AMD ACC is a feature of the company’s 7-Series chipsets which uses a debugging backchannel going from the Southbridge to the processor to change certain CPU aspects, one of them being the “disable cores” feature on modern AMD CPUs. This allows you to play the AMD Casino, go get a cheap triple core, unlock its fourth core and hope it works (it usually does).

ASUS today launched the M4A89GTD PRO Series motherboard that delivers added core processing power by enabling the instant unlocking of latent AMD CPUs. Incorporating the latest AMD 890GX chipset with an advanced AMD graphics core, the M4A89GTD PRO Series also supports both ATI CrossFireX and Hybrid CrossFireX technologies. Combined with advanced rendering from the DX10.1 graphics API, the series offers spectacular visual output.

“By supporting both integrated and discrete graphics processing, the M4A89GTD PRO Series delivers enhanced graphics performance that will excite and impress both hardcore gamers and multimedia users,” said Joe Hsieh, General Manager of ASUS Motherboard Business.

ASUS seems to be ready with one of its first motherboards based on the AMD 890GX chipset. This socket AM3 series of motherboards seems to come in two variants: M4A89GTD Pro and M4A89GTD Pro USB3 (with the latter having support for USB 3.0 SuperSpeed connectivity. An early development version of this motherboard was displayed at this year’s CES event. Fresh pictures show a production-grade model, complete with chipset and VRM cooling, as well as a box design.

The M4A89GTD Pro / USB3 is a socket AM3 motherboard with a 10-phase CPU VRM supporting future AMD CPUs with 140W TDP, 2-phase memory VRM powering the four DDR3 DIMM slots, AMD 890GX chipset with faster DirectX 10.1 compliant graphics, and AMD SB800 southbridge. The SB800 provides six SATA 6 Gb/s ports, while an additional JMicron-made controller gives out the IDE connector (and possibly the lone eSATA port). Expansion slots include two PCI-E 2.0 x16 slots (x8/x8 when both are populated), two PCI, and one each of PCI-E x1 and PCI-E x4. Connectivity includes 8+2 channel HD audio with optical SPDIF output, gigabit Ethernet, USB 3.0 ports (on the USB3 variant), FireWire, and display connectivity including DVI, D-Sub, and HDMI. The M4A89GTD Pro / USB3 is expected to be launched a little ahead of AMD’s launch of its six-core Phenom II X6 processors.

Source: Teknofrikik