CrossfireX 2x 4890 1x 4870? Tags: Graphics Cards Computer Graphics Last response: July 18, 2009 12:00 AM in Graphics & Displays Share ragrim July 17, 2009 5:30:55 AM Ok ive been to about 5 forums so far and no one has been able to answer my question, can i run 2x 4890's and 1x 4870 in crossfirex ? i dont care if its pointless or whatever, i just want to know if it works, cause i added a 4870 to my 2x 4890's and my computer just doesnt recognize it, i have a GA-EX58 extreme if it matters. Thanks. More about : crossfirex 4890 4870 xc0mmiex July 17, 2009 5:47:21 AM http://game.amd.com/us-en/content/images/crossfirex/CF_... hmmm, just realized that chart doesnt help lol, woops test if a various combination of the cards work, like 4890 and 4870 together... etc.. Dekasav July 17, 2009 6:04:38 AM If the computer doesn't recognize it, I'd call it a lost cause. Related resources Will Radeon 4870/4890 bottleneck in GIGABYTE GA-G31M-ES2C (rev. 1.x) ? - Forum 2x Radeon HD 4830 CF VS 1x Radeon HD 4870 1GB - Forum CrossFireX not working on 2x 4870 in Win7 - Forum 2x 4850 vs 4870 vs 4890 vs gtx275 vs gtx 285 - Forum 4870 x2 or 2x 4890? - Forum Can't find your answer ? Ask ! Get the answer redgarl July 17, 2009 6:21:50 AM Go check in the windows device manager and install the drivers manually. If the card is disabled, enable it and it should work... In the worst scenario, try the 4870 alone, install it, and get back to your old setup. ragrim July 17, 2009 1:17:58 PM i finally got it working, the bottom card wasnt fully plugged in cause the back plate was stopping the card going all the way in, so i took the back plate off and squeezed it in. results.... adding a 4870 to my 2x 4890 scored an extra 2000 points in 3d mark 06 and an extra 2500 in 3d mark vantage chef7734 July 17, 2009 8:16:43 PM When you install the 4870 in a crossfire setup the 2 4890's downclock to 2870's specs. You will see a peformance boost but it is basically like 3 4870's. ragrim July 18, 2009 12:00:23 AM i havnt had a chance to test any games just yet but ill be doing some in depth testing to see how benificil it actually is, i know 3dmark is just synthetic and it doesnt show real world performance Can't find your answer ? Ask ! Publish Related resources Solved1x 200mm fan or 2x 140mm Forum SolvedASUS Strix 970: 2x 6-pin pci-e to 1x 8-pin pci-e Forum Solved2x 2gb + 1x 4gb on Dual Channel Forum Solved1x 256GB SSD or 2x 128GB SSD? Forum Solved2x 1TB or 1x 2TB Drive? Forum SolvedIs there a reason to purchase a 2x 4gb ram kit compared to a 1x 8gb ram kit? Forum SolvedMy gpu came with 2x cables which were 2x6pin going into 1x 8 pin. In the manual it showed that I could either do that or use Forum SolvedI need help with 2x 6-pin and 1x 6-pin + 1x 8-pin Forum SolvedAny Z97 motherboards with 2x PCI x8 and 1x PCI x4 running at the same time Forum SolvedR9 280X with 1x 8 PIN PCI-E and 1x 6 PIN PCI-E (Only have 2x 6 Pin PCI-E) Forum Solved2x 360 rads vs 1x 360 rad and 1x 240 rad for crossfire 290's? Forum SolvedSapphire Vapor-x 290 needs 2x 8 pins. I have 1x 8 and 1x 6+2 pin Forum Solved2x Nvidia Geforce GTX760 or 1x Nvidia Geforce GTX780? Also what storage and what power supply for my build? Forum Solved2x Nvidia Geforce GTX760 or 1x Nvidia Geforce GTX780? Also what storage and what power supply for my build? Forum SolvedGaming PC build, MSI GTX 780ti 2x SLI setup or 1x MSI GTX Titan black? Forum More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !