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Sapphire Pure Crossfire A9RD480 There was something we meant to say .. but we forgot
(Review by MS, Dec 22 2005)

We already mentioned the integrated SATA (1.5) controller on the SouthBridge level. SATA II extensions are not supported by the SB450, therefore, another SiliconImage controller, namely the SiI 3132 is used to add two SATA II (3.0) ports with 3 Gbit bandwidth per channel. Likewise, in absence of a high-end network controller, the Marvell 88E805 Gigabit Ethernet controller takes over by tapping into one of the 1x PCIe lanes. IEEE 1394 firewire is provided by VIA's VT6307 IEEE1394 controller.

Audio

The ATI SB450 integrates a 7.1 HD sound controller, which in this case, is enabled through either the S/PDIF interface or, for the analog user, through the Realtek ALC880 CODEC. The ALC880 7.1 Channel High Definition Audio CODEC with UAA (Universal Audio Architecture), features four 24-bit two-channel DACs and three stereo 20-bit ADCs and incorporates proprietary converter technology to achieve 100dB sound quality.

The ALC880 provides 7.1 output channels, along with flexible mixing, mute, and fine gain control functions to provide a complete integrated audio solution for PCs. The DACs (with a highest sampling frequency of 192kHz) and Realtek proprietary hardware content protection are applicable for DVD-Audio, previously only implemented in high-end consumer electronics. The ALC 880 also integrates three stereo ADCs with possible support of e.g. a microphone array with Acoustic Echo Cancellation (AEC), Beam Forming (BF), and Noise Suppression (NS) technology simultaneously. With this unique feature (3 stereo ADCs), the ALC880(D) can provide high-quality audio using S/PDIF to output analog data, or for multiple-source recording applications.