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Just do a search for "Ram Cooling Fan". I don't think our hosts sell them, but other e-tailers do. I have 2 but they came for free with a couple of DDR3 kits i bought years ago. As it happens, if you want to clock your ram past 3333 on Ryzen, it's always a good idea to use active cooling. It adds very little noise if you want a quiet system but can make a lot of difference to hitting a much higher ram clock. It can also help to spread a bit extra cooling to the VRM's as well if you are liquid cooled.
Can’t see this chip doing more than 3200mhz even with b die but live to be surprised , the missus needs a new kit for her platform upgrade but tempted to give her this fury kit in mine and upgrade , try get the most out my cpu where possible . Plenty of airflow in the chassis and have a radiator above the banks being used an exhaust so not to worried about overly direct cooling , I’m just unsure as to weather they absolutely need heatspreders . Tbf my MoBo is pants and could do with all the vrm cooling it can get .