The fourth generation of PCIe does not make its way to AMD’s previous generation motherboards
One of the important aspects of processor series 3000 Ryzen, which will be released next month, supports the fourth generation communication standard PCIe. This communication standard will replace the PCIe 3.0 standard by offering double the bandwidth and a wide range of improvements compared to its previous generation. Combining the latest technologies with current and new AM4 motherboards has always had some issues. AMD has made this issue somewhat clear by posting an article on the Reddit website; Transparency that AMD business partners have also signed.
- Everything we know about the PCIe 4.0 standard
- AMD introduced the X570 chip equipped with PCIe 4.0 capability
Passing the PCIe 3.0 standard and moving to the new PCIe 4.0 standard on the motherboard is not so complicated and difficult. For this purpose, it is necessary to set and fulfill the signaling strategies in the communication paths between the processor and the PCIe slots according to the new standard. If the PCIe 3.0 motherboard is well-engineered from the beginning and supports PCIe 3.0 connections properly, it is possible to send PCIe 4.0 signals on the same communication paths of the board without any interruptions. However, not all PCIe 3.0 motherboards are engineered this well. The problem starts where some of these motherboards work properly in sending signals according to the PCIe 4.0 standard; But in the meantime, there are boards that can only and sometimes with difficulty support PCIe 3.0 signaling speeds.
Until the unveiling Official Ryzen 3000 series processors, many users have speculated about support for older motherboards with X470 and X370 chips and even cheaper types of chips available from the PCIe 4.0 communication standard. Users who bought powerful and expensive motherboards with AM4 socket and PCIe 3.0 slots in the current market believed that their product has a good design to support the fourth generation of PCIe and this possibility will be provided soon in the BIOS update in such products. Even in some GIGABYTE brand motherboards, BIOS options were added to support PCIe 4.0. With all these words, AMD officially poured clean water on the hands of its fans and announced that the realization of this idea in current motherboards is ruled out.
Accordingly, only motherboards that can support the fourth generation PCIe standard in the future are motherboards with a 500 series chip, the only current example of which is the AMD X570 chip. Of course, it is expected that the production line of B550 chips will be launched soon and by the end of this year, we will see the presence of these chips in the market. These chips have been certified to support PCIe 4.0, and evidence suggests that none of the older chips will make the list. AMD does not intend to create confusion and inflammation in the market by relying on the quality of old motherboards and cause some users to enjoy the benefits of the new standard in their current motherboards and others not.
Robert Hallock, one of AMD’s Ryzen product managers, posted on Reddit saying:
Motherboards with chips older than X570 will not support PCIe Gen 4. There is no guarantee that older motherboards can reliably handle the more stringent signaling requirements of the 4G communication standard. Simply put, we can’t afford to confuse our users with a mix of yes and no and maybe options in the older motherboard market. The potential for inflammation and confusion in such a market is enormous. When the latest BIOS versions of older motherboards arrive to support 3rd generation Ryzen processors, simultaneous support for 4th generation PCIe will no longer be a likely option. We wanted to support this standard in our older products; But the risk of such work is very high. It is the 4th generation PCIe communication standard, should look to buy a motherboard with the updated X570 chip. By updating the BIOS of all X470 and X370 motherboards, it is possible to support Ryzen 3000 series processors; But due to the fact that these motherboards do not support the PCIe 4.0 communication standard, these processors will only work in PCIe 3.0 mode.
Two concepts can be He took from this news: 1. With this, AMD has rejected all those who have spent a lot of money to buy X370 or X470 professional motherboards; 2. At least until the end of 2019, we will not see the release of many products supporting the fourth generation PCIe standard in the hardware market. Navi GPUs with support for PCIe 4.0 slots are set to replace AMD’s mid-range product portfolio with Polaris architecture this year. So, if users currently own a high-end graphics card, they will not face any particular problem to run today’s games without upgrading their current graphics card to one of the AMD Navi products. On the other hand, to buy affordable PCIe 4.0 SSDs, it is better to wait until next year and the release of dedicated controllers of this standard to the market. Therefore, it can be said that users of older AMD motherboards have not lost much without access to the PCIe 4.0 standard.