Programming Reference News Today

Introduction One of the coolest features of AMD’s Ryzen desktop CPUs, and historically a great reason to get them over the competition, was the official support for error-corrected memory (ECC RAM)1. With most Ryzen 1000 through 5000 series CPUs and the right motherboards, ordinary users could get ECC RAM going without having to spring for more expensive workstation-grade CPUs. Specification page for the B550 Steel Legend motherboard. For example, here’s the specification pag...

AMD didn't present a lot of new info about the Zen 4 core at their Hot Chips 2023 presentation. Uops.info has measured execution throughput and latency for instructions on Zen 4. We've dug deep into Zen 4's microarchitecture in a set of articles as well. However, the Zen 4 core architecture is still an important…

The AMD processor programming reference has revealed an interesting bit of information regarding the Ryzen 7000 “Phoenix” chips. As per the documentation, the upcoming series of APUs will feature SKUs with a hybrid architecture, meaning they'll pack performance and efficiency cores. InstLatX64 (via VideoCardz) found a Phoenix 2 hybrid APU (2 P-cores + 4 E-cores) …

AMD's Phoenix 2 APUs are expected to feature a similar hybrid configuration as Intel's modern-day CPUs with performance & efficiency cores.

The hybrid Phoenix APUs are said to use a mix of “big” Zen 4 cores for heavy lifting and “small” Zen 4C cores to chip away at background tasks.