Anonymous asked:
So far testing Iray with the 4090 is not yielding the expected performance enhancements when compared to other rendering engines (versus previous flagship 3090ti). Other engines tend to double (or more) performance with a 4090, while Iray is maybe 70% faster at best, sometimes just 60% faster. Is this as good as the 4090 can get with Iray? Or can an updated Iray with the latest CUDA support improve performance? On that note, when can we expect the next version of Iray SDK?
The next Iray SDK (2022.1.0 final) is due beginning of december. Some Ada/Lovelace performance improvements may still be possible for that one, but from our own tests we already actually see an average ~2x improvement comparing various scenes on a 4090 vs a 3090. Will post benchmark results soonish, mileage varies heavily on scene types.