Would I see a benefit?

[Enquiries]

I currently have a Synology DS220j with 2x Seagate Ironwolf 4TB drives - 5900 rpm, 64Mb cache. I'm beginning to get a bit frustrated with the length of time it takes the NAS to handle big file transfers to it (e.g. 100 image files @ typically 50MB per file). How likely would I be to see any perceived improvement in file handling time by upgrading to Ironwolf Pro drives, which spin faster and have more cache?

The alternative would much more expensive, of course - a 4-bay NAS with drives configured as RAID 5...