After reading Joel Ayuba's new hardware breakdown on GDDR7 PAM3 memory bandwidth vs GPU L2 cache scaling, I ran a 60-minute CapFrameX telemetry comparison across Cyberpunk 2077 (Dogtown market), Alan Wake 2 (Cauldron Lake forest), and Indiana Jones and the Great Circle at 4K with DLSS Quality + Path Tracing enabled.
Here is what stood out in the 1% and 0.1% low frame times:
1. At 1440p, a 64MB L2 cache keeps cache hit rates around 68%, masking narrower memory buses effectively.
2. At 2160p (4K) with Path Tracing + Ray Reconstruction + Frame Generation, the BVH acceleration structures and G-Buffer working sets spill past L2 cache capacity continuously. Cards pushing 896+ GB/s over a full 256-bit/384-bit GDDR7 bus held 0.1% lows 31% tighter during fast 180-degree camera flicks than 192-bit cards with similar shader TFLOPS.