Windows 10: i5 a Bottleneck for GTX 1080 SLI? Solved

  1.    29 Mar 2017 #1

    i5 a Bottleneck for GTX 1080 SLI?


    I am thinking about picking up another 1080 in order to run them in SLI. The question I have is will my current i5 4690K be a bottleneck for two GTX 1080's running in SLI?

    CASE: CM Storm Stryker
    CPU: Intel i5 4690K 3.5GHz
    CPU Cooler: Cooler Master Hyper 212 EVO
    GPU: MSI GTX 1080
    MOBO: MSI Z97 Gaming 5
    MEMORY: G.SKILL Ripjaws X Series 16GB DDR3
    SSD 1: 240GB (OS/Programs)
    SSD 2: 120GB (Misc)
    SSD 3: 750GB (Games)
    PSU: EVGA SuperNOVA 750 B1, 80+ BRONZE 750W
    DISPLAY: VISIO 60" 4K LED HDTV
    NETWORK ADAPTER: TP-LINK Dual Band AC
    KEYBOARDS: Logitech G13/G610
    KEYBOARD TRAY: COUCHMASTER Lapboard
    MICE: Logitech G900/G700s/Razer Naga Epic Chroma
    MOUSE PAD: 2Cloud9 Genuine Leather Mouse Pad
    CONTROLLERS: Dual Shock 4/XBOX One Elite/Steam Controller
    HEADSET: Logitech G933 Artemis Spectrum Snow
      My ComputerSystem Spec

  2.    29 Mar 2017 #2

    No.....you'll be fine on that.

    The only issue you may have is with your current PSU. That MSI GPU draws 180 watts of power and the recommended minimum is a 500 watt PSU. So now you need to multiply that by 2 on the power draw which is 360 watts and then factor in all your other components. Use one of those online PSU calculators to confirm whether you will be OK or need a new PSU.
      My ComputerSystem Spec

  3.    29 Mar 2017 #3

    Thank you for your detailed response!
    With the amount of money I would be spending to by another 1080 as well as another power supply, I may as well buy a 1080ti.
    Thanks again for your response!
      My ComputerSystem Spec

  4.    29 Mar 2017 #4

    I'm not a big fan of SLI or Crossfire for GPU's......to much to factor in and to much to go wrong not to mention the cost factor. Although there are those out there that love it and swear by it, it's not my cup of tea.

    I like the logic of 1 GPU, either the Ti or Titian X .....if it's with in budget.
      My ComputerSystem Spec

  5.    29 Mar 2017 #5

    SLI can be very hit and miss and can cause a lot of issues. It would be more cost effective to sell your current 1080 and buy a 1080ti.
      My ComputerSystem Spec

  6.    29 Mar 2017 #6

    Plankton said: View Post
    I'm not a big fan of SLI or Crossfire for GPU's......to much to factor in and to much to go wrong not to mention the cost factor. Although there are those out there that love it and swear by it, it's not my cup of tea.

    I like the logic of 1 GPU, either the Ti or Titian X .....if it's with in budget.
    To play devil's advocate, I doubt that a single 1080ti or a Pascal Titan X would have the performance of two 1080s in SLI.

    (I also wonder whether the extra VRAM on the Titan X would be of much use unless you used a pair of them in SLI.)

    However, the specs on your PSU state that it only has 3 PCI-E power connectors. If the 1080s that you use each have 2, you'd have to fake it up with adapters (from the Molex connectors, probably) or buy a new PSU. I think that your PSU has enough capacity, but it's not oversupplied with PCI-E connectors.

    Personally, I've done SLI (and Crossfire). Heck, I did SLI back in the 3dfx days, when SLI meant Scan Line Interleaving. I'm not doing it now, and I may never do it again.
      My ComputerSystem Spec

  7.    30 Mar 2017 #7

    GPU's in SLI can look awesome in a high-end build and SLI 1080's will probably perform better than a single 1080ti, however, the performance boost will not be significant and certainly will not be cost effective.

    SLI can cause lots of issues such as Micro stutter.

    If you do decide to run SLI be sure to get an HB SLI bridge.
    Tested: The payoff in buying Nvidia's $40 SLI HB Bridge | PCWorld
      My ComputerSystem Spec

  8.    30 Mar 2017 #8

    BeK said: View Post
    I am thinking about picking up another 1080 in order to run them in SLI. The question I have is will my current i5 4690K be a bottleneck for two GTX 1080's running in SLI?

    CASE: CM Storm Stryker
    CPU: Intel i5 4690K 3.5GHz
    CPU Cooler: Cooler Master Hyper 212 EVO
    GPU: MSI GTX 1080
    MOBO: MSI Z97 Gaming 5
    MEMORY: G.SKILL Ripjaws X Series 16GB DDR3
    SSD 1: 240GB (OS/Programs)
    SSD 2: 120GB (Misc)
    SSD 3: 750GB (Games)
    PSU: EVGA SuperNOVA 750 B1, 80+ BRONZE 750W
    DISPLAY: VISIO 60" 4K LED HDTV
    NETWORK ADAPTER: TP-LINK Dual Band AC
    KEYBOARDS: Logitech G13/G610
    KEYBOARD TRAY: COUCHMASTER Lapboard
    MICE: Logitech G900/G700s/Razer Naga Epic Chroma
    MOUSE PAD: 2Cloud9 Genuine Leather Mouse Pad
    CONTROLLERS: Dual Shock 4/XBOX One Elite/Steam Controller
    HEADSET: Logitech G933 Artemis Spectrum Snow
    The theory says Bottleneck:

    Click image for larger version. 

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      My ComputerSystem Spec


 

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