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  1. #1
    ROG Member Array
    Join Date
    Feb 2015

    GR8 and nVidia Optimus question

    I just picked up a new GR8 last week, and had some issues getting some of my Steam games (Skyrim, mainly), to recognize the main GPU (GTX 750Ti), and every time I disabled the onboard graphics (HD4400), the display crapped out altogether. This behaviour leads me to believe that the GR8 has some sort of hybrid software set up like Optimus handling the two GPUs collectively for best performance, but as far as I knew, desktop GPUs are not supported by Optimus, just the M series mobile GPUs.

    So, can anyone else verify for me if my belief is correct and I'm dealing with an Optimus based system?

  2. #2
    ROG Enthusiast Array
    Join Date
    Dec 2014

    Everything I've seen on the GR8 makes me think it's pretty much a laptop config. The review I link below says 3DMark picked up the card as an 860M. The processor specs also look like it's a mobile i7. So I think you're probably correct.

    It looks like a cool little system, how do you like it so far? I saw a video on PCDIY's youtube channel (the 45 min video on the GR8) where they take it apart and it looks a lot easier to open than the G20, though of course more limited in what you can replace. They did show off an internal USB port that can accept a USB thumb drive and keep it hidden inside. Interesting feature, I wonder if that has its basis in being a Steam OS PC originally.

  3. #3
    Helium Chilled Array _ PC Specs
    _ PC Specs
    Laptop (Model)G46VW
    MotherboardRampage IV Gene
    ProcessorIntel Core i7-3930K
    Memory (part number)Corsair Dominator Platinum 32GB (CMD32GX3M4A2133C9)
    Graphics Card #1ROG Matrix GTX 780 Ti
    Sound CardROG SupremeFX III
    MonitorASUS VG248QE with GSync mod
    Storage #1Plextor PX-M2 SSD 120GB
    Storage #2G.Skill Phoenix Blade 480GB PCIe SSD
    CPU CoolerCooler Master Seidon 240M
    CaseCooler Master HAF-X
    Power SupplySeasonic X-750
    Keyboard Corsair K90
    Mouse ROG Gladius
    Headset ROG Orion
    OS Windows 8.1 Update 1
    Network RouterASUS RT-AC66U
    _'s Avatar
    Join Date
    Dec 2011

    It is an Optimus system, yes. The 860M and 750 Ti are the same GPU cores. It uses notebook components to meet the strict thermal requirements of the tiny device.

  4. #4
    ROG Member Array
    Join Date
    Feb 2015

    It looks like a cool little system, how do you like it so far?
    Honestly? On day 2 of ownership, a simple ALT-TAB out of a game to the desktop killed my video to a black screen. Reboot and/or restart didn't fix it, and neither did a trip to Safe Mode to play around with disabling/enabling the video drivers, so I was ultimately forced to rebuild it from scratch via the rescue partition. Day 3 was Windows updates, re-installing all my apps, etc. and that's where I found out that Skyrim wouldn't recognize either video card and was using the Microsoft Render, for a whopping 1-2 fps, making the game unplayable. After multiple disable/enable trials to see if I could get the game to register the right card(s), plus some playing around in the nVidia control panel to set preference through that, with no success, I rebuilt it again from scratch because Skyrim had actually worked on day one. Day five was spent reinstalling Windows updates for the third time, and on the third and last update cycle, one of the updates was a fresh driver for the Intel HD GPU and that update killed the PC dead. Now I have a black screen, without even any BIOS text, and I can't get into Safe Mode or the recovery partition.

    So, the reality is that it's packed up and getting returned tonight because this particular machine is effectively a beautiful looking brick at the moment. I am 100% in the market for this type of device, but ...
    Last edited by Thruxomatic; 02-10-2015 at 08:16 PM.

  5. #5
    ROG Guru: Black Belt Array toronto699 PC Specs
    toronto699 PC Specs
    Laptop (Model)G752-VY-DH78K , G751-JYDH72X
    MotherboardRog Tytan G30AB
    Memory (part number)32GB
    Graphics Card #1Asus Gold20th GTX980Ti
    Sound CardDell X-Fi Audigy SoundBlaster
    Monitor3 Acer K272HL
    Storage #1118 GB/OS
    Storage #22.72 TB
    CPU CoolerIntegrated Liquid-Cooled CPU
    Power SupplyAsus 700 Watt
    Keyboard Razer BlackWidow Ultimate
    Mouse Razer Diamond Back
    Headset Sony Studio Professional , Razer Seiren Mic
    Mouse Pad Razer FireFly
    Headset/Speakers Logittech 5.1 Z-5500
    OS W 10
    Network RouterSagemon Fast 5250 Hub 2000

    Join Date
    Aug 2014

    optimus think asus would lean how awful it is so many problems optimus is useless technology

  6. #6
    ROG Member Array
    Join Date
    Feb 2015

    Optimus kind of has a place in keeping power consumption and heat down for non-straining tasks in a PC, but we're talking about a PC with one of the most efficient chips on the planet (i7-4510U @ 15W) and a pretty efficient GPU in the GTX860M @ 45W, already. The whole PC runs on a 120W power brick, even at full bore. If the idle consumption and heat generation of the GPU is high enough with the GTX860M that there's a need to opt for a GPU running at 22W instead of 45W for those tasks when the GPU is loafing, then this case needs more airflow, not a weaker GPU to ease down temperatures.

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