On the example of Gigabyte RADEON HD 5970 2x1024MB DDR5 (725/725/4000 MHz).

Price: Newegg, Amazon.

Features:

• GPU: 2 x RADEON HD 5870 (Hemlock)
• Memory: 2 x 1024MB GDDR5 SDRAM in 16 Samsung chips on both sides of the PCB; 1250 (5000) MHz peak clock rate
• Interface: PCIe x16
• GPU clock rate (ROPs/Shaders): 725/725 MHz (standard)
• Memory clock rate, physical (effective): 1000 (4000) MHz (standard)
• Bus width: 2 x 256-bit
• Stream processors: 2 x 1600
• TMUs: 2 x 80 (BLF/TLF)
• ROPs: 2 x 32
• Size: 305x100x33 mm
• PCB color: black
• RAMDACs/TDMS: integrated into GPU
• Outputs: 2 x DVI (Dual-Link/HDMI), HDMI
• Multi-GPU: Hardware CrossFire

Essentially, this is a couple of 5850 cards on a single PCB.

Note that the PCB length is 305mm. Also note the housing width -- a motherboard must have enough space behind the PCI-E x16 slot and the adjacent slot as well.

This card features its own audio codec, so nothing else is required to output audio to HDMI.

This card has one 8-pin and one 6-pin power connectors.

This card can work with three monitors simultaneously.

Maximum resolutions and frequencies:

• 240 Hz maximum refresh rate
• 2048 x 1536 x 32bit @ 85Hz Max - analog interface
• 2560 x 1600 @ 60Hz Max - digital interface (all Dual-Link DVIs)

The HDTV review is available here.

We thank Gigabyte for the provided graphics card.

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