Scratch disk

[Cornfield]

I just added a 2Tb hybrid drive (ssd and spinning drive) to my PC dedicated as a full time scratch disk.  The performance boost to Premier Pro and Photoshop is more than I was expecting.  Wish I could get similar benefit for Lightroom.

[Joe Towner]

Go SSD and it's even greater - once you get larger than the cache (8gb) you see diminished returns from the SSHD.

[albytastic]

Go SSD and it's even greater - once you get larger than the cache (8gb) you see diminished returns from the SSHD.

Have you considered adding something like the Samsung 970 NVME on a PCIe card?

Even on my Z800 with only PCIe2 I get 1.8GB/Sec and 1.7GB/sec seq read and write.

And transferring from any SSD to that is very fast, even USB3 can go at around 200MB/Sec and I can easily transfer 20GB file from my Ramdrive to the NVME in about 20 secs.

The only thing you must do with them is attach a heatsink otherwise thermal throttling can occur.

[Cornfield]

Thanks for the replies.

I had the hybrid drive spare and an empty drive slot available.  My MB has to M.2 slots with one used as the C drive using a Samsung 970 NVME.  I'll add another Samsung NVME to the empty M.2 slot.  I don't have a spare PCIe slot.

[digitaldog]

LR doesn't use a scratch disk like Photoshop so it's not usual to hear what you report. Might help in Library. Will do little in Develop.

[Cornfield]

"Wish I could get similar benefit for Lightroom"

I know LR does not use a scratch disk.