64GB RAM won't speed up Lightroom exports much.

No, not really.

Batch exports are CPU and GPU-bound, not RAM-bound. Lightroom will use as much memory as you give it for caching previews and history, but when you hit “Export,” it’s the processor and graphics card doing the heavy lifting. 32GB is already plenty for handling 50MP RAW files in Lightroom — even with a big catalog open.

Where 64GB might help is if you’re simultaneously running Photoshop, Chrome with 40 tabs, and a virtual machine while exporting. Or if you’re editing massive panoramas or stacking layers. But for a straight batch export of 50MP RAW files, you won’t see a difference between 32GB and 64GB.

If your export times are slow, the bottleneck is almost certainly your CPU or your storage (slow hard drive vs. fast NVMe). A faster processor or a better GPU will cut export time in half. More RAM past 32GB is just overkill for Lightroom.

Save that money for a faster CPU or a good SSD instead.