Originally Posted by Blue Dragon
it mostly depends on the size of the virtual memory on the drive, recycling bin, etc
I think windows defaults 25% of a small drive for virtual memory, so that's why that # pops out. My 120Gb has 30Gb virtual mem. doubt it ever uses it, but found it bottle-necking when benchmarking (I had around 8Gb free...)
Nope, not really. I reckon the 20-25% came from manufacturer recommendations. I'm pretty sure I read a whitepaper from Intel recommending somewhere around those number to use for over provisioning on their SSDs. Samsung, I think, recommends using 10-15% OP in Magician.
This article is a very good read showing why it's good to keep free space on the SSD. I reckon the concept works the same whether it's static OP (unpartitioned space) or dynamic OP (free space inside partition via TRIM/GC)
Originally Posted by wdgann
I don't understand what is "format your SSD with 10-20GB as free space rather than partitioned "
When formatting, say, a 120GB SSD, don't format it for the whole 120GB (~112GiB), instead format it for say 100GiB and leave the rest of the space unpartitioned/unallocated.