"AMD wrote drivers for its own Radeon GPUs in order to support an external graphics chassis. Radeon cards running Radeon Software 16.2.2 or later are capable of plug-and-play configuration with an external chassis. The new software can monitor which applications are running on an external GPU and offers the option to close current applications and prep the system for safe removal. Unlike previous solutions, you can connect or disconnect an external dock without rebooting the system."
"Razer built the first system to support this feature (the Razer Blade Stealth) and is the first company to adopt the BIOS extensions and capabilities required to allow for PCI Express hot-plugging. Razer also built the first desktop chassis (the Razer Core). Right now, the Razer Blade Stealth and Razer Core are the only compatible products on the market, but that will change with future launches."
The problem is, it requires an Intel platform. Not so bad now as there's no way high end laptops wouldn't use a high end i7, but when Zen rolls around...
Well, some new information has been released. Pretty steep price:
"Over the past few weeks we’ve written about AMD’s XConnect technology, and its cooperation with both Intel and Razer to create an external graphics specification that wouldn’t depend on any one vendor, chassis, or technology. The Razer Blade Stealth and Razer Core are the first laptop and external chassis to come to market featuring this capability, and we’re already seeing some promising signs of cross-platform compatibility — but it doesn’t come cheap."
"First, the good news: At GDC this week, Intel announced a new Skull Canyon NUC (Next Unit of Computing). This new device is built around a 45W Core i7 6770HQ CPU with Intel Iris Pro 580 graphics. That’s the largest graphics part Intel currently ships, with 78 execution units and a 128MB EDRAM cache. Based on the performance we’ve seen from other Intel GPUs, the Iris Pro 580 should be a formidable contender. The device also supports USB 3.1 Gen 2 (10Gbps), M2.SATA drives, HDMI 2.0 support, and comes with built-in Intel 802.11ac wireless.
The new NUC (part number NUC6i7KYK) is also fully compatible with the Razer Core, which means gamers interested in both devices can expect to pair Razer’s external chassis with Intel’s hardware with no problems — provided you’re willing to drop some serious cash to do so."
According to Razer, the Core will cost $500 if purchased separately from the Razer Blade Stealth and $400 if bought with either the Razer Blade Stealth or the new Razer Blade refresh. The Core isn’t just an external chassis — it also offers 4x USB 3.0 ports, gigabit Ethernet, and ships with its own 375W power supply — but $400 – $500 is quite steep, especially considering that the Razer Blade Stealth has a $1,000 minimum price."