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One of the few consistent criticisms of the 4000D cases I’ve seen is that Corsair chose to use very inexpensive fans in an otherwise very good case, so pretty much any fans you buy will be as good or better. The ones in there now are basic sleeve bearing fans, which will likely get noisy or fail within a few years. Sleeve bearing fans are generally rated for around 30,000 hrs lifespan. FYI, if you keep the current fans, don’t mount them to the top of the case. Sleeve bearing fans tend to fail much more quickly when mounted horizontally. Any 120mmx25mm case fans will work. If you want to stick with Corsair, their ML120 Magnetic Levitation fans are their best but expensive, or if you like RGB lighting they have a lot of fans to choose from. You can buy multi-fan kits that will save you some money. I replaced my stock fans (and added 2 more) with Noctua NF-A12x25 fans, which have SSO2 fluid/magnetic bearings that are rated for 150,000 hrs lifespan and run much quieter than the stock ones. With fans, you can go with the cheaper ones and expect to replace them every few years, or put in good ones that will run quieter and probably last for the life of the PC. Hope this helps. You can find lots of articles online about fans and the various bearing types, blade designs, etc. that the various manufacturers use.
Sorry, there was a problem. Please try again later.I personally used the basic fans at first and now have 6 Corsair LL120s 3 in front attached to AIO 2 up top and one in the rear.
Sorry, there was a problem. Please try again later.Hi MhZ, The fans are 120mm high airflow fans, they'll be equivalent to the SP Elite series: https://www.corsair.com/ww/en/Categories/Products/Fans/RGB-%26-LED-Fans/iCUE-SP-RGB-ELITE-Series-Fans/p/CO-9050109-WW https://www.corsair.com/ww/en/Categories/Products/Accessories-%7C-Parts/4000D-4000D-Airflow-120mm-3-pin-Fan%2C-Black%2C-1200-RPM/p/CC-8900456 -Brian
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