Noctua today presented a new revision of its much acclaimed NH-U12DX and NH-U9DX quiet CPU coolers for Intel Xeon workstations and servers. The new i4 models support LGA2011 (both Square and Narrow ILM), LGA1356 and LGA1366 based Xeon platforms and now come with PWM fans for automatic speed control. Fitted with the professional SecuFirm2™ mounting system and bundled with Noctua's industrial-grade NT-H1 thermal compound, the NH-U12DX i4 and NH-U9DX i4 form complete premium quality packages for quietly cooling Xeon based workstations and servers.

"Builders of quiet workstations and servers still have trouble finding quality cooling solutions for Intel's LGA2011 socket with Narrow ILM mounting", explains Mag. Roland Mossig (Noctua CEO), "so we've decided to update our DX line of coolers to work with both Square ILM and Narrow ILM based LGA2011 platforms. At the same time, we've added PWM control and switched the U12 version to the new, slimmer layout of the NH-U12S, which not only provides better performance but also ensures easier access to the RAM slots, which was another long time request from our industry partners."

Supporting Intel’s LGA2011 (both Square and Narrow ILM), LGA1356 and LGA1366 Xeon platforms, the SecuFirm2™ mounting included with the NH-U12DX i4 and NH-U9DX i4 has been custom designed for system integrators who require both perfect contact pressure and quick, convenient installation.

Both the NF-F12 120mm fan of the NH-U12DX i4 and the two NF-B9 92mm fans of the NH-U9DX i4 now support PWM for fully automatic speed control. In addition, the maximum fan speed can be reduced using the supplied Low-Noise Adaptors for even quieter operation.

Thanks to its slim design with only 45mm fin depth, the NH-U12DX i4 ensures easy access to the RAM slots. When installed parallel to the slots, it will not overhang the memory on LGA1356, LGA1366 and LGA2011 Square ILM even with two fans installed, thus providing full compatibility with tall RAM heatsinks.

While the superior cooling performance of the NH-U12DX i4 makes it ideal for quiet workstation builds, the 125mm height of the NH-U9DX i4 makes it fully compatible with standard 4U server cases.

Pricing and availability The NH-U9DX i4 and NH-U12DX i4 will be available shortly at suggested retail prices of EUR 59.90 / USD 64.90 (NH-U9DX i4) and EUR 69.90 / USD 74.90 (NH-U12DX i4).

Since their introduction in late 2012, Noctua's NH-L9 series low profile coolers have already won more than 100 awards and recommendations from the international press. The NH-L9a's original mounting system uses a backplate as per the AMD specifications in order to assure perfect contact pressure and to prevent the mainboard from being bent. However, this system is incompatible with mainboards such as the ASRock FM2A75M-ITX or FM2A85X-ITX, which do not use a stock backplate and have components on the rear side, inside the area which, according to the AMD specifications, is reserved for the backplate. The new, alternative mounting option makes use of four separate spacers instead of the backplate and thus allows to install the cooler on these mainboards.

Customers can obtain the new mounting parts from Noctua's customer service free of charge after providing a proof of purchase (scan, photo or electronic copy of the invoice) of both a Noctua NH-L9a heatsink and an AMD mainboard that is incompatible with the original mounting system. In addition, the new NM-APS3 spacers will from now on be included within the NH-L9a's scope of delivery, making it compatible with mainboards such as the ASRock FM2A75M-ITX or FM2A85X-ITX out of the box.

"Our NF-A15 and NF-A14 fans have been very well received by customers and hardware journalists alike", says Mag. Roland Mossig (Noctua CEO), "but we got many requests for a square frame PWM version for use as a case fan and on watercooling radiators. We can now meet this demand with the new NF-A14 PWM."

Introduced in late 2012, Noctua's NF-A15 and NF-A14 140mm fans have already received more than 50 awards and recommendations from leading international hardware websites and magazines. So far, only the round frame NF-A15 was available with PWM support for automatic speed control though. While the NF-A15's round frame is ideal for use on CPU heatsinks, the new NF-A14 PWM now combines PWM support with the A14's square frame that lends itself to use as a case fan or on watercooling radiators.

Like the NF-A14 FLX and ULN models, the new PWM version complies with Noctua's AAO (Advanced Acoustic Optimisation) standard and features sophisticated aerodynamic design measures such as Flow Acceleration Channels. Noctua's custom designed NE-FD1 PWM IC and reference class SSO2 bearings guarantee superb running smoothness and excellent long-term stability. Topped off with modular cabling, a Low-Noise Adaptor and 6 years manufacturer's warranty, the NF-A14 PWM is a premium choice for the highest demands.