Completed Build, Performance, and Conclusion

The finished build in this case is going to look clean with a minimal of effort thanks to the excellent cable routing and proper component clearance.

The partitions on the right side and the bottom hide any cable mess from the hard drives and PSU, and the overall effect is very clean and professional.

Around back those velcro ties help keep cables out of sight, and everything is well organized without a lot of trouble. I did find the area behind the motherboard to be slightly shallow – but only because I am using cable extensions which add bulk. The rear panel did snap back into place without a problem, and the side did not bow out. I will always take as much cable room as a design can give, but the Define R6 is certainly adequate.

Temperatures and Noise Levels

Test Platform
Processor Intel Core i7-7700K
Motherboard ASUS ROG Strix H270I Gaming
Memory Crucial Ballistix Sport 4 GB 2400 MHz DDR4
Graphics Card AMD Radeon R9 290X (Reference)
Storage SanDisk 64 GB SATA 6.0 GB/s SSD
Power Supply SilverStone Strider ST55F-G PSU
CPU Cooler Noctua NH-U9S (PWM)
OS Windows 8.1 64-bit

Using the same test configuration of the previous few enclosure reviews we can see how the well-insulated Define R6 performed in its default configuration out of the box (two front intake fans, one rear exhaust fan, closed top panel).

Temps are very good, though open-air style enclosures are generally going to win that contest. Still, for a case that is designed for low noise these are excellent numbers.

Here we see the benefits of the insulation for the most part, though some recent cases have been excellent in that department as well. The very loud reference GPU cooler in the test system was very well controlled by the Define R6, and while it was just shy of the GPU noise from the Crystal 460X the higher-pitched sounds were more muted with the Define R6. Idle and CPU load noise were also very quiet from the Define R6, making it an outstanding choice for quiet general computing.


The performance of the Define R6 is in keeping with previous efforts from Fractal Design, with impressively low noise levels and very good temperatures as well. Fractal Design doesn’t just have a winner with the Define R6, they have one of the best overall ATX cases on the market right now. Is it perfect? Well, I could complain about a couple of things, such as the HDD trays (I like the type that slide in), and I would always want a little more space behind the motherboard for cables - but no case really is perfect. This one comes very close, however. Highly recommended!

« PreviousNext »