BenQ XL2411T 120hz problem

Hey I have the AMD Radeon 6900 graphics card and I recently bought a brand new benQ XL2411T monitor.

Unfortunately I can't manage to get it to 120hz whilst on 1920x1080, when I attempt to change it via the windows settings it's capped at 60hz and whenever I try to change it via the AMD Vision Engine control center it won't allow 120hz unless I'm at a resolution cap of 1024x768 or below.

I've attempted rivatuner but it quite simply won't allow the change, please help with any information you can... thanks!
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More about benq xl2411t 120hz problem
  1. Are you using a dual-link DVI cable (which is connected to a dual-link port on the GPU) or Displayport cable? Those are the two mediums that have the bandwidth for 120hz 1080p.

    That would be why I think.
  2. I definitely have the dual-link DVI cable connected, it's the one which came with the monitor and I was precedingly cautious upon the matter. The graphics card mentioned only has one port, so that can't be the problem... ]:
  3. Which card is it? Exact model if possible.

    hmm, not too sure actually. Kinda stumped on this I will admit.
  4. Is this a laptop? Though I cant think of any reason why it wouldn't work, I don't know if it would.
    That being said, I don't think that laptop graphics are even going to be able to take advantage of 120hz in gaming.
  5. It's a desktop computer, here's a list of all the hardware:

    Operating System
    Microsoft Windows 7 Ultimate 64-bit
    AMD FX-8120 25 °C
    Zambezi 32nm Technology
    8.00 GB Dual-Channel DDR3 @ 710MHz (9-9-9-24)
    BenQ XL2411T (1920x1080@60Hz)
    AMD Radeon HD 6900 Series (Sapphire/PCPartner)
    Hard Drives
    932GB SAMSUNG HD103SJ ATA Device (SATA) 34 °C
    Optical Drives
    DTSOFT Virtual CdRom Device
    ATAPI iHAS124 B ATA Device
    Realtek High Definition Audio
  6. So I'm guessing you have a Sapphire HD6950 or 6970, the link you gave above is a mobile card designed for laptops.
    You sure that you have connected to the dual DVI cable connected o the right port?
    It should be on a port with the extra pins, as seen on the lighter colored port on this card.
  7. Yeah it's definitely plugged in correctly >_<
  8. Here are some screenshots to possibly aid your help:

    Not being able to go above 60hz -
    Being capped at 1024x768 when selecting 120hz in the control center -

    Whenever I play any game with that horrendous resolution it tends to reset itself back to 60hz too.
  9. Hi,

    I also have a 6900 card myself and it is an asus. On mine there is a switch on the graphics card which turns one display port of to switch the DVI from single link to dual link.

    Both the DVI outputs are DVI-I but i think only one is truely DVI-I (dual link).

    I have linked my specific graphics card and the picture that demonstrates where the switch is.

    The switch is circled in red.

    I made an account just to answer this question xD

    EDIT: DVI-D (dual link) will run from DVI-I (dual link) no problem
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