be quiet! PURE BASE 501 Airflow Black Tower

be quiet! PURE BASE 501 Airflow Window Black | Compact High-Airflow ATX Case

The be quiet! PURE BASE 501 Airflow Window Black Midi Tower is a compact ATX case designed for users who want a clean, timeless look with powerful airflow. It combines a classic appearance with practical cooling options, making it ideal for both air-cooled and liquid-cooled builds.

Key Specifications

High-Airflow Cooling for Demanding Builds

The PURE BASE 501 Airflow Window Black is built with cooling performance in mind. It includes a 140 mm Pure Wings 3 fan optimised for high airflow, with seven fan blades designed to reduce turbulence and noise. Up to three front fans or a 360 mm radiator can be installed, plus two top fans or a 240 mm radiator, giving you excellent cooling flexibility for high-performance hardware.

Compact Yet Spacious Interior

Despite its compact footprint, this case offers generous space for high-end components. It supports graphics cards up to 360 mm long and CPU coolers up to 17.8 cm tall. With seven expansion slots and room for up to five 2.5″ drives plus two 3.5″ drives, you can build a powerful system without compromise.

Versatile GPU Orientation with Rotatable PCIe Slots

A standout feature is the ability to rotate the PCIe slots 90° for vertical GPU mounting. This allows for upright installation of wide graphics cards, creating a striking visual effect when paired with the optional be quiet! Riser Cable. The spacing is perfect for anti-sag support, keeping your GPU secure and well-displayed.

Smart Cable Management in a Compact Frame

Cable management is made simple with integrated routing options that help keep your build tidy. The compact design is optimised to make the most of available space, so even in a smaller case, you can achieve a clean, professional finish.

Box Contents

• be quiet! PURE BASE 501 Airflow Window Black Midi Tower
• 1x 140 mm Pure Wings 3 PWM fan (front)
• 1x 140 mm Pure Wings 3 PWM fan (rear)
• Mounting hardware and screws
• User manual

Check before you buy

• Confirm your motherboard form factor (ATX, micro ATX, or Mini-ITX) fits.
• Verify your CPU cooler height is under 17.8 cm.
• Check your graphics card length is within 360 mm.
• Ensure your PSU length is under 18 cm.

Frequently Asked Questions

Q: How many fans come pre-installed?

A: Two 140 mm Pure Wings 3 PWM fans are included—one front, one rear.

Q: Can I install a 360 mm radiator?

A: Yes, up to a 360 mm radiator is supported in the front.

Q: Is there a side window?

A: Yes, it features a tinted tempered glass side panel with black painted bars.

Q: Does it include a power supply?

A: No, the power supply is not included and must be purchased separately.

The Consultant’s Verdict & Warranty

The be quiet! PURE BASE 501 Airflow Window Black Midi Tower is perfect for builders who want a compact, stylish case with excellent airflow and flexible cooling options. Its clean design, vertical GPU support, and smart cable management make it a strong choice for both gaming and professional systems. Covered by the standard Manufacturer Warranty.