I went with both an SSD and an older, old-fashioned HDD.
The DAZ Studio software is on the SSD. However, my Daz Library is on the HDD.
Well, and I also ported the HDD from my old computer, as well as 2 external HDD's
It's a pretty hard and clear cut seperation for me: software
may go on the SSD, if I use it regularly, but less often used programs as well as games go on the HDD. *All* data goes on the HDD.
Specs:
motherboard: MSi B450-A Pro
CPU: ryzen 5 2600x
GPU: RTX 2070
SSD: Samsung Evo 960, 500GB
HDD: Something generic 4TB + all the old HDDs, totalling about 9 TB.
Memory: 8GB (only 1 stick, the other stick died few days after I got it, can't be bothered with getting a guarantee replacement, the system works decent, and I already planned to replace the two sticks with 2x16 GB somewhere this fall before I even ordered it, so the 16GB was and still is temporary anyway)
Power Supply: 700 Watt (I'm currently using about 70% of it, so still room for adding some extra or more powerful hardware)
The thing cost me just under 1600 european dollars, assembly done by a hobby assembler, few "big" stores sell something like that at that price, their pricetag for this would generally start around 2499.
A neat gadget that I also ported from my old rig: a Hot Swap tray. It basically allows me to quickly replace an internal HDD from the outside, though in my cheap version I do have to switch off the computer. Still, it's a lot more convenient than having to open the case, mess with connecting wires, etc. And it allows me to have "extra" HDDs for data I use very infrequently, or for backup purposes, etc.
With some smart shopping, it shouldn't be difficult to assemble a rig with a newer Ryzen 7 3xxx CPU and an RTX2070 "super" or even 2080Ti costing less than 2500 eurodollars. Which is a lot less than the ~4,000 that the "mediamarkt" would charge for it (they don't, they'd charge 3,500, but put a lot of lower grade components in, like a slower SSD, a less reliable and bottlenecking PSU that constantly performs at 95% of its wattage, a 1080Ti, but still "accidentally" list it between the 2080Ti rigs, be VERY careful, I see that last practice a LOT at electronic stores!)