My RTX 5090 Renders 5x Faster. Here’s Why I Still Use a Cheap 4060 in the render fleet.

Summary: I generate image-to-video (i2v) clips for a software project on a small consumer level GPU fleet: a flagship RTX 5090 and a cheap, always on RTX 4060. On a controlled raw render test the 5090 is about 5x faster per clip. But in a real overnight run where the two cards carried very different loads, their completion rates were only about 1.6x apart, and the 4060 finished a 74-clip batch in…