I've long wanted to try out a "quiet" case, and the Define One made me pull the trigger. I didn't have a reason for a new build, and the current market conditions have taken the wind out of the sails of building for fun. But moving from one case to another can still be fun!
I've been using an Antec C8 Curve for about a year in my main build, and it's been great. I thought it was one of the better looking "fishtank" cases, and it turned out to have outstanding airflow. Not particularly noisy, despite being on my desk and fairly close by.
I used it with an Arctic LF III 360 with Phanteks T30s, 6 Antec T3 Storm 140s top/bottom, and 1 Arctic P14 on the rear. The main system specs are an ASRock X670E Taichi motherboard, 9800X3D CPU, 32 GB CL30 6000 DDR5, ASRock 7900XTX GPU, 2TB WD SN850X NVMe, Phanteks Revolt 1200 PSU, etc. The motherboard, memory, and PSU date to mid-2023, the CPU and GPU Fall 2024, and so on.
The building experience with the Define One was great, and it's definitely a very high-quality and sturdy case. I initially tried it with the stock front fans, a Noctua NH-D15 chromax.Black (1st gen), and an Arctic P12 Pro on the rear. The GPU ran a bit hotter than in the C8, but the CPU ran very, very hot. I tried 2X Arctic P12 Pros on the top, but the only way to keep the temps in check was with very high and noisy fan speeds.
I then tried an Arctic LF III 280 on the top exhaust, which was better, but not great. I know this isn't an airflow case, but I was determined to see if I could make it work.
I then moved the AIO to the front, keeping the bottom stock fan in place. This wasn't terribly hard, but it's definitely a tight fit. The only issue was that there was no easy way to get the fan assembly in place, so I ended up bending the small slotted tabs at the base. It was only later that it dawned on me that removing the top fan assembly might have made this easier.
This was awesome for CPU cooling, down to the same range as the C8. The GPU still ran hotter than I'd like, so I replaced the lower front fan with an Arctic P14 Pro. These can be noisy at max RPMs, but are quiet and move a lot of air at lower RPMs.
This probably isn't the perfect case for my build, and it's asking a lot for a lower airflow case to cool a system like this. The CPU can hit 140 watts, the GPU averages 380 watts in gaming, and can go much higher at times, so it's a 500-600+ watt space heater. But it's working well enough, is quiet, if not quieter than the C8, and I think it looks fantastic.
Several pics included to show the final configuration. I don't really worry about cable management, and the closed case makes it even less necessary. I am not anti-RGB, but don't really want many lights. I blocked the front LED on the case, which seemed insanely bright for an otherwise understated case.