If you’re planning to buy the Ryzen 8000G processors, you best get a DDR5-6000 memory kit to go along with it. Breaking down the memory sub-system of Phoenix, Donny Woligroski (Technical Marketing Manager for Ryzen) explained this to PC World at CES 2024. Like existing APUs, the Ryzen 8000G processors will benefit immensely from a high bandwidth memory setup.
So when you have an integrated GPU, you are relying entirely on the memory subsystem in the platform, that means your system RAM is gonna be what’s powering your GPU as well and so two things are really important.
So first thing is dual-channel RAM, absolute must, that’s a huge bandwidth advantage. Do not skip, you gotta have dual-channel. 6000 is pretty cheap nowadays, If you can do dual-channel 6000, you are gonna hit those great frame rates and really playable performance and that’s definitely that we will steer people.
Processors with integrated GPUs share the main memory between the two chips. Lacking the grunt of discrete graphics cards, they tend to rely on fast memory and bandwidth to maximize performance. The interconnect between the CPU and GPU and the memory should be clocked as high as possible. The way AMD’s fabric clock works makes this a little complicated, but we’ll get to that in a later post.
The Ryzen 8000G processors will feature a Fabric clock of 2,000MT/s, producing optimal results with DDR5-6000 memory kits (1:3). Anything higher or lower and you’re losing extra performance on the table. Unlike DDR4, DDR5 features two memory channels per DIMM and four for a dual-DIMM configuration. This should keep the Radeon 780M well-fed in most scenarios.