AMD explained why it doesnt use chiplets in mobile APUs

AMD explained why it doesn’t use chiplets in mobile APUs – it’s all about power efficiency

The move to chiplets has been central to the success of Ryzen desktop processors. However, AMD is still thinking about how to implement the chiplet architecture in the mobile segment of its processors. David McAfee, AMD’s corporate vice president, who leads the company’s customer-facing retail business, spoke about this in a conversation with the South Korean press.

    Image source: AMD

Image source: AMD

AMD believes that the transition to chiplet design in the mobile segment will definitely have a negative impact on the energy efficiency of processors. The ultra-compact and lightweight laptop category commonly uses processors with a nominal TDP range of 15-30W. Here AMD relies entirely on chips with a monolithic die design. And that doesn’t seem to be changing any time soon.

AMD Vice President David McAfee was asked in a recent interview why the company, which has achieved success in chiplet design for desktop processors, is not thinking about using them in the mobile segment.

“When developing new products, both desktop and mobile, we consider monolithic and chiplet structures. However, the transition to chiplet architecture in laptops is accompanied by difficulties related to energy efficiency. When implementing chiplets, compromises must be made in terms of power consumption. So it’s time to switch to chiplets [в мобильном сегменте] comes when it will be advisable to grapple with the depth of this compromise. Taking all factors into account, we now see that the monolithic structure of processors is more energy efficient than the chiplet structure. If this changes in the future, we may consider using chiplets in the mobile segment.”McAfee replied.

    AMD Vice President David McAfee (right).  Image source: QuasarZone

AMD Vice President David McAfee (right). Image source: QuasarZone

It should be added that McAfee’s answer applies exclusively to AMD mobile processors, or so-called APUs. Let’s remember that the Ryzen 7000 mobile chips include a number of Dragon Range processors that use a chiplet architecture, since they are essentially desktop Ryzen 7000 chips but in a mobile BGA package. McAfee speaks of energy-efficient processors like the Phoenix series, which still rely on a monolithic die design.

There are advantages and disadvantages to using a chiplet design for mobile APUs. Intel has been experimenting with chiplets for some time and will release the first Meteor Lake client mobile processors with chiplet architecture in December. These processors consist of four chiplets: GPU, SoC, CPU and IO. In addition, everything is manufactured using different technical processes. One of the distinctive aspects of Intel’s approach to the chiplet structure of processors is the ability to replace or enlarge certain chiplets as necessary during their production, allowing, for example, the use of a larger or smaller CPU or GPU chiplet. Depending on the specific requirements or capabilities of the future system. his base.


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Dylan Harris

Dylan Harris is fascinated by tests and reviews of computer hardware.

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