Corsair's new $100 Carbide Series 300R with a window is a great choice for anyone who wants a case with some nice features but doesn't want to spend too much money.  Able to fit long video cards and large heatsinks and a serious amount of 5.25" and 3.5" drive bays which are not only tool-less but are also convertible to 2.5" bays for SSDs.  You can fit a half dozen 120mm or 140mm fans for air cooling and as there are 7 expansion slots this makes a great home for multi-GPU systems.  Read the PR below and head to Corsair for the tech specs and purchasing information.

FREMONT, California — July 12, 2012 — Corsair®, a worldwide designer and supplier of high-performance components to the PC gaming hardware market, today announced that the Carbide Series™ 300R Compact PC Gaming Case is now available in a windowed version.

First released in January, the Carbide 300R PC case has won accolades for its compact, streamlined, builder-friendly design. The new Carbide Series 300R windowed version of the case features a side window that gives PC builders the ability to demonstrate their modding skills while also showcasing internal PC components, such as Corsair's PC performance-tuned Vengeance® DDR3 memory, GS Series™ power supplies, Hydro Series™ CPU coolers, and Air Series™ cooling fans.

The Corsair Carbide Series 300R: a compact expression of Corsair's gaming PC philosophy

Great gaming systems begin with a great case, and the Carbide Series 300R provides a remarkable number of in-demand features in an attractive, compact chassis. Builder-friendly features include three tool-free optical drive bays and four tool-free hard drive bays with integrated 2.5" SSD compatibility. There's room for high-end GPUs of up to 450mm in length, and the matte black interior incorporates Corsair's innovative cable routing system that helps keep wires and cables out of sight for a clean look and improved airflow. The 300R comes with intake and exhaust fans, with room for five additional fans including dual side-mounted fans for direct GPU cooling.