PCI Express-External GPUs-Custom Design Circuit Board Pcb​

- Feb 08, 2017-

PCI Express-External GPUs-Custom Design

Circuit Board Pcb

External GPUs

Theoretically, external PCIe could give a notebook the graphics power of a desktop, by connecting a notebook with any PCIe desktop video card (enclosed in its own external housing, with strong power supply and cooling); possible with an ExpressCard interface or a Thunderbolt interface. The ExpressCard interface provides bit rates of 5 Gbit/s (0.5 GB/s throughput), whereas the Thunderbolt interface provides bit rates of up to 40 Gbit/s (5 GB/s throughput).

In 2010 external card hubs were introduced that can connect to a laptop or desktop through a PCI ExpressCard slot. These hubs can accept full-sized graphics cards. Examples include MSI GUS,[60] Village Instrument's ViDock, the Asus XG Station, Bplus PE4H V3.2 adapter,[62] as well as more improvised DIY devices. However such solutions are limited by the size (often only x1) and version of the available PCIe slot on a laptop.

In 2008, AMD announced the ATI XGP technology, based on a proprietary cabling system that is compatible with PCIe ×8 signal transmissions.[64] This connector is available on the Fujitsu Amilo and the Acer Ferrari One notebooks. Fujitsu launched their AMILO GraphicBooster enclosure for XGP soon thereafter.[65] Around 2010 Acer launched the Dynavivid graphics dock for XGP.

Intel Thunderbolt interface has given opportunity to new and faster products to connect with a PCIe card externally. Magma has released the ExpressBox 3T, which can hold up to three PCIe cards (two at ×8 and one at ×4).MSI also released the Thunderbolt GUS II, a PCIe chassis dedicated for video cards. Other products such as the Sonnet’s Echo Express and mLogic’s mLink are Thunderbolt PCIe chassis in a smaller form factor.However, all these products require a computer with a Thunderbolt port (i.e., Thunderbolt devices), such as, for example, Apple's Macbook Pro released in fall 2013.

Intel 82574L Gigabit Ethernet NIC, a PCI Express ×1 card

For the professional market, Nvidia has developed the Quadro Plex external PCIe family of GPUs that can be used for advanced graphic applications. These video cards require a PCI Express ×8 or ×16 slot for the host-side card which connects to the Plex via a VHDCI carrying 8 PCIe lanes.



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