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Why does full speed H2D TB3-32Gbps has just 2.2GBps actual bandwidth?
 

Why does full speed H2D TB3-32Gbps has just 2.2GBps actual bandwidth?  

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841585955
(@841585955)
New Member
Joined: 1 year ago
 

TB3 with 4 lines PCIe should have about 4GBps bandwidth in theroy, but why it just work upon 2.2GBps? Could anyone tell me about that? I'm so confused. Thx in advanced.

Plus, 2.2GBps bandwidth seems not to be enough. When I playing some texture-heavy workload games, like Forza Horizon 3 or Watch Dog 2, the FPS can drop about 20, compared with standard PCIe 3.0 x16 video cards. And I also believe that my laptop's CPU should not be a bottleneck (i5-8300H without thermal throttling), and the Aorus gaming 1070 box's turbo boost frequency works on 2GHz. However, the GPU-Z shows that my card just consumes about 50-90w when I'm gaming, which means the card isn't heavily loaded at all!

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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