Long seen as the Holy Grail of universal connection capabilities, engineers at companies like AMD, Nvidia, and Intel have been working feverishly for years to find a cable that was both fast and small enough to handle the type of bandwidth that a graphics card needs to communicate with a standalone system. RELATED: G-Sync and FreeSync Explained: Variable Refresh Rates for Gaming This could all change very soon though, thanks to the advent of Thunderbolt 3.0. The problem with this dream scenario, however, lies in the details of the technology that’s necessary to make it work, which until recently has been hampered by the speed limitations present in older connection standards like USB 2.0, Thunderbolt 2, and FireWire. What an external graphics card does is act as a sort of surrogate powerhouse, one that you plug into while you’re at home and in the mood for a good gaming session, but leave behind when you and your laptop need to get on the road. The tech is predicated on the idea that even though most of the gaming laptops we love can handle simple games like League of Legends or Dota 2 on medium settings without losing a frame, when you really want to break out the AAA titles like Tomb Raider or Batman: Arkham Knight on ultra 4K resolution, that’s when you’ll start to hear the sound of cooling fans straining to keep up and see your graphics card drivers crashing for the fifth time in a row. RELATED: Choosing Your Next Gaming PC: Should You Build, Buy, or Get a Laptop? Without getting too technical about it, the general concept involves hooking up a regular laptop to an external graphics card through a single cable, which can then take all of the load off your laptop’s internal GPU and put it on the more powerful extension instead. An eGPU, short for (you guessed it) “External Graphics Processing Unit” is an idea that has been floating around the ether of the Internet for years, and in the R&D departments of video card manufacturers for even longer.
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