It’s been generally expected that AMD would continue to provide silicon solutions for both Sony and Microsoft in their next generation of consoles. We’ve seen numerous leaks and rumors that pointed in this direction and Sony has confirmed that the PlayStation 5 is expected in 2020. What we haven’t heard is formal confirmation of the fact from AMD — until now.
Speaking on CNBC (via Overclock3D), AMD CEO Lisa Su confirmed that her company is “working with both Sony and Microsoft on consoles” and expected to provide the “secret sauce” for both designs. Right now, what we’ve heard is that the CPUs in both consoles are likely to be Zen derivatives, while the GPU for the PS5 is said to be based on AMD’s Navi — which may itself have been heavily influenced by Sony’s PlayStation 5 plans.
I once down-clocked a Kaveri and dropped it to a single memory channel to perform the closest clock-for-clock comparison against Kabini (Jaguar) that I could, even though the half-speed L2 cache on Jaguar made it impossible to compare the chips in an apples-to-apples configuration. The two CPUs were surprisingly competitive in terms of overall performance, though Kaveri was faster overall. But Ryzen is much faster than Kaveri — and that gives AMD some room to maneuver when it comes to picking CPU characteristics.
If Sony and Microsoft want a true eight-core SoC (as opposed to two distinct quad-core CPU clusters), they can have one with Ryzen. Its vastly increased efficiency relative to Bulldozer or Jaguar means that both companies will have the option to keep clocks (and therefore power consumption) low, allocating more power for the GPU cluster if desired. If we assume that the gap between Kaveri and Kabini was just 1.15x clock-for-clock and the gap between Ryzen and Kaveri IPC corresponds to the 1.52x AMD claimed at the Zen launch, then AMD has the opportunity to deliver a huge efficiency improvement without touching the clock speed. This last point matters because keeping CPU clocks low is a critical way to tamp down on power consumption, allowing more horsepower to be diverted to the GPU when necessary.
Without knowing more about Navi, it’s hard to speculate on what kind of GPU capabilities might be baked into the platform, but there’s a chance that the gains here could be significant. AMD has been using the same fundamental GCN architecture since 2012. The company has made the decision to align its product roadmaps with the console manufacturer timelines and needs. Given the desperate financial straits, AMD was in five years ago, this decision made a great deal of long-term strategic sense and may have even saved the company from bankruptcy. But it also means that this PS5 / Xbox Next technology ramp is probably our best chance to see a major shift in graphics technology.
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