The Corsair Carbide 678C is probably one of the more elaborate sound-focused cases from the brand. Usually, these type of enclosures come with a sturdy solid front panel and lack an easily accessible side panel. The Carbide 678C offers a well-built plastic front door, which allows for easy access to the front intake area of the enclosure behind a removable dust filter. On top of that, you will find an optical drive, which is quite unusual for a modern mid-tower chassis from a known brand.

Corsair further blurs the lines by allowing users to install up to three radiators within the chassis without any real-world compromises. You will still have access to all the storage and no shortage of space for your GPU even in such an extreme setup, which is more akin to a high-airflow enclosure than a silent case.

That does not make the Carbide 678C a bad choice, but may result in an increased appeal for the wrong target audience, which isn't meant to be a negative. That said, Corsair may be shooting itself in the foot slightly as those whose first requirement is noise encapsulation may be more inclined to look at the other Carbide cases out there, which also cost less than the $200 for the Carbide 678C. I would not be surprised to see other, more enthusiast-oriented cases from Corsair utilize the same frame with a different external design and feature set.

That last sentence is meant to be a compliment because the internal engineering is quite solid, with the three 140 mm retail-grade fans, individual steel hard-drive cages, and built-in, PWM-equipped fan hub. So if you are not too strict on a clear set of features and streamlined functions for silence, the Carbide 678C may just be your next enthusiast chassis with that understated look—away from all the RGB craziness. However, if you are strictly the quiet type, I have a hard time recommending this albeit great case over something more specifically geared towards hardcore sound encapsulation at a cheaper price point.