RTX 3080 in an eGPU discussion

Discussion in 'e-GPU (External Graphics) Discussion' started by hfm, Sep 20, 2020.

  1. hfm

    hfm Notebook Prophet

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    Something smells off about that, Control was running much better for me with RTX on High than he is showing there, and I have a theoretically slower CPU and GPU.. some of his numbers seemed off. I don't really feel like redownloading Control and Doom: Eternal (the only two games I own that he used) to refute those scores.. but something seems off there. Unless I'm just happy with it and not very sensitive to it.
     
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  2. Tyranus07

    Tyranus07 Notebook Evangelist

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    This one here seems pretty close to what I'm trying to do:



    Though the 3DMark test is pretty good on the eGPU compared to the mobile 1080, while gaming the eGPU RTX 2080 Ti is just not as good most of the time compared to the GTX 1080. Which is pretty sad. How is that even possible?
     
  3. hfm

    hfm Notebook Prophet

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    TB3 is slow compared to PCIe x16
     
  4. Tyranus07

    Tyranus07 Notebook Evangelist

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    Oh yeah, so we need to see in game performance of the eGPU 3080 and not being so excited by synthetic benchmarks, which in this case not always seems to translate in to better performance
     
  5. Biker Gremling

    Biker Gremling Notebook Evangelist

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    I honestly would look forwards to an eGPU with an 2080 Ti or 2080 due to the lower TDP of 250W.
     
  6. hfm

    hfm Notebook Prophet

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    Those cards aren't a big enough jump for me. I just want to try to lock every game at 60 with full details and RTX. That isn't happening right now.
     
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  7. JRE84

    JRE84 Notebook Deity

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    just because it says ultra doesnt mean your getting more details.ultra is way way over the top with the fact low medium and some high looks just as good
     
  8. etern4l

    etern4l Notebook Virtuoso

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    BTW Most laptops and even desktops only use 8 PCIe lanes. In games it all depends on how much data needs to be constantly sent to the GPU. If there is a lot of texture streaming then TB3 could bottleneck, so in that case the 3090 should be the answer with its 24GB of VRAM.
     
  9. etern4l

    etern4l Notebook Virtuoso

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    I stopped watching after he explained his garbage "methodology".
     
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  10. hfm

    hfm Notebook Prophet

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    The performance uplift of having the TB controller directly connected to the CPU is quite frankly massive. Ice Lake and Tiger Lake U series have been the only CPUs with this configuration so far. The Intel H35 chips starting to come out now (i7-113xxH series) have this benefit as well. The good news is that it appears based on Intel's recent slides and some articles that nearly all the upcoming 11th Gen H parts are going to have this scenario. The i5-11400H and i7-11800H are the ones I've seen reports of, if that's true I would imagine there will be an embedded TB4 controller up and down the entire H line. I think the 6c/12t i5-11400H is going to be a sweet place to land for eGPU gaming this year.

    If I was in the market for build an eGPU system and wanted something a little better than an i7-1165G7 or i7-1185G7 (make sure the notebook is using 28W!), or even i7-11370H (they are all 4c/8t) I would wait until later this year and see what good Rocket Lake S parts are going to appear. The external TB controller for the 10th Gen H parts is a huge performance hinderance.

    For some proof, watch this Ice Lake i7-1065G7 (28W 4c/8t) in a Razer Blade Stealth 13 stomp all over a laptop with an i7-10750H (45W 6c/12t) in eGPU gaming with a 3090. It's because of the direct-to-CPU TB controller in Ice Lake U vs external controller in 10th Gen H.
     
    Last edited: Feb 14, 2021
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