DIAMOND Radeon HD 7970 3GB Double Black Diamond Video Card

Hot on the heels of the Radeon HD 7970 GHZ Edition launch, AMD announced price cuts to the Radeon HD 7000 series.  These price cuts were implemented to help make the standard 7970 competitive from a value standpoint against video cards using nVidia's GeForce GTX 670 and 680 GPUs.  However, price isn't the only major factor at hand.  Extra performance always helps with sales numbers, and before the 7970GE was released, many manufacturers took it into their own hands to provide a speed boost to the vanilla 7970 in the form of factory overclocking.  Today we're looking at such a video card from Diamond, who has traditionally offered graphics products with an emphasis on low price.  That video card in our test lab is Diamond's Radeon HD 3GB 7970 Double Black Diamond.  With core and memory clocks of 1025MHz and 1450MHz (5900MHz effective) respectively, we'll see how the Double Black Diamond stacks up to the competition.



Diamond Radeon HD 7970 3GB Double Black Diamond

  • Shader Units: 2048
  • ROPs: 32
  • Graphics Processor Unit: Tahiti XT
  • GPU Transistors: 4300M
  • Memory Bus Width: 384bit
  • GPU Clock: 1025MHz
  • Memory Clock: 1450MHz (5900MHz GDDR)
  • Physical Interface: PCI-E 16x (supports PCI-E 3.0)
  • Display Outputs: 2x mini DisplayPort, 1x HDMI, 1x dual-link DVI (DisplayPort, VGA and single-link DVI available through included adapters)
  • Video Card Length: 11.5"

A Closer Look at the Card

If this video card looks familiar to you, then you're right and you've probably seen it before.  Both of Diamond's 7970s, one stock clocked and the factory overclocked Double Black Diamond both use AMD's reference design for the Radeon HD 7970.  The only indication of the make and model of the subject video card come in the form of stickers: Diamond's logo on the shroud and the Double Black Diamond logo on the blower.  The sticker on the shroud does add a nice look to the plain black and red plastic reference design.

The side of the shroud on the Double Black Diamond card also matches the reference design.  Two PCIe power connectors, an eight and six pin are required for use.  This falls in line with AMD's PowerTune TDP limit of 250w for the Radeon HD 7970.