The first thing you may notice different is that fan motor now pulls double duty as the pump motor as well. This radical new design is said to optimize cooling with additional help from the extra-large pump, more powerful fan, and directional diffuser. The 240 mm Antec Kuhler 1250 will feature two of these extra-large pumps to improve flow and cooling dissipation. Antec has also redesigned the universal mounting bracket to work with any AMD or Intel socket.
Each of the new Kuhler H2O coolers will fit into a different market place. The Kuhler 650 with temperature controlled RGB LED and integrated firmware for fan speed control will be priced to rival top-tier air coolers. The Kuhler 950 with a more robust radiator (double the height of the 650), two PWN fans, and support for Antec GRID CPU Cooler software will serve as the high performance model in the line-up. The Kuhler 1250 will focus more on either extreme performance and/or quiet operation and as the flagship of the series, will also support the Antec GRID CPU Cooler software.
If you are in the market for a liquid cooler come Q3 2013, then you may want to keep an eye out for this series. Prices are not yet available, but Antec has never failed to be competitive with their pricing. Full press release is posted below.