Graphic Cards Crossfire without the need for the Crossfire edition master card

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According to our friends at HKEPC, they have successfully to decipher how the whole ATI Crossfire concept actually works. As a result, they are able to run two slaves cards in Crossfire without the need for the Crossfire edition master card. The amazing feat they have done was to run X700 and X300SE HM on Crossfire! However, this doesn't come easy at all as it took them a month to reverse engineered the BIOS and Catalyst drivers to make it work. This has proven one thing; Composition engine is only needed for proper image composition not for performance or Crossfire capability between two cards is determine through chipset and drivers.

Source: [RANK="www.hkepc.com/hwdb/atixfcracked-1.htm"]HKEPC [/RANK]

Article From : [RANK="www.vr-zone.com.sg/?i=2404"]VR- Zone[/RANK]
 
OMG Look at those numbers, cards in crossfire, are nearly double in performance :O .Going by the that logic dual x850 XT PE in crossfire would beat the new 7800gtx in SLI :eek:hyeah:
 
Well it'll double the performance with two cards but you'll only see half the rendered frames :|. There's nothing new abt it. This is taken from a hexus article thay appeared sometime back (jul 5 to be precise)....

Note the multi-VPU designation in the driver control panel. That's what shows up when you're running Crossfire in slave-slave mode. Slave-slave mode limits you to alternate frame rendering mode within Crossfire, as a means to speed up rendering, or SuperAA mode as a means to increase image quality. Supertiling and scissor are unavailable if you don't have the Xylinx FPGA to put the image back together.

In slave-slave AFR mode, you don't get the display output at any time from the second board, since there's no compositing chip to display it and the finished frame isn't sent over the PCI Express bus either. So while each board is rendering separate frames, half the frames are never displayed since the second board doesn't push them to the first. So you get inflated benchmark results without seeing all the frames on your screen.

The driver uses the marketing name Crossfire when you're running with a master board with the FPGA. So without giving much more of the game away, fancy a peek at the early performance the hardware had at Computex, using 3DMark05?
Click to expand...
http://www.hexus.net/content/reviews/review.php?dXJsX3Jldmlld19JRD0xMzUx
 
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