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4 Best Montech PC Cases Under $100, Compared

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As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.

Finding the best montech PC cases under $100 requires looking at published specs rather than marketing claims. We compared 4 models to help you choose based on actual dimensions, support, and included features. The Montech Air 903 E-ATX Mid-Tower leads this list because it supports E-ATX motherboards and includes pre-installed fans for immediate cooling. This mid-tower chassis measures 19.4 inches in height and 18.8 inches in length, providing ample space for large components. Each pick reflects specific data points from the manufacturer listings. Use this guide to decide which case fits your motherboard size and cooling needs.

Quick picks

#ProductBest forPrice
1 Montech Air 903 E-ATX Mid-Tower Best overall E-ATX builds needing pre-installed fans Check price of Montech Air 903 E-ATX Mid-Tower on Amazon
2 Montech XR White Panoramic ATX Case Best budget white glass showcase builds with large GPUs Check price of Montech XR White Panoramic ATX Case on Amazon
3 Montech King 45 Panoramic ATX Mid-Tower Also great compact ATX builds with high-end cooling Check price of Montech King 45 Panoramic ATX Mid-Tower on Amazon
4 Montech TG3 Curved ATX White Best premium ARGB display builds with ATX boards Check price of Montech TG3 Curved ATX White on Amazon

The best fit for you

Our 4 picks

Best overall

Montech Air 903 E-ATX Mid-Tower

Best for: E-ATX builds needing pre-installed fans

Motherboard Support
E-ATX
Case Type
Mid Tower
Use
Gaming
Dimensions
18.8 × 9.05 × 19.4 inches
Weight
15.1 pounds

View on Amazon: Montech Air 903 E-ATX Mid-Tower Affiliate link

This mid-tower case supports E-ATX motherboards and includes pre-installed fans for immediate airflow. Its dimensions are 18.8 inches long, 9.05 inches wide, and 19.4 inches high. The white finish suits modern builds. You get high airflow capacity without extra fan purchases. It fits gaming setups that need space for larger components.

Pros

  • Supports E-ATX motherboards
  • Pre-installed fans included
  • High airflow design
  • White color option

Cons

  • Mid-tower form factor limits extreme component sizes
  • No tempered glass side panel listed in specs
  • Weight of 15.1 pounds adds bulk

Good fit if

  • You need E-ATX motherboard support
  • You want pre-installed cooling fans
  • You prefer a white build theme

Skip if

  • You require a full-tower chassis
  • You need RGB lighting control
  • You prefer a black finish

Verdict: Montech Air 903 Max White E-ATX offers E-ATX support and pre-installed fans for high airflow. It suits builders who need room for large motherboards and immediate cooling in a white mid-tower chassis.

Best budget

Montech XR White Panoramic ATX Case

Best for: white glass showcase builds with large GPUs

Motherboard Support
ATX
Case Type
Mid Tower
Side Panel
Tempered Glass
Included Fans
3x 120 mm ARGB PWM
Radiator Support
360 mm
Max GPU Length
420 mm

View on Amazon: Montech XR White Panoramic ATX Case Affiliate link

The Montech XR is a white ATX mid-tower case featuring a panoramic front and side tempered glass design. It includes three pre-installed 120 mm ARGB PWM fans and supports up to nine fans or a 360 mm top radiator. The chassis offers 420 mm GPU clearance and 175 mm CPU cooler clearance. Magnetic filters on the top, side, and bottom simplify maintenance. This model suits gamers seeking a showcase-style build with strong airflow and lighting.

Pros

  • Panoramic front and side tempered glass panels
  • Three pre-installed 120 mm ARGB PWM fans
  • 420 mm GPU clearance for large graphics cards
  • Removable magnetic filters for easy cleaning
  • USB-C and two USB 3.0 ports on I/O

Cons

  • Mid-tower size may not fit E-ATX motherboards
  • Only three fans included despite support for nine
  • No mention of software control for ARGB lighting

Good fit if

  • You want a white case with a glass showcase design
  • You need 420 mm clearance for large GPUs
  • You prefer pre-installed fans with ARGB lighting

Skip if

  • You require E-ATX motherboard support
  • You need a mesh front panel for maximum airflow
  • You prefer a black chassis color

Verdict: The Montech XR Panoramic ATX White is a strong fit for gamers who want a white, glass-heavy showcase case with ample GPU clearance. It offers a balanced cooling layout and convenient I/O ports for daily use.

Also great

Montech King 45 Panoramic ATX Mid-Tower

Best for: compact ATX builds with high-end cooling

Motherboard Support
ATX
Case Type
Mid-Tower
Side Panel
Curved Tempered Glass
Radiator Support
360mm
Max GPU Length
435mm
Compatible Device
Radiator

View on Amazon: Montech King 45 Panoramic ATX Mid-Tower Affiliate link

The Montech King 45 is an ATX mid-tower case featuring a dual-chamber design and a curved tempered glass side panel. It supports 360 mm radiators up to 84 mm thick and oversized GPUs. The compact footprint measures 17.7 x 9.6 x 18.2 inches. This case suits builders who want a clean, professional look with strong bottom-to-top chimney airflow for high-performance hardware.

Pros

  • Curved tempered glass side panel for a panoramic view
  • Dual-chamber design hides cables and maintains airflow
  • Supports 360 mm top-mounted radiators
  • Fits oversized GPUs in a compact mid-tower footprint

Cons

  • Limited motherboard support to ATX only
  • Heavier build at 17.9 pounds
  • No mention of included case fans in the data

Good fit if

  • You want a clean, dual-chamber aesthetic
  • You need a compact case for high-end components
  • You prefer bottom-to-top chimney airflow

Skip if

  • You require E-ATX motherboard support
  • You need a larger tower size
  • You prioritize a lightweight build under 15 pounds

Verdict: Montech King 45 Panoramic ATX Mid-Tower fits builders who value a compact, clean interior with strong cooling potential for ATX systems.

Best premium

Montech TG3 Curved ATX White

Best for: ARGB display builds with ATX boards

Motherboard Support
ATX, Micro-ATX, Mini-ITX
Side Panel
Curved Glass
Included Fans
4 ARGB Fans
Radiator Support
360mm
Max GPU Length
430mm
Connectivity
Type-C

View on Amazon: Montech TG3 Curved ATX White Affiliate link

The Montech TG3 Curved ATX White case features a 15° curved glass side panel and includes four ARGB fans. It supports ATX, Micro-ATX, and Mini-ITX motherboards with up to 430 mm GPU clearance. The design highlights hardware with top, bottom, and PSU shroud lighting. It offers top I/O ports and supports up to nine fans for cooling.

Pros

  • Includes 4 ARGB fans for immediate lighting
  • 15° curved glass side panel for clear viewing
  • Supports ATX, Micro-ATX, and Mini-ITX boards
  • 430 mm maximum GPU length clearance

Cons

  • Heavier build at 22.5 pounds
  • Smaller internal volume than dual-chamber designs
  • No mention of wireless control or app support

Good fit if

  • You want pre-installed ARGB lighting
  • You prefer a curved glass aesthetic
  • You use ATX or smaller motherboards

Skip if

  • You need dual-chamber airflow separation
  • You require wireless fan control
  • You prefer a lighter case for moving

Verdict: Montech TG3 Curved ATX White offers strong visual appeal with four included ARGB fans and a curved glass panel. It is ideal for builders with ATX or smaller boards who want a display-ready case without extra fan purchases.

Specifications side by side

Spec Montech Air 903 E-ATX Mid-Tower Montech XR White Panoramic ATX Case Montech King 45 Panoramic ATX Mid-Tower Montech TG3 Curved ATX White
Motherboard Support E-ATX ATX ATX ATX, Micro-ATX, Mini-ITX
Case Type Mid Tower Mid Tower Mid-Tower not stated
Side Panel not stated Tempered Glass Curved Tempered Glass Curved Glass
Included Fans not stated 3x 120 mm ARGB PWM not stated 4 ARGB Fans
Radiator Support not stated 360 mm 360mm 360mm
Max GPU Length not stated 420 mm 435mm 430mm
Tower Size Mid-Tower Mid-Tower Mid-Tower not stated
Use Gaming Gaming not stated not stated
Lighting not stated ARGB not stated ARGB
Connectivity not stated not stated not stated Type-C
Compatible Device not stated Radiator Radiator Radiator
Dimensions 18.8 × 9.05 × 19.4 inches 17.1 × 8.98 × 17.7 inches 17.7 × 18.2 × 9.6 inches 18.3 × 9.41 × 20.8 inches
Weight 15.1 pounds 14.5 pounds 17.9 pounds 22.5 pounds
Color White White Black White
Model AIR903MAXW XR-W KING45B TG3CurvedW
Size not stated XR not stated not stated

Key Specs for Choosing Montech Cases

  1. Check Motherboard Compatibility

    Verify your motherboard size fits the case support. The Montech Air 903 accepts E-ATX boards, offering extra room for large components. Most other models, like the XR and King 45, support standard ATX. If you have a smaller micro-ATX board, these cases still work but may leave unused space. Always match your board to the listed support to avoid installation issues.

  2. Assess Tower Dimensions

    Measure your desk space against case height and depth. The Air 903 stands 19.4 inches tall and 18.8 inches deep. The XR is slightly shorter at 17.7 inches high. The King 45 has a unique horizontal orientation, measuring 18.2 inches wide. Ensure your desk can accommodate these dimensions. Mid-tower designs generally fit standard desks, but larger footprints require more clearance.

  3. Review Included Fans

    Check if the case includes pre-installed fans. The Air 903 comes with fans already mounted, saving you immediate purchase costs. The TG3 Curved includes four ARGB fans for enhanced airflow and lighting. Other models may not list included fans, requiring you to buy them separately. Pre-installed fans provide immediate cooling upon assembly. This feature is valuable for builders who want a plug-and-play experience.

  4. Select Side Panel Style

    Decide between tempered glass and mesh panels. The XR White features a panoramic glass design for a showcase look. The TG3 Curved also uses curved glass for visibility. The Air 903 likely uses mesh for maximum airflow, though specific material is not detailed here. Glass panels display internal components but may trap heat. Mesh panels improve cooling but hide internal hardware. Choose based on your priority for aesthetics or temperature control.

  5. Consider Lighting Features

    Identify if you need addressable RGB lighting. The XR and TG3 Curved models support ARGB fans. The TG3 includes four such fans for synchronized effects. The Air 903 does not list lighting specs, focusing instead on airflow. If you want customizable RGB effects, choose a model with ARGB support. Otherwise, a non-lighted case may offer better value for pure performance without extra wiring.

Frequently asked questions

Which Montech case supports E-ATX motherboards?

The Montech Air 903 E-ATX Mid-Tower supports E-ATX boards. It measures 19.4 inches in height and 18.8 inches in length. This model is designed for builders who need extra room for large motherboards. It also includes pre-installed fans to help with airflow right away.

Does the Montech XR White have ARGB lighting?

Yes, the Montech XR White Panoramic ATX Case features ARGB lighting. It is built as a showcase unit with a panoramic glass panel. The case weighs 14.5 pounds and measures 17.7 inches in height. It provides ample space for large graphics cards inside.

What is the weight of the Montech TG3 Curved case?

The Montech TG3 Curved ATX White weighs 22.5 pounds. It is the heaviest option on this list. The case measures 20.8 inches in height and 18.3 inches in length. It comes with four included ARGB fans for immediate cooling setup.

Can I fit an E-ATX board in the Montech XR?

No, the Montech XR White Panoramic ATX Case only supports standard ATX motherboards. It is not designed for E-ATX boards. If you need support for larger E-ATX motherboards, you should look at the Air 903 model instead. The XR is optimized for standard ATX builds.

Which Montech case is best for a white build?

The Montech Air 903 and TG3 Curved are both available in white. The Air 903 is a mid-tower that supports E-ATX boards. The TG3 Curved offers a curved glass panel and includes four ARGB fans. Both are suitable for white-themed gaming builds.

Does the Montech King 45 come with fans?

The provided data does not mention pre-installed fans for the Montech King 45 Panoramic ATX Mid-Tower. It is a compact black case that supports standard ATX motherboards. You may need to purchase fans separately for optimal airflow. The case weighs 17.9 pounds.

What are the dimensions of the Montech Air 903?

The Montech Air 903 E-ATX Mid-Tower measures 19.4 inches in height, 18.8 inches in length, and 9.05 inches in width. It weighs 15.1 pounds. These dimensions allow it to fit standard mid-tower spaces while providing room for E-ATX motherboards.

See also