Determine CPU-GPU performance bottleneck ratio at 4K 2160p Ultra HD, calculate 1-10ms microsecond transient power spikes, and determine safe ATX 3.0 power supply capacity.
At 4K 2160p Ultra HD, the workload shifts balance. High resolutions (4K) place 90%+ burden on GPU shaders, minimizing CPU single-thread constraints, while 1080p exposes CPU clock bottlenecks.
High-performance GPUs experience microsecond transient power spikes reaching 1.8x to 2.2x sustained TDP when heavy compute workloads kick in, tripping older ATX 2.x power supplies.
The Intel ATX 3.0 standard mandates that power supplies absorb 200% excursion spikes for 100 microseconds, preventing blackouts on high-wattage components.