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1. #EXTERNAL VIDEO CARD FOR LAPTOP GAMING MAC HOW TO#
2. #EXTERNAL VIDEO CARD FOR LAPTOP GAMING MAC DRIVERS#

They meet certain requirements that allow the connected graphics card to use its complete bandwidth. In order to achieve a significant performance gain, we will consider special types of notebooks. Meanwhile a lot has changed - but several things did not.

In early tests, a connected graphics card would often not pass. Then the question arises whether the bottleneck effect is so big that external graphics cards cannot outperform the internal graphics of a laptop. First of all, this means that the bandwidth is much lower. Because of the complexity of the interface and as only few adapters are offered, the price of a graphics adapter is extremely high in comparison.Ĭontrary to native PCIe slots with 16 lanes, the interface mentioned above only feature an x1 or x4 connection. Thunderbolt is currently the fastest interface for connecting an external graphics card. It delivers, since the end of 2013, a bandwidth of 20 Gbits with an x4 PCIe connection. Thunderbolt was developed by Intel in cooperation with Apple. The mPCIe slot features a PCIe x1 connection and a USB 2.0 connection, but the latter is sufficient for "usual" usage. Unfortunately, this slot is on the underside of notebooks and the manufacturers often do not solder the important PCIe connection. It is usually used for the WLAN or Bluetooth module. The mPCIe slot is seldom used to connect graphics cards. Because of its size and the available peripherals, less and less new laptops feature this slot. Compared to USB 3.0, this standard has a PCIe x1 connection and so, allows connecting graphics cards. It supports a bandwidth of up to 5 Gbits - older device from before 2009 achieve 2.5 Gbits.

#EXTERNAL VIDEO CARD FOR LAPTOP GAMING MAC HOW TO#

So, how to create a PCIe connection? The following interfaces can be used:Ī connection via ExpressCard slot is most common. Therefore, it is also not possible to connect it via this widespread interface.

#EXTERNAL VIDEO CARD FOR LAPTOP GAMING MAC DRIVERS#

Separate graphics drivers would be required for each notebook in order to use an external graphics card. USB 3.0 could achieve a high transfer rate, but does not have its own PCIe architecture. For example, the bandwidths of USB 2.0, Firewire, SD card slots, etc., are too low. Similar to replaceable graphics cards connected via MXM, not all notebooks allow connecting an external graphics card since most interfaces do not have PCIe architecture and do not achieve the required bandwidth.