Question 1

Are these pwm? are these pwm when being used with the separate $25 tt sync controller?

Accepted Answer

With the included controller they are PWM, software controlled, via the maximum temperature sensor on your motherboard using HWiNFO32 to get the values.  There are currently no customization on which sensors to use nor can the ramp up be modified from default.  PWN can also be disabled and a static value set if you would like.  
If you purchase the tt sync controller, and your motherboard supports it, then these become PWM controlled via your motherboard using whatever options your particular motherboard has.  The TT software will no longer be used at all.
I have these fans, the sync controller, and a Aorus Z370 Gaming 7 and couldn't be happier.  Much better than using the included controller and software!

Question 2

I only need one fan,do i need a controller for using the light or can i connected to the mb connection directly ?

Accepted Answer

No, you need the controller. Its connector is proprietary to thermaltake

Question 3

Thinking about buying these fans, are they excellent? I mean, a process and there are not many breakdowns? Also, I am thinking of seven fans for my ca

Accepted Answer

The fans themselves are good. The controllers are complete trash. More often than not, they refuse to register on the USB bus, so you have no fan speed or RGB control. Your only options at that point are to restart the PC until the controller decides it wants to work, or reach into the PC, unplug the USB cable, then reconnect it manually to force the controller(s) to register.

I have two sets. I was going to buy a third. At this point, I'm tired of having to monkey around with them almost every time I start the PC, so I'm going to replace them with a different brand.

Thermaltake used to make really good fans. I've been using their products since 2006. Their refusal to fix their crappy fan controllers has put them at the bottom of my list.

Question 4

So all fans connect to the hub. Do they all need seperate power or are they powered by the hub? If so what are they powered by? Thanks

Accepted Answer

The fans get their power via the controller which can be powered from an additional controller with the provided jumper or connected directly to a fan connection point on your motherboard. There are You Tube videos that go in to detail on setup.

Thermaltake Riing Duo 140mm 16.8 Million RGB Color (Alexa, Razer Chroma) Software Enabled 2 Light Rings 18 Addressable LED 9 Blades Hydraulic Bearing Case/Radiator Fan, 3 Pack, CL-F078-PL14SW-A

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