 XL provides an excellent look at the system inside while still providing plenty of cooling.
Hidden Connector Support Extra cutouts allow support for ATX hidden connector motherboards such ASUS BTF, MSI PROJECT ZERO, and GIGABYTE PROJECT STEALTH to hide cables for a cleaner build.
Its Pretty Roomy in HereFeaturing support for up to ten 120mm fans as well as 360mm radiator support on the top and side of the chassis. Even maxxed out on cooling the View 380 XL has plenty of space to work in while building and maintenance.
Cool Out the Box Preinstalled are three 120mm ARGB Lite fans mounted on the side angeled tray as intake along with a single additonal fan mounted in the rear as exhaust to start you off.
Anglular MeshLocated next to the bottom mounted I/O in the front side of the chassis we have angled out the side fan tray to better angle incoming air towards components, and to maintain the clean look of the View series we added in an angled mesh panel.

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Picked by 397 people today

9.5

ANSAITE

ANSAITE PC CASE 9 PWM ARGB Fans Pre-Installed, Mid-Tower Gaming PC Case, Panoramic Tempered Glass Computer Case with Type-C,420mm&360mm Radiator Support，Black,K9

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Main Highlights

[Cooling ARGB PC Case from ANSAITE K9 ]Reason---K9 upgraded computer case comes pre-installed with 9 high-quality prismatic ARGB fans. Featuring a 270° panoramic tempered glass side panel, providing stunning visual effects and strong airflow. H09 offers an ultimate comfortable experience in office and gaming scenarios, making it the most cost-effective "Black Knight" on the market!
[Pre-installed 9 PWM ARGB Prism Fans] Top pre-installed with 3×120mm forward-blade fans, bottom pre-installed with 3×120mm reverse-blade fans (H12R ARGB PWM), side panel pre-installed with 3×120mm reverse fans (reverse-blade design combines aesthetics with intake cooling efficiency).
[Powerful Airflow Cooling]H09 PC Case utilizes a more-channel airflow designhorizontal for CPUto deliver focused and efficient cooling. with the top serving as the main exhaust, create a vertical airflow design. Both the top and bottom of H09 mid-tower ATX case feature magnetic dust filters, maintaining cooling performance while minimizing internal dust accumulation.
[I/O Panel]-- 1 x USB3.2 Gen 2 TYPE-C Port /1 x USB3.0 Port / 1 x HD Audio/ Power Button / Restart Button . ANSAITE PC chassis maximizes external interfaces to enhance functionality, meeting the diverse demands of daily office work and gaming.
[Back-Connect Ready]Ample cable management spaces combined with a back-connect design maintain a clean front panel while optimizing airflow.
[Tower Case with Powerful Space Layout]The H09 gaming case features an ANSAITE-optimized internal structure with meticulously planned compartments. Installation is seamless, allowing users to customize their build freely and fully immerse in gaming! Compatible with mainstream hardware: Supports graphics cards up to 460mm (18.11 inches), CPU coolers up to 175mm in height, 420mm /360mm radiators on top, and power supplies up to 220mm in length;Equipped with mechanical hard drive and solid-state drive brackets; features 7 expandable PCIe slots; accommodates up to 11x 120mm case fans and 3 sets of side-by-side radiators.
[SYNC RGB]--ANSAITE H09 Tower Case Fans can be controlled by computer software. Enjoy high-performance cooling and easy lighting through asimple +5V ARGB motherboard header, no controller necessary.

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9.5

Thermaltake

Thermaltake AX500 TG Full Tower; 4x140mm CT Fans Included; SSI-EEB/SSI-CEB/E-ATX; 420mm Radiator Support; 460mm GPU Clearance; Supports up to 5X 3.5 or 6X 2.5; Hidden Connector; CA-11D-00F1WN-00

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Main Highlights

Workstation or Gaming Supports both SSI-CEB/SSI-EEB server boards as well as ATX boards such as E-ATX/ATX/mATX/mITX for versatile build options.
Cooling Support Fans: 9x140mm/14x120mm (ATX) 7x140mm/11x120mm (SSI), Radiators: up to 420mm, Air Coolers up to 185mm.
Multi-GPU Expandability 8 PCIe Expansion Slots for multi-GPU up to 460mm in length. GPU Brace included with 2 adjustable supports.
Plentiful Storage Up to 5x3.5" or 6x2.5" drives supported via two drive cages and one drive plate.
Hidden Connector Support Extra cutouts allow support for ATX & mATX hidden connector motherboards such ASUS BTF, MSI PROJECT ZERO, and GIGABYTE PROJECT STEALTH to hide cables for a cleaner build.

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9.2

ARCTIC

ARCTIC Xtender (Black) - PC Case, Tempered Panorama Glass, 2 x 420 mm Radiator Support, Full Tower, Big Tower, E-ATX, 5X A-RGB Fans pre-Mounted - Black

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Main Highlights

P14 Pro Reverse A-RGB: Three side-mounted fans with inverted airflow powerful for optimal airflow while showcasing the beautiful side of the fans.
TWO 420 MM RADIATORS: Supports two 420 mm, 360 mm, 280 mm, or 240 mm radiators for high-performance AIOs and custom loops.
TINTED GLASS PANEL: Dark-tinted side windows deliver a premium, minimalist look while A-RGB lighting brings the hardware inside to life.
A-RGB PSU COVER: Integrated glass panel with 24 individually addressable RGB LEDs illuminates the lower section of the case.
QUALITY OF LIFE FEATURES: 5 pre-installed A-RGB fans, magnetic filters, modular fan rails, removable HDD cage, SSD vibration dampening, functional I/O panel, and handy accessory box.

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9.0

NZXT

NZXT H9 Flow (2025) – Large Dual-Chamber ATX Mid-Tower Airflow PC Case – Includes 3 x 140mm & 1 x 120mm Fans – 420mm Radiator Support – Tempered Glass – Back-Connect Ready – White

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Main Highlights

DUAL-CHAMBER DESIGN Separates main components from the PSU and drives for improved thermal performance and cable management.
OPTIMIZED AIRFLOW Perforated steel panels and angled front-right fans ensure efficient cooling for high-performance builds.
PRE-INSTALLED FANS Includes three F140Q (CV) fans in the front-right and one F120Q (CV) fan in the rear. CV = Case Version (3-pin DC)
TEN-FAN CAPACITY Supports up to nine 140mm fans across the top, front-right, and bottom, plus one 120mm fan in the rear.
PANORAMIC VIEW Showcase every detail of your build with seamless, wraparound tempered glass paneling.
LARGE RADIATORS & GPUS Fits up to a 420mm radiator on the top and front-right, with plenty of clearance for high-end graphics cards.
EASY CABLE MANAGEMENT Extra-wide channels, built-in Velcro straps, and tie-down points make cable routing effortless.
BACK-CONNECT READY Compatible with rear-connecting motherboards like ASUS BTF and MSI Project Zero for a cable-free look.

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8.8

Thermaltake

Thermaltake Tower 300 Black Micro-ATX Case; 2x140mm CT Fan Included; Support Up to 420mm Radiator; Optional Chassis Stand Kit Allows Horizontal Display; CA-1Y4-00S1WN-AZ; 3 Year Warranty

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Main Highlights

Octagonal tower chassis supports up to M-ATX motherboad
2 x 140mm CT Fan included
Supports up to 120/140mm fan x 3 or 420mm radiator
Horizontal display enabled by optional Chassis Stand Kit (Need to purchase seprately)
Addional LCD Screen Kit avaialble for purchase

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8.6

Thermaltake

Thermaltake Tower 600 Racing Green Mid Tower; 2x140mm CT Fans Included; 420mm Radiator Support; 400mm GPU Clearance; Hidden Connector Support; Rotatable PCIe Slots; CA-1Z1-00MCWN-00

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Main Highlights

A Unique Design Featuring a unique octagon style chassis that was designed for presentation at either vertical or horizontal angles with plenty of flexibility and support for ATX builds and their supporting components.
Flexable Fitment Plenty of space for things like GPUs up to 400mm in length, Air Coolers up to 210mm in height, PSUs up to 220mm in length, and Radiators up to 420mm in size on the left and 360mm on the right.
Hidden Connector Support Extra cutouts allow support for ATX hidden connector motherboards such ASUS BTF, MSI PROJECT ZERO, and GIGABYTE PROJECT STEALTH to hide cables for a cleaner build.
Keep it Cool Includes 2x 140mm CT Fans pre-installed as exhaust at the top of the chassis, while able to support up to 9x 140mm fans or 13x 120mm fans.
Diverse Displays Explore options such as Horizontal placement with the optional Chassis Stand Kit / Enjoy real-time info or customizable GIFs and images with the optional 3.9" LCD Display (both sold separately)

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8.3

HYXN

HYXN H2 (2026) HYXN ATX PC case – Pre-Installed 8 PWM ARGB Fans (6X140mm, 2X120mm), Large Dual-Chamber ATX Mid-Tower Airflow Gaming PC Case, 420mm Radiator Support, with Type-C 3.2, Black

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Main Highlights

Fully transparent high-hardness tempered glass showcases every detail of the hardware.
The dual-chamber design separates hardware from power supplies and drivers, enhancing thermal performance and cable management.
Includes 8 ARGB PWM fans (6x140mm reverse, 2x120mm forward).
Large radiator system supporting 420mm radiators (compatible with dual-layer fan configurations), accommodating either 2x420mm or 3x360mm radiators simultaneously.
E-ATX/ATX/M-ATX/ITX motherboards, supports GPUs up to 455mm (17.91 inches), accommodates PSUs up to 220mm (8.66 inches), supports 2xHDD and 3xSSD, compatible with back-mounted motherboards, (Dimensions: 500*285*485mm/19.7* 11.2*19.1)
Streamlined cable management with an extra-large rear compartment, featuring built-in Velcro straps and mounting points for tidier wiring.
Front I/O Panel1x Type-C 3.2High-speed, 1 x USB 3.0, 1 x USB 2.0, Microphone & Audio, Power Button

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8.1

Lian Li

Lian Li V100 ATX Mid-Tower PC Case, LED RGB Strip, Display Platform Design with Tempered Glass, Support 420mm GPUs, 360mm Radiator, Side I/O & Optimized Airflow, Dust Filiter - White (V100W)

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Main Highlights

Frameless Tempered Glass: Features front and side frameless tempered glass panels for a clear view of internal components, enhancing aesthetics and structural integrity.
Display Platform: Unique slanted front PSU shroud with a dedicated display platform for figures and collectibles, keeping the case streamlined when not in use.
Elegant ARGB Strip: Integrated 26-LED ARGB strip offers full spectrum color control and synchronization with motherboard software, enhancing both visibility and aesthetics.
Back-connect Motherboard & Large GPU Support: Back-connect ATX and Micro-ATX motherboards, accommodating high-performance graphics cards. Excellent CPU cooler height clearance 178mm and ample GPU length clearance to 420mm, perfect for high-performance builds.
I/O Ports: USB 3.0 x 2 + USB type C x 1 + HD Audio.

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8.1

Lian Li

Lian Li V100 ATX Mid-Tower PC Case, LED RGB Strip, Display Platform Design with Tempered Glass, Support 420mm GPUs, 360mm Radiator, Side I/O & Optimized Airflow, Dust Filiter - Black (V100X)

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Main Highlights

Frameless Tempered Glass: Features front and side frameless tempered glass panels for a clear view of internal components, enhancing aesthetics and structural integrity.
Display Platform: Unique slanted front PSU shroud with a dedicated display platform for figures and collectibles, keeping the case streamlined when not in use.
Elegant ARGB Strip: Integrated 26-LED ARGB strip offers full spectrum color control and synchronization with motherboard software, enhancing both visibility and aesthetics.
Back-connect Motherboard & Large GPU Support: Back-connect ATX and Micro-ATX motherboards, accommodating high-performance graphics cards. Excellent CPU cooler height clearance 178mm and ample GPU length clearance to 420mm, perfect for high-performance builds.
I/O Ports: USB 3.0 x 2 + USB type C x 1 + HD Audio.

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Our Best Overall Choice

Best Choice

9.7

Thermaltake

Thermaltake View 380 XL TG ARGB; 4x120mm ARGB Lite Fans Included; 360mm Radiator Support; 420mm GPU Clearance; Hidden Connector Support; Dual Chamber; Black; CA-11E-00M1WN-AZ

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Built for the ViewWrapped with a combination of 4mm Tempered glass and mesh panels that View 380 XL provides an excellent look at the system inside while still providing plenty of cooling.
Hidden Connector Support Extra cutouts allow support for ATX hidden connector motherboards such ASUS BTF, MSI PROJECT ZERO, and GIGABYTE PROJECT STEALTH to hide cables for a cleaner build.
Its Pretty Roomy in HereFeaturing support for up to ten 120mm fans as well as 360mm radiator support on the top and side of the chassis. Even maxxed out on cooling the View 380 XL has plenty of space to work in while building and maintenance.
Cool Out the Box Preinstalled are three 120mm ARGB Lite fans mounted on the side angeled tray as intake along with a single additonal fan mounted in the rear as exhaust to start you off.
Anglular MeshLocated next to the bottom mounted I/O in the front side of the chassis we have angled out the side fan tray to better angle incoming air towards components, and to maintain the clean look of the View series we added in an angled mesh panel.

Show Price

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