120hz refresh through HDMI 2.0? - Scientist here, please help!

Discussion in 'Systems' started by jihro7, Jul 17, 2017.

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  1. TLDR: Title says it all. For reasons explained below, I can't use the USB-c to achieve a 120+hz refresh.

    Hello all,

    Scientist here with a kind of unique problem consulting you guys' knowledge and expertise. I recently purchased a Kaby Lake Razer Blade for work. We do some intensive atomic modeling/rendering stuff and are pretty reliant on Nvidia's 3D Vision for what we do (I know 3D Vision is kind of dead, but believe it or not, it's alive and well in our field.)

    For those unfamiliar with 3D Vision, its requirements are basically a 3D Vision-ready display (i.e. 120hz minimum; I'm using the 144hz Asus VG248QE), compatible GeForce graphics (GTX 1060 in the Blade is fine), and the 3D Vision hardware itself. We've run 3D Vision very successfully over the years using desktop setups.

    So here's the problem:

    Initially, to get the required 120hz refresh, I purchased a Thunderbolt 3 USB-c to DisplayPort cable to hook up the Blade to the monitor. While this netted me 120+hz, 3D Vision would not properly run as the USB-c apparently outputs from the integrated graphics...looking into this further, apparently this was a much-griped about problem back in ~2012 as Nvidia's 3D Vision drivers weren't developed to play well with Optimus technology, which many gaming grade laptops use. Even though the performance metrics are met, Nvidia's drivers won't even enable the 3D setup wizard as it only recognizes the integrated graphics, and doesn't think the machine has a compatible discrete. This means I have to look for my 120hz elsewhere, namely through the HDMI 2.0 port on the Blade, which outputs directly from the GTX 1060.

    I then purchased an HDMI to dual-link DVI converter (https://www.amazon.com/gp/product/B00B2HP9T2/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1). After hooking everything up with my dual-link DVI cable, 3D Vision indeed recognizes the GTX 1060 and is able to launch the setup wizard, but that's as far as I get. Under Display Settings, max refresh is still capped at 60hz, and 3D Vision obviously does not run at 60hz. From what I understand, HDMI 2.0 should have sufficient bandwidth to support 120hz @ 1080p, so I'm rather lost right now. I read something about many DVI adapters being passive single-link instead of actually dual-link as advertised...so maybe that's why...? (This is all new territory for me, so please drop knowledge on me.)

    So ladies and gents, has anyone achieved 120+hz through the HDMI 2.0 port? I've spent the last few hours reading through threads on both this forum and Tomshardware without finding very conclusive information. I just ordered an HDMI to DisplayPort cable to see if that will resolve the 60hz cap, but any feedback at this point would be greatly appreciated.

    Cables add up, scientific funding sucks these days, and I would much rather not have to purchase a Core (which I know will solve my issue.)

    Thanks for reading, and thanks in advance!
     
  2. Razer_Razor

    Razer_Razor New Member

    HDMI 2.0 support 120HZ,PD support 144,but Dvi seems to be only 60HZ.Using a converter can only use low efficiency rates.You'll have to experiment with yourself
     
  3. Hi there, thanks for the reply! However, I believe DVI dual-link is capable of outputting up to 144hz - I've used DVI successfully on desktop setups before.
     
  4. Razer_Razor

    Razer_Razor New Member

    sorry,I don't have DVI dual-link,so I haven't tried it.
     
  5. jaseow

    jaseow Active Member

    I am at 144hz 1080p using the HDMI 2.0 port on the blade.

    No DVI to complicate things though. Straight up HDMI to HDMI from laptop to monitor
     
    vistar likes this.
  6. Hi @jaseow, that's reassuring to hear! I'm assuming your monitor is HDMI 2.0 compatible, correct? I was hoping to stay with the VG248QE to save $$$, but if upgrading will solve my problem, I'm up for it.

    If you don't mind me asking, what monitor are you running?
     
  7. jaseow

    jaseow Active Member

    Yup the monitor has to be hdmi 2.0 compatible as well I believe.

    I am using an AOC Agon AG322FCX
     
  8. Great. I don't think you are, but are you by any chance using an "external adapter"? I sent a query to Razer asking about refresh rates through the Blade's HDMI 2.0 port, and they responded with this:

    "The HDMI 2.0 normally is only capable to produce 60Hz output. We've had previous users who used an external adapter to produce higher Hz."
    If anyone else wants to chime in with experience, real or theoretical, with refresh rates through the HDMI 2.0 port, whether HDMI to DP, DVI, or HDMI, I'd appreciate any and all input.
     
  9. jaseow

    jaseow Active Member

    Nope no adaptor. Straight up hdmi port on blade to hdmi port on monitor.

    I did use a usb-c to displayport cable before on an Asus MG279Q for 1440p@144hz
     
  10. Thanks for the clarification. I will give an HDMI 2.0 capable monitor a try then, as I can't use the USB-c for my purposes.

    Side note. I looked up the specs for the AG322FCX you were using...for some reason their site claims it only has HDMI 1.4 :confused_:...that's odd as you were able to get 144Hz
     
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