AMD partner VTX3D (also known as Vertex3D) released three new Radeon HD 7000 graphics cards this week. All three cards are of the 'X-Edition' type, which suggests that they come overclocked. The fastest model is based on the Radeon HD 7870, has a core clock frequency of 1100 MHz and an effective memory speed of 4900 MHz for its 2 GB of GDDR5. This card features an alternative cooler with a number of copper heatpipes and has 2x Mini DisplayPort, 1x HDMI and 2x DVI video outputs.
The Radeon HD 7850 X-Edition is available in two versions, one with 1 GB of memory, the other with 2 GB. Apparently VTX3D doesn't consider 2 GB of memory a necessity, despite the amount being part of AMD's standard specifications for the card. These two models each have an 860 MHz core clock, identical to a reference HD 7850. The memory also runs at its stock speed of 4800 MHz effectively. In terms of hardware, the two HD 7850 cards seem identical to the more luxurious HD 7870 X-Edition, the cooler and video outputs are also identical.
The last X-Edition card is based on the Radeon HD 7770, meaning it has only 640 stream processors and a 128-bit memory interface. This card has 1 GB of GDDR5 memory and a heatsink with a bright red plastic cover. The small 'Cape Verde' GPU of the card has been overclocked from 1 to 1.15 GHz. The memory has been elevated to 5000 Mhz effectively. This card has one less DVI output than the other cards.
VTX3D Radeon HD 7870 X-Edition
VTX3D Radeon HD 7850 X-Edition
VTX3D Radeon HD 7770 X-Edition