Casem0

I am trying to install a DIY eGPU on my W520, computer specs below: Thinkpad W520 (427637U) Win7 Intel Core i7-2720QM 2.2GHz, 6MB L3 Cache 8GB DDR3 NVIDIA Quadro 1000M, Dedicated 2GB (also has Intel) 1 x ExpressCard/34 Two USB 3.0 (blue) one Powered USB 2.0 (yellow) one USB 2.0/eSATA combo port 4-in-1 reader (MMC, SD, SDHC, SDXC) So I have my Expresscard slot (CHECK). I was trying to read this pretty thorough guide (DIY eGPU experiences), but got completely lost at the "How to check if your laptop is eGPU compatible?" step. I have no idea about "TOLUD" and how to check PCI bus for RAM compatibility. I did find another few articles talking about Thinkpads have issues with the BIOS version, but still have no idea what they are talking about. Basically, I would LOVE LOVE LOVE some insight and/or direction as to: 1) best GPU cost/performance wise. Also, best GPU to match up with the pci slot data transfer. I read about bottlenecking..... 2) the bios thing Thanks Friends!!