We just finished logging 48 hours of CapFrameX hardware telemetry comparing standard 32MB L3 desktop CPUs paired with ultra-tight DDR5-8000 against 96MB stacked 3D V-Cache processors running DDR5-6000 CL28.
Key takeaway from our lab: average FPS numbers in synthetic GPU benchmarks hide the truth. In simulation-heavy and BVH-heavy workloads like Escape from Tarkov (Streets of Tarkov), Baldur's Gate 3 (Act 3 Lower City), Assetto Corsa Competizione (30-car rain grid), and Factorio: Space Age megabases, fitting the entire entity state array inside 96MB of L3 cache cuts DRAM round-trip stalls so drastically that 0.1% low frame times improve by +38% to +46%.
If you already run an X3D processor, manually tuning secondary memory timings—specifically raising tREFI to 65535 and dropping tRFC to ~480 at a 1:1 UCLK=MCLK ratio—eliminates the periodic DRAM refresh micro-hitches when L3 spills do occur. Drop your ZenTimings screenshots and 1% low numbers below!