The all new GUS

Ideally, your laptop is packing an Intel quad-core Core processor, or a dual-core Core processor with Hyperthreading. It’d also be a great idea to swap your spinning hard drive for an SSD. The latter is far more responsive and makes the gaming experience much better, but it’s not a necessity.
The PCIe board is a specialized piece of equipment. The most popular place to grab a board for ExpressCard and mPCIe users is BPlus in Taiwan ( If you’re looking at using Thunderbolt 2.0 for an eGPU setup there are enclosures you can buy. Check out this eGPU setup featured on AnandTech, as well as Norway-based blogger Poul Peter Serek’s DIY eGPU project for more details.