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Parts shortage causes Gigabyte to avoid controversial phase doublers with other manufacturers expected to follow

Gigabyte appears to have redesigned two of their B550 motherboards without phase doublers in their VRM design. (Image Source: Gigabyte)
Gigabyte appears to have redesigned two of their B550 motherboards without phase doublers in their VRM design. (Image Source: Gigabyte)
A global shortage of phase doublers, which allow manufacturers to use lower-rated PWM controllers in their VRM designs, appears to be leading to motherboard redesigns with improved efficiency.

Enthusiasts that are looking for motherboards that support high-end processors or stable overclocking know to look for motherboards with good quality multi-phase VRMs with a matching controller. These are often reported as their phase layouts, such as 6+2 phase or 8+2 phase.

However, manufacturers often use phase doublers to split the power delivery across multiple phases and use a cheaper PWM controller that wasn’t designed for as many phases as it is now controlling. Using a doubler doesn’t mean the design is poor quality, but many of those pushing their hardware to its limits insist on using motherboards without doublers.

Overclock3d has received information regarding a shortage of these phase doublers and noted that Gigabyte has redesigned two of their mid-range B550 AM4 motherboards with PWM controllers that match the true number of phases. These redesigns would be more efficient than the originals and may be preferred by some despite a potential increase in price.

More detail regarding the changes and the redesigned models is available at the Overlock3d link below.

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2020 08 > Parts shortage causes Gigabyte to avoid controversial phase doublers with other manufacturers expected to follow
Craig Ward, 2020-08-23 (Update: 2020-08-23)
Craig Ward
Craig Ward - News Editor
I grew up in a family surrounded by technology, starting with my father loading up games for me on a Commodore 64, and later on a 486. In the late 90's and early 00's I started learning how to tinker with Windows, while also playing around with Linux distributions, both of which gave me an interest for learning how to make software do what you want it to do, and modifying settings that aren't normally user accessible. After this I started building my own computers, and tearing laptops apart, which gave me an insight into hardware and how it works in a complete system. Now keeping up with the latest in hardware and software news is a passion of mine.