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What's new and why is it important?



  AMD Radeon RX 5700 XT GPU
AMD Radeon RX 5700 XT AMD

The PCI Express 4.0 hardware is finally here. Solid State Drives (SSDs) and graphics cards with PCIe 4.0 support were introduced in June during Computex 201

9. This is all due to AMD.

Faster computer parts are always an exciting prospect, but at the moment we are talking mainly of noticeable increases in speed for M.2 NVMe "gum stick" SSDs. Graphics cards with PCIe 4.0 support will be available from the summer of 2019, but players do not yet need the extra bandwidth they offer. The debut comes two years after the release of the PCIe 4.0 standard in mid-2017.

To make matters worse, by the time gamer demands more bandwidth, there may be talk of a different version of PCIe overall , Just as PCIe 4.0 is being introduced on computers, the PCI Special Interest Group (PCI-SIG), which is responsible for publishing new PCIe standards, has released PCIe version 5.0.

What is PCIe?

  Different sized cards with different sizes Maximum PCIe lanes
Different size cards support different maximum PCI Express lanes. Amazon

The PCIe (Peripheral Component Internet Connect Express) standard describes the communication of expansion cards with your PC. This includes items such as video cards, sound cards, Wi-Fi cards, and M.2 NVMe SSDs. The higher the PCIe version, the more bandwidth is available to the expansion cards of a system.

PCIe expansion slots on your PC are typically available in four variants: x1, x4, x8, x16. These numbers indicate how many "lanes" each expansion slot has. The more lanes a slot has, the faster data can flow to and from the card. For example, modern graphics cards use x16 slots, while M.2 gum-stick NVMe SSDs use special slots with two or four lanes.

PCIe is also backward compatible. If you have a PCIe 4.0 graphics card, you can use it with a motherboard designed for PCIe 3.0. However, the available bandwidth of the card is limited to the features of PCIe 3.0. Conversely, a PCIe 3.0 card can fit in a PCIe 4.0 slot, but this is limited by PCIe 3.0.

These are the basics of PCIe. For more information about the different PCI Express connectors on your motherboard, see our explanations.

What's new in PCIe 4.0?

The key feature of any new PCIe release is that its bandwidth is doubled over the previous generation. All possible numbers are thrown about what that means. In practice, a PCIe 4.0 x16 slot can theoretically transmit approximately 32 gigabytes per second (GB) of data in each direction, while PCIe 3.0 has a maximum speed of 16 GB / s, as you guessed.

Many People Will Do It Also Talk about PCIe 4.0 x16 with a bandwidth of about 64 GB / s, but in this case only the total amount of data flowing in both directions is counted. No matter how you judge it, the speed of PCs is very high, and graphics cards with PCIe 4.0 x16 slots are on the way.

As mentioned earlier, adding bandwidth for video adapters is not the problem right now. PCIe 3.0 is fine for gamers. Peripherals such as NVMe SSDs offer the most significant speed difference in these early days of the new standard.

PCIe 4.0 not only offers higher speed for components, but also better signal reliability and integrity for improved performance.

Operating a PC at Home The most important thing about PCIe 4.0 is that it doubles PCIe 3.0's bandwidth.

When can I get it?

As previously mentioned, Computex 2019 debuted PCIe 4.0 with product announcements from AMD, Corsair and Gigabyte among others. Intel has not yet said anything about PCIe 4.0 for consumer hardware – and even claims that it would not help speed up your PC game – so PCIe 4.0 is all about AMD systems for now.

  The Asus Pro WS, an X570 motherboard.
The Asus Pro WS X570 motherboard. Asus

AMD announced its X570 chipset with PCIe 4.0 support at Computex. The manufacturers introduced dozens of X570 motherboards, including ASRock, Asus, Gigabyte and MSI. These X570 boards are not cheap and are expected to produce a good amount of heat. Almost every board, from the average budget player unit to the ultra-deluxe RGB-equipped monster, had fans to keep the components cool. Higher endplates also added additional heatsinks, tubes and, in some cases, liquid cooling systems. This is only for the board itself and not typical.

In addition to a PCIe 4.0 motherboard, you need a processor that supports it, which is a third-generation Ryzen processor. At Computex, AMD announced five different Ryzen 3000 processors ranging in price from a $ 200 six-core processor to a $ 500 twelve-core workhorse. Delivery of these new CPUs will begin on Sunday, July 7, 2019.

Computex was not the end of AMD's PCIe 4.0 push. A few days later, the company followed up on the E3 2019 gaming conference with two new graphics cards supporting PCIe 4.0, including the Radeon RX 5700 XT and the Radeon RX 5700. The new cards will also be available on Sunday, July 7, 2019. introduced. [19659013] Older Motherboards Will Not Get PCIe 4.0

AMD's new processors still use the AM4 socket like previous Ryzen generations. This means that newer Ryzen 3000 chips will fit into motherboards built for Ryzen 2000 CPUs such as X470 and B450 motherboards. However, to get PCIe 4.0 you need a newer motherboard built to the new standard.

This may surprise some PCIe fans, as motherboard manufacturers have already released firmware updates that offer only limited PCIe 4.0 support to older boards. The problem is that these updates only work with certain motherboards that meet the high requirements of PCIe 4.0. Even then, the upgrade is expected to work only with the topmost PCIe x16 slot (which would normally be used for graphics cards) and possibly some M.2 slots.

AMD decided that this mess of upgrades was far too complicated for the average person. To avoid confusion, the company put an end to them. You may still find some motherboard updates online that install PCIe 4.0 on older motherboards. These are not recommended. If you want PCIe 4.0, it is best to buy a new motherboard and a new processor.

  The Corsair MP600
The Corsair MP600 Corsair

On Corsets 3000 processors and X570 motherboards Corsair also announced the Corsair MP600, a M.2 NVMe SSD with rubber stick, the PCIe 4.0 with Reading speeds of almost 5,000 megabytes per second (MBps) supported.

A high-performance PCIe 3.0 M.2 NVMe drive by comparison hits around 3,500 Mbps. The new M.2 from Corsair also has a nasty heat sink that keeps it cool. The MP600 will be released in July.

Gigabyte announced an Aorus NVMe Gen 4 SSD with a similar read speed to Corsair's MP600. Instead of the large heatsink, the Gigabyte SSD comes with a full-body copper heat spreader. Gigabyte did not specify exactly when the SSD would start, but the company says it will be available soon.

Patriot, a smaller memory manufacturer, plans to introduce PCIe 4.0 SSDs over the course of 2019.

PCIe 5.0 was just announced, Too

when the introduction of PCIe 4.0 parts was not complicated enough the PCI-SIG Computex announcing PCIe 5.0. Again at 5.0 we have a doubling of the bandwidth. Instead of 32 GB / s in each direction for an x16 slot in PCIe 4.0, we get 64 GB / s with PCIe 5.0.

Faster is better, so we'll probably release PCIe 5.0 components soon, right? Maybe some companies will even ignore PCIe 4.0 completely?

Well, not so fast.

AMD and its production partners are already investing in PCIe 4.0, so they may not want to get started right away. In addition, it should take some time to overcome the technical challenges of implementing PCIe 5.0.

We can already see that PCIe 4.0, for example, is hotter than PCs with PCIe 3.0. This suggests that we may not have seen PCIe 5.0 as perfect PCIe 4.0 for component and device manufacturers for some time now.

With Intel currently running out of PCIe 4.0 support, the company may want to upgrade to PCIe 5.0 to steal some of AMD's thunder, but that's just speculation. So far, neither AMD nor Intel seems to be so interested in PCIe 5.0 that we may have to wait a few more years.

Right now it's all about PCIe 4.0 and AMD-based systems only.


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