Evaluating the Infinity Cache in AMD Strix Halo
Evaluating the Infinity Cache in AMD Strix HaloChester LamOct 22, 20254ShareStrix Halo is the codename for AMD’s highest end mobile chip, which is used in the Ryzen AI MAX series. It combines a powerful CPU with 16 Zen 5 cores and a large GPU with 20 RDNA 3.5 Workgroup Processors (WGPs). The sizeable iGPU makes Strix Halo particularly interesting because GPUs have high bandwidth requirements. Strix Halo tackles that with a 256-bit LPDDR5X-8000 setup combined with 32 MB of memory side cache. The latter is often referred to as Infinity Cache, or MALL (Memory Attached Last Level). I’ll refer to it as Infinity Cache for brevity.Infinity Cache has been around since RDNA2 in AMD’s discrete consumer GPU lineup, where it helped AMD hit high performance targets with lower DRAM bandwidth…
