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ASUS Matrix Platinum 280x & Asus Top 2 CU 280x Crossfire Problems - Card not recognized in windows 7

Hello out there in Toms Hardware land.
Would like to thank you so much for the help before hand. Here is my set up and my problem

Mobo: MSI Z77 GD55
Ram: 1600 8MB Patriot
Cpu: Intel i5 3570K OC to 4.2GHz
GPU #1: Asus Matrix Platinum 280x
GPU #2: Asus Top 2 CU 280x
PSU #1: 700 Watt BlackStone
PSU #2: 430 Watt EVGA

(Power Supplies are daisy chained together via a ADD2PSU adapter so that they run together at the same time and turn off and on at the same time )

Widows 7 64 bit

I have ran each card by itself in the first PCI E slot and both cards work independently of each other.

My Mother board Manual specifically instructs me to connect BOTH CFR bridges during instillation and also during install of Drivers. ( using the latest AMD Drivers by the way 13.12) I feel that this is incorrect as everywhere I have seen people only use ONE CFR BRIDGE. However I did follow the instructions. I uninstalled all Vid Card drivers from the control panel as well as CCC. I also went to Device Manager and uninstalled the drivers and the card itself ( Asus Matrix Platinum 280x) With both Bridges connected to the GPU's I reinstalled the 13.12 AMD Drivers and then rebooted. When I open up CCC the option to enable CrossFire is not there. Also when I go to Device Manager I only see the GPU that is on the CPU (Intel HD 4000) and the Asus Matrix Platinum 280x) I DO NOT SEE the other Asus Top 2CU card.

I then went through the process again and uninstalled all Display drivers and left only the one FAR LEFT bridge in place and took the far right bridge off. I then reinstalled Drivers.... Still no option for crossfire or is it being detected ( 2 AMD Cards ) in the Device manager.

I don't k now what to do and am ready to stab myself in the face with a spoon a million times.

I'm about ready to wipe my hard drive clean and start from scratch... But I feel that is totally unnecessary .

Please help Community..... I'm a grown man about to drop a tear... UGH lol.

Here is a Picture of my System https://twitter.com/ChrisDima22/status/420590881008517122/photo/1
15 answers Last reply Best Answer
More about asus matrix platinum 280x asus top 280x crossfire problems card recognized windows
  1. I ran into a similar issue when attempting to crossfire an Asus DC2 HD 7850 in a client's machine with an Asus DC2 Top HD 7850 (the latter is the factory overclocked version).

    After RMA'ing the Asrock motherboard and speaking at length with (very unhelpful) Asus support, I figured out that Asus uses a BIOS in their factory overclock (Top) 7850 that is so foreign to AMD's reference that it does NOT crossfire with other 7850's.

    I flashed the DC2 Top BIOS to the DC2 card and they worked perfectly.
  2. quilciri said:
    I ran into a similar issue when attempting to crossfire an Asus DC2 HD 7850 in a client's machine with an Asus DC2T HD 7850 (the latter is the factory overclocked version).

    After RMA'ing the Asrock motherboard and speaking at length with (very unhelpful) Asus support, I figured out that Asus uses a BIOS in their factory overclock 7850 that is so foreign to AMD's reference that it does NOT crossfire with other 7850's.

    I flashed the DC2T BIOS to the DC2 card and they worked perfectly.



    Hey thanks for the reply quilciri..... So should I be doing all of this with only ONE CFR Bridge? Even though my MSI MOBO z77 GD55 Manual says to use 2 bridges?

    After reading my post ... is there anything you can think of step wise in my installation of the cards that I am missing? I mean they both ASUS 280X ..... yeah one is a Matrix Platinum and one is a DCT2, but shouldn't they crossfire with each other simply??

    So did you flash only one of your cards? And which one? And how did you know which bios to flash to? Did you flash to the Lesser Clocked card? Which do you think I should Flash... and did you get the Card Bios Drivers from the Amd Website or from Asus?

    My mobo should automatically identify Crossfire mode according to the manual.... This is ridiculous !!!

    Thanks again man... all help is sooooo welcomed!!!
  3. quilciri said:
    I ran into a similar issue when attempting to crossfire an Asus DC2 HD 7850 in a client's machine with an Asus DC2 Top HD 7850 (the latter is the factory overclocked version).

    After RMA'ing the Asrock motherboard and speaking at length with (very unhelpful) Asus support, I figured out that Asus uses a BIOS in their factory overclock (Top) 7850 that is so foreign to AMD's reference that it does NOT crossfire with other 7850's.

    I flashed the DC2 Top BIOS to the DC2 card and they worked perfectly.


    Think I should Flash the Matrix to the DC2T ? But the Matrix is the better card as it comes clocked at 1100 stock VS the 280x DC2T at 1050mhz core clock speed. ???
  4. You only need one crossfire bridge to crossfire 2 cards.

    I said I flashed the DC2 Top BIOS to the DC2, which means both cards now have the DC2 TOP BIOS.

    If you're having the same issue, then you just need to make sure both cards are running the same BIOS. Up to you which one that is. Your TOP will most likely accept the faster cards BIOS.
  5. Okay ... that makes total sense and I really do like the solution. I think that I will try to flash the Matrix Bios onto the DC2T Card.... I think that will help huge.

    Now I just need to figure how how to get a hold of that Matrix Bios to actually flash the Card. I'm at work right now so its a bit difficult to search around for it.

    And again...... Flashing the cards so that they are running the same bios..... Does that have anything to due with Windows 7 64 bit not seeing both cards in device manager? Again the Device manager only see the CPU GPU and the Matrix GPU.. ??

    Sorry broski.... really not trying to beat a dead horse... just trying to be thorough. :) :) :)

    Here is a Picture of my System... The box on the top of the case in the back is the second PSU https://twitter.com/ChrisDima22/status/420590881008517122/photo/1
  6. You already have the Matrix bios, it's on the other card. The flash tool does more than load a bios onto the card from disk, it can also save the bios from the card to disk. It's called backup and is essential so you reload the old bios back onto the card if the new one fails to work.
  7. MeowMeow said:
    Okay ... that makes total sense and I really do like the solution. I think that I will try to flash the Matrix Bios onto the DC2T Card.... I think that will help huge.

    Now I just need to figure how how to get a hold of that Matrix Bios to actually flash the Card. I'm at work right now so its a bit difficult to search around for it.

    And again...... Flashing the cards so that they are running the same bios..... Does that have anything to due with Windows 7 64 bit not seeing both cards in device manager? Again the Device manager only see the CPU GPU and the Matrix GPU.. ??

    Sorry broski.... really not trying to beat a dead horse... just trying to be thorough. :) :) :)


    Like pauls said, you can get the bios off the other card. I find it easier to download it from Asus's (or other repository's) site.

    AFAIK, nothing to do with windows. Both cards are recognized when installed by themselves, issue only occurs when attempting to crossfire. In my case, the Machine wasn't even making it all the way through post with both cards in - even though both cards worked perfectly by themselves in that case, too.
  8. quilciri said:
    MeowMeow said:
    Okay ... that makes total sense and I really do like the solution. I think that I will try to flash the Matrix Bios onto the DC2T Card.... I think that will help huge.

    Now I just need to figure how how to get a hold of that Matrix Bios to actually flash the Card. I'm at work right now so its a bit difficult to search around for it.

    And again...... Flashing the cards so that they are running the same bios..... Does that have anything to due with Windows 7 64 bit not seeing both cards in device manager? Again the Device manager only see the CPU GPU and the Matrix GPU.. ??

    Sorry broski.... really not trying to beat a dead horse... just trying to be thorough. :) :) :)


    Like Meow said, you can get the bios off the other card. I find it easier to download it from Asus's (or other repository's) site.

    AFAIK, nothing to do with windows. Both cards are recognized when installed by themselves, issue only occurs when attempting to crossfire. In my case, the Machine wasn't even making it all the way through post with both cards in - even though both cards worked perfectly by themselves in that case, too.


    I'm having problems finding the most Current Bios for the Asus Matrix Platinum 280x .... Could you please provide a link.... and as far as the DC2T... already being flashed with the Matrix Bios.... how is that possible man?
  9. You misread. He didn't say the matrix BIOS was on the DC2T , he said you already have the matrix BIOS because you have a matrix card. You can use the flashing util to copy the BIOS off the matrix card, then flash it to the DC2T.
  10. quilciri said:
    You misread. He didn't say the matrix BIOS was on the DC2T , he said you already have the matrix BIOS because you have a matrix card. You can use the flashing util to copy the BIOS off the matrix card, then flash it to the DC2T.


    Ahhhh Okay I understand. Is that utility located on the Driver CD that the card came with? Also to flash the DC2T card, will I need to take out the Matrix card and put the DC2T card in the #1 GPU Pci E slot where the Matrix is Currently seated, reboot and then Flash it from the CD Untility?

    *** remember.... windows is not recongnizing there being a card in the Other PCI E x8 Slot... so I have no way of seeing it when the Matrix is seated as well.

    Thx again man all this help is so awesome. I posted a pic of my rig as well in the OP
  11. Best answer
    GPU-Z, NVflash.

    You'll need to remove the TOP card; put in the matrix card, copy the bios; remove matrix card; insert TOP card, flash bios; reinsert matrix card; steal underpants; profits.
  12. quilciri said:
    GPU-Z, NVflash.

    You'll need to remove the TOP card; put in the matrix card, copy the bios; remove matrix card; insert TOP card, flash bios; reinsert matrix card; steal underpants; profits.


    Do you think that wiping the hard drive and reinstalling windows is a better option then Flashing the bios on the DC2T? then if that does not work ... then flashing the card?
  13. Like I've already said, i don't think the OS is your issue.
  14. quilciri said:
    Like I've already said, i don't think the OS is your issue.


    Very good man....... I can't wait to get home and start working on this.... I most def post to let you know how operation CrossFire Freedom went :)

    Thanks you so much for you time and wisdom dude !

    ~Chris
  15. Don't forget, backup the bios on BOTH cards before flashing to either card.
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