This bundle includes the Alphacool VPP Apex Pump and Alphacool Eisball reservoir. The Alphacool Apex VPP is a powerful pump that is compatible with the most common D5/VPP tops and reservoirs. The speed of the pump can be read out via the 4-pin fan connection and controlled via a PWM signal. The Apex VPP is powered via the SATA connection. Power supply Compared to Alphacool's ice pumps, the power is not supplied via a 4-pin Molex connector. Instead, the Apex VPP pump connects to the power supply using a SATA connector. Control The Apex VPP pump has a 4-pin fan connector that connects to the motherboard or to an external controller. The speed range of the pump can be controlled and read out via PWM. 2500-4500RPM The Alphacool Eisball reservoir with integrated pump top presents itself in a unique way. A spherical reservoir has never been seen before and it opens countless new possibilities, especially in the field of modding. From static single colour lighting to maybe an R2D2 mod: there are really no limits to your creativity. The pump disappears completely inside the Eisball. It is inserted into the Eisball from below and fastened with a special pump holder. All Alphacool's own D5 style pumps such as the VPP655 and VPP755 as well as all original Laing D5 pumps are suitable for installation. With the Eisball, the pump is completely inside the reservoir, and is therefore surrounded by the water. The water acts as additional noise insulation. The enclosed decouplers also reduce the transmission of vibrations to a minimum. All in all, a real Silent product! Eisball Dimensions: WxDxH: 117.51 x 128 x 128 mm