If you read the manual they posted recently it states that the fan headers are rated to 1 amp. But it doesn't say if there are 2, or 3 headers, or 3pin or 4pin, just intake and exhaust. If there are only 2 headers then you'll typically be limited to 4 fans per header. So if you max out all fans on the case you will most likely have to use the motherboard for the left 2 fans.