PCIe 6.0 – new interface for computers

Personal computers are characterized by newer and newer connectors and interfaces that are able to handle even more efficient components with higher bandwidths. Currently, the most popular is the PCI-Express 4.0 bus, on which M.2 SSDs are based, as well as graphics cards. Although the fifth generation of the interface has not settled in our PCs for good, it is the manufacturer has already announced the PCIe 6.0 standard, which is to ensure even greater transfers.

PCIe 6.0 interface specification. High transfers on a single line

The PCI-Express 4.0 standard is more and more often used – despite the high interest in drives with the 3rd generation of the interface. Most of the 4th generation drives cost a lot, because top semiconductors are on average twice as expensive as the previous version, but the price is high performance. The standard also goes to modern graphics cards, which are characterized by increasingly higher performance and bandwidth.

PCie 6.0 adaptation
source: businesswire

Modern motherboards (on the Z690 chipset) support the PCIe 5.0 bus, which provides a bandwidth of up to 128 GB / s (on 16 lines – a single path offers 32 GT / s, or 4 GB / s). Therefore, PCI-Express 5.0 x4 disks can theoretically “spin” up to 16 GB / s, while the first tests of the Phison E26 controller show a bandwidth of 14 GB / s. The recently introduced PCIe 6.0 interface on 16 lines (x16) will guarantee both read and write at the level of 256 GB / s, and a single path (64 GT / s – 8 GB / s).

In addition, the standard uses four-level pulsed amplitude modulation (PAM-4) technology for error correction. Looking at the relatively high level of interface complexity, we can be sure that devices using this technique will be expensive to produce and initially reserved only for the enterprise segment, i.e. mainly servers. Each line is to have a slight delay of less than 10 nanoseconds.

PCie 6.0 specification
source: businesswire

How will PCIe 6.0 expansion affect devices designed for end users? The most important thing will be that M.2 NVMe PCIe 6.0 SSDs will in theory provide bandwidth of up to 32 GB / s in both directions, nevertheless, the adaptation of the standard is most likely a matter of several years.

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About Alex Marcell

He likes dogs, pizza and popcorn. Already a fanboy of Nintendo and Sony, but today throws anything. He has collaborated on sites and magazines such as GameBlast, Nintendo World, Hero and Portal Pop, but today is dedicated exclusively to Spark Chronicles.

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