There are two 92x10mm fans fastened in the cooler’s casing:
The diameter of the impellers and motors of these 11-blade fans is 87 and 33 millimeters, respectively. You can learn the electrical specs of the fans on their labels:
The speed of the fans is PWM-regulated within a range of 900 to 2000 RPM. The bottom noise level is specified to be 0.5 sones. The fluid dynamic bearing has a service life of 6 years. The peak power draw of each fan is no higher than 1.8 watts. The combined power consumption of both fans is below 2.9 watts according to our measurements.
You can connect the fans to a 3- or 4-pin connector on your graphics card or to your PSU’s PATA power connector (using the included 12/7V adapter).
Having four screw holes in each corner of the mounting frame, the Twin Turbo II is compatible with a lot of graphics cards, both modern and ancient ones.
You can also move the mounting frame along the cooler’s base using the three threaded holes:
This allows adjusting the cooler’s base to match the GPU location on the particular graphics card. The distance between the center of the cooler's base and its left (shorter) edge is 80 millimeters.
The installation procedure is most simple. You just fasten the cooler with screws from the reverse side of the graphics card using the included bushings. To make the procedure even simpler, you may want to take the plastic casing with fans off the heatsink and install the latter first.
Then you just hang the casing onto the heatsink, locking the latches at the sides.
The photo above shows the Accelero Twin Turbo II installed on an MSI Radeon HD 6950 Twin Frozr III 1GD5 Power Edition/OC which is as long as 242 millimeters. As you can see, the cooler is long enough for the entire card. It may turn out to be too short if installed on a longer card, though. For example, on a Gigabyte GeForce GTX 580 SuperOverclock which has a length of 277 millimeters:
It is for such long cards that the other new product from Arctic Cooling is designed for, though. Winding up this section, we can only tell you that the installed Twin Turbo II blocks the neighboring PCI slot. It is also desirable that the next expansion slot were free, too.