[CPU + GPU Temperatures + Benchmarks] - XPS 15 [9560] Kaby Lake

Discussion in 'Dell XPS and Studio XPS' started by iunlock, Mar 10, 2017.

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Which configuration do you have? (Select 3x)

  1. i7-7700HQ

    87.7%
  2. i5-7300HQ

    12.3%
  3. i3-7100H

    0 vote(s)
    0.0%
  4. 4K UHD

    57.9%
  5. 1080p FHD

    36.8%
  6. 56WHr

    14.0%
  7. 97WHr

    75.4%
Multiple votes are allowed.
  1. GoNz0

    GoNz0 Laptop Engineer & Online games hosting.

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    It keeps the voltage then?
    I use it on my games PC to overclock the hell out the video card but it's primarily open to control the GPU water cooler fan speeds via PWM as the temps sit so low the vBIOS want's to shut it down. Turning it off obviously stops the custom fan profile.

    It would be nice if we could mod the vBIOS like standalone cards!
     
  2. djkanoko

    djkanoko Notebook Enthusiast

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    Has anyone done any power efficiency testing of the various CPU and GPU throttling mechanisms on the XPS 9560 in regards to gaming?

    I'm looking to maximize the FPS per Watt while gaming and am curious how these settings affect this:

    nVidia cPanel & Inspector throttling settings
    Windows CPU and PCI throttling settings
    Dell Power Manager throttling settings
    XTU??
    Afterburner??

    My assumption is that some power throttling will help as it reduces power consumption during less computational intensive periods, but that maximized throttling might do worse because too much time and energy is wasted switching between power states.

    Also I always use v-sync, so I assume I'd also want to reduce the clock and/or increase throttling until the GPU is stably generating frames just slightly above the refresh rate (60-70fps). Otherwise the GPU will waste energy waiting to generate new frames while at a higher clock speed.
     
  3. infernix

    infernix Notebook Enthusiast

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    So I have the same issue with Pwr showing up, but my ambient readings are way way lower. You fixed this entirely by getting more cooling on VRMs?
     
  4. infernix

    infernix Notebook Enthusiast

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    To answer myself, yes, it's 100% a temperature issue. I took a blow dryer on cool and held it against the entire VRM section and the GPU happily runs at 1.7GHZ the entire time during Unigine Valley; 5 seconds after I stop cooling the VRM area, Power limit throttling kicks in.

    Now just need to figure out which ones are the culprit for GPU.

    Edit: So I did some testing and i'm 99% sure it's the VRAM overheating that causes this.

    I have an IR gun and when I put a blow dryer on cold air up against the VRAM for a minute or two, GPU will happily run at 1.7GHz and the Performance Limit in HWiNFO jumps to "reliability voltage" - which I understand to be the max voltage it gives the gpu to run at max clock.

    Every single Ambient sensor onder DELL in HWiNFO drops below 45c but still gpu does power limit throttling, but the moment i put the fan on the VRAM (specifically the ones closest to the back of the chassis) ambient temps do not matter - it'll stop power throttling. Ambient temps can go up to 50+ and it still happily runs the GPU at max clock.

    So question is what to do, if anything. the stock thermal pads make good contact because the heatsink above the hottest vram chip (below the QR sticker) gets up to 60C easily.

    Any ideas?
     
    Last edited: Sep 13, 2017
  5. pressing

    pressing Notebook Deity

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    Got a 7700HQ arriving tomorrow. Will enable SpeedShift, do a clean install of Windows and drivers, do a simple undervolt, careful repaste with Conductonaut, and some (very) quick vent modding with Kapton tape.

    If the VRAM chips are making good contact with the heatsink, I think I will leave the factory pads on for now.
     
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  6. tachlio

    tachlio Notebook Enthusiast

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    My 2nd phase also had similar setup

    [​IMG]Thermal Manangement #2
     
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