i use eGPU 3 months ago and i know that eGPU for mPCIE/EC can't use full 100% power GPU, bandwith limited and i have question: 1. You know laptop have a pcie 2.0 or 3.0 have 2, 4, 8 or 16 lanes?? 2. why exp gdc, pe4c, pe4l have16 lanes while laptop have limited bandwith??? 3. i use GTX 970 w\in EXP GDC beast and plug in mpcie 2.0 x1, intel hm67, is that about more than 80% this card?? 4. In topic http://forum.techinferno.com/implementation-guides-pc/7388-15-lenovo-w540-r9_290x-gtx780ti%4010gbps-4gbps-sonnet-ee-se2-pe4l-2-1b-%5Bgothic860%5D.html#post101232 gothic860 have a high benchmark score with EC2, is that he can use full power GPU?? 5. http://forum.notebookreview.com/threads/diy-egpu-experiences.418851/ in FAQ 13.5 what do he means that PCIe compression engages gaining anywhere from 20-333% better performance over a x1 2.0 link without compression.