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With little new pro release, see the type-c interfaces with full-featured, has been engaged in any type-c, what a fully functional, semi-functional understand? And what difference Lightning 3, Lightning 3, what full speed, half speed. Due to confuse, so I read a lot of information online, to sum up here for subsequent inspection
Talk about usb3.1 and lightning 3
usb interface familiar to everyone, that is, we often say that this is
but actually like this stands for USB Type-A, in addition to USB Type-B, USB Type- C
These refer to the shape of the interface I believe you have heard what 2.0,3.0,3.1 USB does this actually mean transport protocol.
Due to the current use of the relatively large number of USB3.1, the USB family is the fastest, the limit can reach 10GB / S
but in fact not every USB3.1 limit can reach 10GB / S.
USB3.1 is divided into Gen1 and Gen2, Gen1 maximum transfer rate of 5Gb / s, Gen2 only for the maximum transfer rate of 10Gb / s
and this information, if you just look through the interface is not apparent, because they are long same.
Let me say Lightning 3, Lightning 3 English called thunderbolt3, is a transport protocol intel out, before there thunderbolt1, thunderbolt2
thunderbolt1, common interface long thunderbolt2 below this, in fact, the shape of the DP interface, thunderbolt1 up to 10Gbps / S, thunderbolt2 up to 20Gbps / S
thunderbolt3 long this, which supports up to 40Gbps / S
, you might say, FML, thunderbolt3 how Like USB Type-c a dime? Yes, you're right, that is the same as a dime.
So some notebook manufacturers to allow users to distinguish, will add a logo beside lightning Lightning 3 Interface This interface is not the usb typec interface.
So you see the lightning, basically you can determine that he is the lightning 3.
Talk about full-featured type-c in the end what it means
Full function type-c is the integration line (DP video output) DisplayPort Alt Mode, which alternative mode allows native DisplayPort definition digital signal USB Type-C transmission,
a talking is a full function video transmission, part- only support data transfer and charging , so if you imagine that follows an external monitor, be sure to buy a full-featured, of course, all functional and non-full-function on the interface you can not tell, but most will come up with a full-featured to blow (such as small new pro 13.3), did not indicate the basic full-featured.
Talk about full-speed and half-speed Lightning 3 Lightning 3
Lightning 3 combines the interface bus 4 PCIe3.0, USB3.1 Gen2 and DP1.2 / 1.4
而之所以会存在满速与半速，其主要原因是部分轻薄本独立显卡加入后占据了部分PCIe，导致剩余的原生PCIe通道数不足4条，只有2条PCle，因此只能采用半速的雷电3接口。
其主要影响除了外接显卡时最高只能在PCIe2带宽下运行外，主要集中在一些基于雷电满速版的超强带宽而支持的特性上。
比如在外接PCIe4带宽的固态硬盘时无法以最高读写速度运行、基于40Gbps带宽支持的外接单个5K显示器的功能告吹、在外接雷电接口显示器时，分配给显示器上的其他接口的带宽会有所削弱。
那么如何分辨是满速和半速的雷电3，通过接口也是看不出来的，但一般如果是满速，厂商早就吹爆了。比如联想的y9000x就是两个满速雷电3
说说雷电3的NB之处
雷电3可以作为视频输出接口外接显示器，它可以连接两个4K分辨率/60Hz的显示器或者一个5K分辨率/60Hz的显示器。加上笔记本本身的屏幕，用户最多可以享受到3块显示器带来的震撼体验。相比usb3.1的只能进行单个4K屏输出。
雷电3接口可以为笔记本或者手机、平板等外接设备充电，最大供电能力可达100W。试想，当笔记本不再需要庞大的电源适配器来充电的时候，它的便携性将会更加突出。
此外，雷电3接口还可以外接显卡扩展坞，为笔记本提供更强的图形处理能力。
总的来说，一个雷电3接口就可以搞定传输数据、外接显示器、双向充电等功能，它将为我们使用笔记本带来极大的便利。
值得一提的是，英特尔在今年初开放了雷电3协议规范，从此以后，无论是PC设备、平板设备，还是任何形式的外接扩展设备，都将无需向英特尔缴纳高昂的授权费。
最后说说关于雷电3外接显卡
Lightning 3 supports up to 40Gbps / S, while desktop graphics standard bandwidth of 64Gbps. Therefore, the use of full speed Lightning 3 external graphics card, still have performance loss, but this is the strongest solution if you are not satisfied, it would have to Nuisance way.
to sum up
Anyway, below buy wrong against
me say the following type-c refers usb3.1 type-c. 3 denotes the transport protocol is Lightning Lightning 3 but the interface shape is a shape of the interface type-c. Because these two interfaces as long
if the manufacturers did not say that the interface is lightning 3 or type-c, that he basically is type-c.
If the seller says he is lightning 3, but did not say full speed or half speed, that he basically is half speed.
type-c supports up to 10Gbps / s. Lightning 3 supports up to 40Gbps / s
Lightning 3 full speed> 3 and a half lightning speed> full function Type-c> non-full-function type-c
But: daily use, if you do not need to add two 4K displays simultaneously, no external graphics card, then buy a full-featured type-c's enough.
