I've just bought this board and am using 2 Nexus 120mm fans for the cpu\nand chassis fan on a amd64 3500 with scythe ninja cooler, and running\nv1009 bios. Great combination for a quiet system, but I can't control\nthe fan speeds.\n\nI've tried Q-fan in the bios and the lowest setting that causes the fans\nto run at full speed is 51 C. When just browsing the net I'm at 33 C on\nthe cpu (currently this system is not in a case), yet both fans are\nstill spinning but somewhat more slowly than usual. The speed readings\non the cpu fan is 3000 rpm, and the chassis 42187 both in AiBooster and\nsame readings in Speedfan. Given that these fans are rated at 1000 rpm\nand its very clear they are not running anywhere those speeds something\nis quite amiss.\n\nIn speedfan there is an advanced setting to reverse the output of the\npwm - if a fan physically slows down but the speed indicator goes up -\nthis is supposed to fix that - however it doesn't.\n\nI've tried Qfan off in the bios and run just with Speedfan - but\nspeedfan doesn't seem to be able to control the speeds at all and I have\nset the temp./fan relations all up correctly.\n\nTwo questions:\n1) is this problem motherboard specific (have others got q-fan or\nspeedfan to work well) or is it due to my Nexus fans (not putting out\nsufficient speed signal voltage perhaps?) and\n2) what software / fan combinations are working for good fan/temperature\ncontrol?\n\nWould be a shame to have to scrap the Nexus fans as they are ultra-quiet\neven at the stock speed of around 1100 rpm.\n\nThanks.