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Intel Alder Lake B660 gaming motherboards may not support PCIe Gen5

In an effort to bring down the cost of the budget B660 chipset, it appears Asus may cut support for PCIe Gen5 on its upcoming gaming motherboards

A close up of a motherboard's CPU socket

Intel’s Alder Lake processors are the only consumer-grade CPUs that support the new PCIe Gen 5 specification, at least until AMD’s Zen 4 chips arrive in 2022. However, it appears that motherboards using the more budget-oriented B660 chipset might stunt the 12th generation Core processors’ capabilities and only support up to PCIe Gen 4.

Videocardz has received an image from a source who claims that Asus shipped a Z690 motherboard to them in a mislabelled box, which reveals that the company’s upcoming Prime B660 Plus board will only support up to PCIe Gen4. This decision by Asus is somewhat confusing, as PCIe Gen5 lanes aren’t related to chipsets and are instead part of a processor’s specifications, but this is likely related to cost-cutting efforts.

While the lack of PCIe Gen5 on B660 motherboards makes them less futureproof as components like the best SSDs for gaming and RTX 4000 graphics cards will eventually use the specification as standard, it’ll be some time before they become commonplace or affordable. As such, forgoing PCIe Gen5 may make sense in the short term for anyone trying to build a gaming PC on a smaller budget.

Thankfully, while Intel’s Alder Lake chips rank among the best gaming CPUs you can buy right now, they’re extremely competitive in terms of price and performance when compared to AMD’s current Ryzen 5000 processors. In addition to top tier performance, there are other niceties that come with running an LGA 1700 socket as well, such as a new ‘PCIe Slot Q-release’ feature which should help anyone with a chonky GPU.

However, it might be best to wait a while for all of Alder Lake’s major kinks and bugs to be ironed out, as early adopters are currently struggling to play some of the latest PC games. That is, of course, if you can find one as the ongoing chip shortage is continuing to create supply issues.