The MacBook Air 2013 has never brought the Retina display screen that is expected by all. However, as a thin and light portable book, the new power attribute addition is even more gratifying. The 128GB SSD, the lowest standard of the whole system, is not only an improvement of capacity, but also a breakthrough in the 600MB/s bottleneck of SATA 6Gbps interface.

Here, MacBook Air 13 inch is selected. In 2013, Mid (mid year) beggar version tested SSD.

In the actual test, the maximum reading speed of this SSD in the Disk Speed Test is 800MB/s. The write speed also exceeds 500MB/s, which is far below the average 700MB/s standard.

Since the QuickBench server is updated and cannot be purchased for the time being, let's borrow two anandtech pictures to illustrate the performance of this SSD. The write speed is up to 714MB/s, and the read speed is still 800MB/s.

On the system hardware information, it shows that the MacBook Air SSD uses the PCI-E interface, which should actually be the mSATA interface. Through the PCI-E channel, many mainboards have used similar designs. This is the key for SSDs to break the 600MB/s transmission bottleneck of the SATA 6Gbps interface.

Apple PCIe SSD is completely different from 2.5 inch SSD and PCI-E storage array card.
The PCIe SSD used by Apple Macbook Air comes from Samsung OEM and uses the PCI-E bus, which looks similar to the previous generation of Apple SSD.

The interface of PCIe SSD is a form of representation. It may be a PCI-E traditional interface, which appears in the shape of a graphics card. Its key lies in the PCI-E native/bridge master, which determines whether it can use the PCI-E bus. Other parts such as flash memory and cache are similar to SATA interface SSD.

The Apple PCIe SSD uses the Samsung S4LN021X01-8030 PCI-E native master, which is different from the S4LN053X01-8030 SATA port master used by the 840PRO SSD. The former brings nearly 800MB/s read/write speed to the new generation of Apple SSD; The latter causes the 840PRO SSD to fail to break the speed limit of 600MB/s.

The DMI bus bandwidth of Intel 7 series motherboard is 2GB, which needs to be allocated to SATA3.0, USB3.0, PCIE 2.0 1X and other ports. In order to avoid six SATA ports working at full speed and bursting the DMI bus, Intel restricts the bandwidth of the SATA port module.

Because DMI bus bandwidth is insufficient. If you want to improve the performance of SSDs, you must first solve the bandwidth limitation of the interface. The best way is to learn the storage array card of the PCI-E interface and take the PCI-E bus.

The SSD card is so powerful, but it's hard to notice that you live in happiness, so you have to show the boot time.

The 2013 MacBook Air is 10.9 seconds.

The 2012 MacBook Air is 10.9+4=14.9 seconds.

The in-depth use evaluation will be updated in succession.