egpu bottleneck

[rabbitanarchy14]

so i was watching linus s videos on egpu through tb3, and i see that there is not enough bandwidth for a 1080 or 2080. the benchmarks show that there is a 20% decrease in perfomance. so what i was thinking is if a 1080/2080 needs to much bandwidth why not use a 1060/1660 that requires less bandwidth and so it should lose less in performance. i could also be wrong. why would there be a performance hit with a lower bandwidth card.

[TheKDub]

There may still be a performance hit, but it won't likely be as much as with a higher end card.

[Fasauceome]

There's more to it than just a bandwidth limitation, latency is also a factor. And even with less graphical horsepower, there's not a linear correlation of bandwidth usage, so the 1660 would still be a bit choked by x4. Any time an eGPU solution is implemented, there is a performance hit, so don't expect a lossless experience regardless.

[rabbitanarchy14]

ok so would an egpu 1660ti/2060 be worth it over a 1060 mobile.

[Fasauceome]

11 minutes ago, rabbitanarchy14 said:

ok so would an egpu 1660ti/2060 be worth it over a 1060 mobile.

The 2060, maybe. An eGPU is pretty expensive so the value proposition isn't great.