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Thread: Getting a Vega 56 to run stable on a SF600 platinum

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    Default Getting a Vega 56 to run stable on a SF600 platinum

    As has been documented on this forum and elsewhere on the internet, the Vega series of graphics cards has some really high power spikes in certain situations.

    In 2018, I upgraded my trusty GTX 780 to a Vega 56. I had been powering this from a 450w Silverstone SFX PSU with an Intel i7-4770k. The GTX 780 had never caused the 450w unit problems, but the Vega 56 did.

    I then upgraded to the Silverstone SX650-G and continued to have shutdown issues in games. I originally thought this may be caused by my motherboard's OCP, but later deduced it was the PSU's OCP kicking in. Running the Vega in "power saver" mode prevents OCP shutdowns.

    Sure enough, Silverstone RMA'd my SX650-G stating they had made an engineering change to the product line for Vega power spikes.

    While waiting for my RMA to process, I purchased the SF600 platinum on Black Friday. I enjoyed the quiet fan on the SF600 platinum, and so chose to keep it instead of returning it when my SX650-G came back from RMA.

    Later, after selling the SX650-G, I started playing Destiny 2. Unfortunately, something about Destiny 2 is causing the OCP to trip on the SF600 platinum. Just like the first Silverstone unit, running the Vega in "power saver" mode prevents the shutdowns.

    Corsair Customer Service was unable to provide any insight, other than saying I need a minimum of 650w PSU for the Vega 56.

    At this point, I just bought a SF600 platinum and I don't have the funds to purchase the SF750 platinum. I've already sold the SX650-G and so I'm stuck with what I've got. Instead of gimping my Vega 56 (which I have installed an aftermarket Morpheus II cooler on that gives it plenty of cooling performance) in "power saver" mode, I'd like to experiment with undervolting to try to determine how to squeeze the most power out of it without triggering the OCP on my PSU. Does anyone have any suggestions as to a testing and evaluation strategy to find this point? I figure I can use Destiny 2 as my benchmark, as it is the only game I've played that has caused the OCP to trip on the SF600 platinum.

    Thanks!

    Full specs:
    Case: NCASE M1 mITX
    PSU: Corsair SF600 platinum
    Motherboard: Asus Impact VI mITX
    CPU: Intel i7-4770k (no OC)
    GPU: Vega 56 reference with Morpheus II cooler
    Storage: x2 SSD
    OS: Win10
    Last edited by smitty2k1; 02-05-2019 at 01:01 PM. Reason: added specs

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    Default

    Are you using one or two PCIe cables?

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    Default

    Quote Originally Posted by jonnyGURU View Post
    Are you using one or two PCIe cables?
    Using both PCIe cables. SF600 platinum only has a single 6+2 per cable and the Vega 56 won't post unless all 16 pins are plugged in.

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    Default

    Try to limit the current not in power saving.

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    Are you using chill feature? It has been written a few times it can cause problems with power supply.
    R7 1700x @3,95
    Geil EVO x 16gb ddr4 3200
    Asus Prime x370 pro
    Vega 64
    500GB Samsung 970 pro
    Corsair RM1000i
    EKWB watercooling (cpu+gpu)

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    I haven't experienced any problems with the combination of a Vega 56 and a SF450 Platinum. See here: https://translate.google.de/translat...ompatibilitaet

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    Quote Originally Posted by strumf666 View Post
    Are you using chill feature? It has been written a few times it can cause problems with power supply.
    Very interesting, yes I am using Chill. I'll have to try disabling it.

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    Unfortunately, turning off Chill did not work

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    RMA the SF600. You don't need 650W and you sure don't need an SF750.

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    Quote Originally Posted by jonnyGURU View Post
    RMA the SF600. You don't need 650W and you sure don't need an SF750.
    I tried RMAing it last month, but unfortunately for me Corsair wouldn't take it. See attachment.
    Attached Images Attached Images

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