The Asus Prime AP303 makes a strong first impression, and not just for its size. This new ATX mid-tower case updates the Prime AP201 with smarter space, better airflow, and a dedicated GPU bracket aimed directly at the weight of upcoming Nvidia GeForce RTX 50 series cards.
Prime AP303 supports massive GPUs without compromise
At 44 liters, the Prime AP303 grows well beyond its predecessor, allowing full ATX motherboard support and power supplies up to 180 mm long. That extra headroom clears the way for triple-slot graphics cards stretching to 360 mm in length an essential upgrade as high-end GPUs get heavier and more demanding.
To counteract GPU sag, Asus includes a reinforced bracket designed specifically for GeForce RTX 50 series cards. It’s a simple addition, but one that serious builders will appreciate.
Clean layout, cooler build
The Prime AP303 doesn’t just make room for big hardware it also makes room for clean assembly. Builders get a 34 mm-wide cable channel tucked behind the motherboard tray, allowing for smoother routing and airflow. CPU coolers up to 165 mm tall are supported too, which means most popular air towers will fit without a struggle.
Meanwhile, the front I/O setup includes both USB Type-A and Type-C ports, keeping connectivity simple but current.
Prime AP303 offers configuration options
Asus is shipping the case in four variants: black or white, each available with either a mesh or tempered glass side panel. That means builders can prioritize airflow or aesthetics without giving up compatibility.
Here’s what else the Prime AP303 brings to the table:
- Support for 360 mm radiators
- GPU clearance up to 360 mm
- Full ATX motherboard support
- Up to 7 expansion slots
- Tool-free side panel access
- USB-C front panel support
GPU sag has met its match
With the Prime AP303, Asus isn’t just scaling up the Prime AP201; it’s targeting problems before they arrive. GPU sag on oversized RTX 50 cards won’t be a waiting game, and builders looking for both flexibility and structure now have a chassis that brings both.
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