Razer Core 2M Thunderbolt Cable

Discussion in 'Systems' started by TyMcLean, Sep 19, 2016.

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  1. TyMcLean

    TyMcLean Active Member

    Hey guys and gals!
    So I just got a 2 meter Passive Thunderbolt cable over the weekend. I've started running some synthetic benchmarks and I'll be running some games later today and tomorrow to check the real world functionality of having a longer TB3 cable so I can have a better desk setup than the original cable provides.
    So far the results are better than I was expecting, and I'm super excited!
    I'm not sure if anyone else has tried this, so hopefully it's another first for me! I'll update this thread and answer any questions I can while I'm going through this process.
    Thanks guys!
  2. Katana_x_II7

    Katana_x_II7 Well-Known Member

    I head all the longer TB3 cables only can handle 20mb/s instead of 40mb/s like the one the core comes with. is that true in your tests? or did you find a longer one that can handle 40mb/s?
  3. Vaypron

    Vaypron Well-Known Member

    MB/s? Are we back in 2005? o_O
  4. TyMcLean

    TyMcLean Active Member

    So the cable that comes with the Core is an Active Thunderbolt 3 cable which is capable of 40Gbps(5GBps). The passive cable I now have is only capable of 20Gbps(2.5GBps).
    So far it's not looking like much of a hit to the benchmarks. Granted those are synthetic, and not real world gameplay. I'll have those later tonight and tomorrow.
    What most people were confused about was the bandwidth of the TB3 cable. I've been looking through documentation on Intel's site, and when most people think of TB3, they only think of the 40Gbps. Well Intel's website shows that there are two "pipelines" in the TB3 cable, each capable of 40Gbps. It's more like a highway in the way it works, where each "pipeline" is one way. I'm still working on things, but this passive cable seems to be working fine.
    Here's a picture from Intel's site:

    Attached Files:

  5. roydliu

    roydliu New Member

    Thanks for doing this - was really curious and am dying for a longer cable. Please let us know once you have some real world benchmarks in a few games.
  6. Hmm... I thought the core wouldn't even operate with a longer cable installed... Idk I think I just saw that somewhere on youtube, somebody tested it with a longer cable without success.
  7. mdaly001

    mdaly001 Active Member

    Very interested in real life benchmarks
  8. Katana_x_II7

    Katana_x_II7 Well-Known Member

    Oh I meant Gb haha. my bad! idk why i did an "m" instead of "g".
  9. Vaypron

    Vaypron Well-Known Member

    It's ok! I mean it's just the factor 1k. What should go wrong? :stuck_out_tongue_winking_eye:
  10. Katana_x_II7

    Katana_x_II7 Well-Known Member

    This is awesome. Very nice informative picture from intel. I was unaware it was 40Gb/s each way! Thanks for the info!
  11. vampirivan

    vampirivan Well-Known Member

    Benchmark please! Work for us great man!!! We are all' curious!
  12. Yousif47

    Yousif47 Active Member

  13. TyMcLean

    TyMcLean Active Member

    Alrighty guys and gals.
    So I'm piecing together a video with all of the results, but for now I will say, I've changed my desk setup with the 2 meter Thunderbolt 3 cable. Now my core sits to the right of my Razer Blade Stealth!
    mosaicman and Yousif47 like this.
  14. mosaicman_no_id

    mosaicman_no_id New Member

    Looking forward to your video and findings! :)
  15. Sidedoor

    Sidedoor Member

    keen to see your results as well mate
  16. I too have done some testing/work with a 2M TB3 20Gbps cable on the Core.

    Specifically this one: https://www.amazon.com/gp/product/B01AS8U9KE

    My findings thus far:

    Connecting the Core with the 2M 20Gbps cable seems to work the same with Windows 10 on my 7th Gen Razer Blade Stealth (QHD 512GB) as the 0.5M 40Gbps.

    [All my tests are NOT using an external monitor connected to the GPU/Core.]

    Booting fresh and rebooting with it connected leads me to login screen where my keyboard does not respond for a few seconds until the screen flashes and I hear the connection sound from Windows. I can then login and it shows the GPU (GTX 970) as connected.

    Disconnecting the GPU from the taskbar icon/helper flashes the screen, and make the Windows hardware disconnect sound. I can then disconnect the cable to the Core normally. Re-connecting the Core does not activate the GPU on the first try. I have to connect the TB3 2M 20Gbps cable once and I get the normal connection sound, but no screen flash and it does not see the GPU. I then pull the cable and re-connect it after clicking the `Connect GPU` in the taskbar helper and I get a screen flash and it re-connects fine.

    For testing I ran the Deus Ex Mankind Divided benchmark and doing 2 passes each:

    0.5M 40Gbps cable: 36 average FPS
    2M 20Gbps cable: 35.4 average FPS

    I am also running Wolfenstein New Order and it runs 60FPS consistently without any interruptions/stutters. (Playing up to 2hrs.)

    Based on my findings there doesn't seem to be enough of a bottle-neck in the cable to affect my limited gameplay, or to create odd behavior with the connection at all.

    I have a limited understanding of how necessary the higher transfer rates of the cable are, and to what behaviors specifically using a 20Gbps cable may induce. These are just my personal findings with my specific equipment.
    mosaicman likes this.
  17. Thats great to hear, thanks Lexell!

    Limitations of bandwidth due to the cable likely has a lot to do with the resolution you game at, because resolution determines how much 'information' you need to send back and forth.

    Given you are using a 970, I assume you are not gaming at full screen res. Are you using a resolution in the range of 1920 x 1080?? Or full QHD (2560 x 1440)?

    I have a Razer Core with a Titan X installed and am able to game at full 4K... most titles run over 60 fps with full eye candy. I have a Thunderbolt 3 2 m cable on order... so I'm interested in the top end limit..

  18. Ah, that is a great question.

    I am running pretty much everything at 1920x1080 full screen.
    mosaicman likes this.
  19. Hi all,

    I've got a 2016 Razer Blade and my core has a Titan X (Maxwell).. I picked up the 2m Startech TB3 cable. Using the laptop display, I've only noticed a 1-3 fps loss in games, (Rise of the Tomb Raider, The Witcher 3, Battleborn etc).

    Looks like the longer cable is completely functional!
    mosaicman likes this.
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