Cheap SSDs are getting inexpensive enough that unless you need a shit load of capacity it's not that much of a stretch to go without an HDD. Games aren't much important, you can get the 240GB and just install the games you play the most~mostly online games like PUBG/Dota, or open world games like GTA V/Fallout 4, as they tend to benefit the most from being installed in an SSD, no need to put the whole library there. I have a couple of 512TB Samsung 860EVOs and I tested i/o speeds using Black Magic Disk Speed Test. For Houdini, the Crucial P5 2TB SSD had a score of 2525.
1tb ssd vs 2tb ssd reddit We chose 2TB for our upgrade scenarios because if you are.