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Intel HD 3000 GPU question

By Schmutz
Feb 23, 2012
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  1. using 2600K with Intel HD3000 integrated GPU and ASROCK EXTREME4 Motherboard

    - also using 2x nvidia GTX 560ti GPU

    PROBLEM:

    When I connect a display to the motherboards DVI/HDMI port the intel HD3000 GPU seems to take "priority". Games will run sluggish like the 560ti GPU's are not being used at all. I realise that I could use another port in my GPUs but that is not relevant to my question.

    Is it possible to use the motherboards DVI/HDMI port and also utilise the GPUs or will they always be disabled in this case?

    I expect the solution might be something simple but I haven't found it. Latest GPU/Lucid Virtu drivers.
     
  2. slh28

    slh28 TechSpot Paladin Posts: 1,925   +170

    Why would you want to do this anyway? Do your GPUs not have the DVI/HDMI connections you want?
     
  3. mailpup

    mailpup TS Special Forces Posts: 8,506   +237

    You can only use the GPU you are connected to. So if you connect your monitor to the 560ti connector, that's the output you will see and similarly if you connect to the motherboard's built in video connector, you will get the onboard (HD3000) graphics output.
     
  4. Buckshot420

    Buckshot420 TS Enthusiast Posts: 467

    I think he's referring to Virtu. You can utilize the igpu for encoding which will be much faster than a discrete card. You do want to use the video output from your mobo but you need to go into your BIOS and enable Virtu. When you open a game up your 560 will kick in. Also make sure the Virtu control panel is installed first.
     
  5. Schmutz

    Schmutz TS Rookie Topic Starter Posts: 241

    That is interesting Buckshot but I do not believe that the 560's horsepower can be utilised like you have said (routed through the integrated GPU) - even after enabling Virtu in the BIOS. I have just received the following statement on another forum where I have asked the same question:

    "One of the features of the Z68 chipset is that you can run multiple moniters from both the IGP (Integrated Graphics on Processor) and the dedicated video card. With a board like the Intel® DZ68BD I can have 3 moniters+ running from two off the dedicated card and one from the IGP/board. So you want to take advantage of the 560ti you need to have the monitor plugged into that port. With LucidLogix Virtu software it can switch between the IGP and dedicated but always being routed through the dedicated card. I hope that this answers your questions. "

    My understanding;

    the IGP performance CAN be routed through the 560ti/discrete GPU

    the 560ti performance CAN'T be routed through the IGP

    Is this correct?
     
  6. Buckshot420

    Buckshot420 TS Enthusiast Posts: 467

    So how is virtu used on a single monitor?
     
  7. Schmutz

    Schmutz TS Rookie Topic Starter Posts: 241

    The conventional way:

    CPU --> IGP --> MOBO --> Monitor

    But you only get the IGP performance. GPU horsepower will not be utilized

    that's my understanding. Sorry if there is a contradiction in there somewhere that I have overlooked, I'm the guy asking questions though haha. It would be ideal if I can connect a monitor to the motherboard and get performance from my GPU (routed through the IGP) but it doesn't seem possible.
     
  8. fimbles

    fimbles TS Evangelist Posts: 1,282   +157

    I have a feature in my mobo that allows this (hybrid sli, m3nht deluxe) Im Plugged in to integrated gpu socket, the system will switch from intergrated gpu to aftermarket gpus depending upon the horsepower required, There is a small drop in performance though. and a big saving in power consumption.
     
  9. Buckshot420

    Buckshot420 TS Enthusiast Posts: 467

    As I understand it, you can. There are 2 modes in virtu, i-Mode (display connected to integrated GPU output) and d-Mode (display connected to discrete GPU output). Now as far as them working, probably not....

    KNOWN VIRTU ISSUES

    i-mode
    -FRAPS may cause instability of some 3D benchmarks, even when applied without Virtu solution. DO NOT run benchmarks with FRAPS
    -3DMark Vantage may crash with FRAPS
    -HAWX benchmark may suffer from micro-stuttering when FRAPS is on
    -Virtu control panel may show some artifacts when system’s desktop background is configured to Windows Classic theme.
    -When Dual GPU optimization (SLI/Crossfire) is enabled, performance may stay unaffected.

    d-Mode (display connected to discrete GPU output)
    -If two discrete GPU are installed, but SLI/Crossfire is not enabled, then transcoding will not use Intel QuickSync

    All issues mentioned above will be fixed in next releases.

    As im sure you already know, the purpose of using the iGPU alongside the dGPU in Virtu is primarily to take advantage of the iGPU's strengths: QuickSync (Intel's blazing fast hardware H.264 encoder), and lower desktop power usage. For rendering, games, etc, the iGPU isn't doing anything else for you.
     


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