PC World - USA (2020-12)

18 PCWorld DECEMBER 2020

NEWS INTEL’S IRIS XE MAX GPU

link, according to a company

representative.)

First, however, it took a lesson

from the unusual fusion of an AMD

GPU and Intel CPU to create the

Kaby Lake-G chip (go.pcworld.

com/875g). Gaming laptops can run

both the GPU and CPU at full power.

Intel’s Dynamic Tuning shuttled

power back and forth between the

CPU and GPU to maintain an overall

thermal budget. Now, it’s brought

that technique to Iris Xe Max

graphics.

With a knowledge of what

workload is being run, what’s

happening at the system and OS

level, with temperatures and thermal

headroom, “we can make decisions about

how much power to give to each,” Moss said.

The driver software adjusts the power levels

(PLs) on each in real time, based on thermal

measurements, utilization, and more. “So if

Intel provided its own estimates for how power sharing

would benefit overall performance.

Intel’s Tiger Lake and its Iris Xe Max GPUs have common functions that can work in concert via Deep Link.

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