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TOPIC: 1070 via TB 3 eGPU vs 1060 native laptop GPU

1070 via TB 3 eGPU vs 1060 native laptop GPU 2 weeks 1 day ago #17420

  • cryptworks
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So i have been doing some research for a laptop purchase. I have come pretty close to a final decision and there is one bit of research I have not been able to find.

Thunderbolt3 eGPU's are pretty universally ~ 20% less in performance than anything on PCIe even down to 4x lanes (Such as the Alienware Graphics accelerator)

The real question. is the Nvidia GTX 1070 with that 20% drop better, Equal, or Worse than the Nvidia GTX 1060 or not. If you have any benchmark

The raw performance data of the 1070 vs the 1060 desktop cards says it should still be better even with its 20% performance hit.

Things I know. the actual use case/settings will vary based on how much load you put into the GPU vs the CPU. especially where there is data being sent to and from the GPU.
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1070 via TB 3 eGPU vs 1060 native laptop GPU 2 weeks 18 hours ago #17424

  • i7Baby
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For the cost of an external GPU, I'd look at a laptop with a really good internal GPU eg www.newegg.com/Product/ProductList.aspx?...601206491&Submit=ENE

A PC gtx PC 1070 will eat a PC gtx 1060 - gpuboss.com/gpus/GeForce-GTX-1070-vs-GeForce-GTX-1060
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1070 via TB 3 eGPU vs 1060 native laptop GPU 2 weeks 3 hours ago #17427

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One thing that gets often overlooked is the CPU Bottleneck.

Just as an example of what I mean:
The HP ProBook 430 G5 can have a Core i5-8250U. On paper, that 3.4 GHz, 4C/8T cpu looks powerful enough to run any game (and theoretically, it does) - but when installed in a thin, ultra portable Laptop, that Chip (in that HP) only runs at 3GHz for a about half a minute and then starts to throttle, down to 2.3 GHz (and even less with AVX benchmarks). This means somewhere around a 15-25% (if not more) performance loss, to the point where most games are now "bottlenecked" by the CPU.

The catch of course is, that most Notebooks that have a powerful CPU, a good cooler and a Thunderbolt 3 connector that's wired in 4x (not less!) are already heavier and in the upper price bracket (like "gaming notebooks") - where they are usually combined with a decent dedicated GPU anyways. At that point, a better onboard GPU would be cheaper then the cost for an external one (and an expensive enclosure). Not to mention the compatability and driver issues.

I personally don't see the point of those "eGPU" enclosures. I mean, what's the big benefit?

If I want to "work light" and game at home, I can get a thin/light Notebook/Tablet and a decent gaming pc (for about the same total price).

If I need the computing performance on the road, why then leave half of it at home?
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