iXBT Labs - Computer Hardware in Detail






i3DSpeed, December 2009

ATI RADEON HD 5970 2x1024MB DDR5 (725/725/4000 MHz)

Andrey Vorobiev; January 4, 2010.

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


  • GPU: 2 x RADEON HD 5870 (Hemlock)
  • 2 x 1024 MB GDDR5 SDRAM in 16 Samsung chips on both sides; 1250 (5000) MHz peak clock rate
  • Interface: PCI-Express x16
  • GPU (ROPs/Shaders) clock rate: 725/725 MHz (nominal)
  • Memory clock rate, physical (effective): 1000 (4000) MHz (nominal)
  • Bus width: 2 x 256-bit
  • Vertex processors: -
  • Pixel processors: -
  • Unified processors: 2 x 1600
  • Texture processors: 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
  • VIVO: -
  • 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.

Graphics cards of this family are equipped with a built-in audio codec. So nothing else is required to transmit audio streams to HDMI (directly or via a DVI-to-HDMI adapter).

The card has two power connectors: 8-pin and 6-pin.

This card requires a DVI-to-D-Sub adapter to be connected to an analog monitor with a D-Sub interface. Also note that it 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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