Cooler Master's MWE v2 450 and Corsair's CV450 are good options at the same price point of ~3500. I've been using both models in 8c/16t systems with cpu-intensive, non-gaming workloads for about three years now.
The MWEv2 230v-only models have the highest efficiency of any 450W model in the Indian market at 89% average efficiency at 50% load and 88% at 20% load. For a 90W load (20%) this means a power draw of 102W at the wall versus 106W for the Corsair CV450 which has an efficiency of <85% at 20% load and 86% at 50% load.
Antec's VP450P is a decent budget option at ~2000, it has an average efficiency of <87% at 50% load and >85% efficiency at 20% load. Same with Deepcool's PF450D and EVGA's 450BR at higher price points.