Originally Posted by kalston
Ever since I started doing that my Windows installs never lost their "fresh" feeling (even when keeping the same install for years)
Same here. It's because Windows/NTFS is quite silly about where it sticks stuff. Things like the USN journal, system volume information, randomly written files, etc. may be tossed 50%+ through the partition. Fill the whole drive with one partition, and odds are a lot of data will land somewhere towards the end. That means long slow seeks and lower sequential speeds. To top it off, it's noisier and may wear out quicker. In my own no-stopwatch hardly-scientific personal testing, I found that it made things like Java take about 60-80% longer to install/update. (Yikes!) That's mostly because the system restore point takes longer to create.
Originally Posted by m4paws
Originally Posted by rui-no-onna
True but leaving 10-20% of the SSD unpartitioned as over provisioned space helps maintain SSD performance and life.
Interesting. So on my 256gb SSD, I would make the partition 225gb, and then leave the rest unpartitioned?
People say 10%, but it's actually a certain amount in gigabytes depending on workload. For light desktop use, probably 16GB left unpartitioned would be fine. Most SSDs can function perfectly well with only a few extra GBs, though it does vary from controller to controller. If you ever do write intense stuff (like video encoding a 40GB file) you may want to increase the amount of unpartitioned space left in reserve to at least that size.
Fun fact - doing the same stuff gets harder and harder on our drives over time. Games get larger and more read/write intense, programs get larger, and operating systems get larger. It's not huge, but I'm sure year after year our drives are writing at least 5-10% more for the same workload. A few years back Firefox was 40MB... looks like now it's about 100MB, and my profile has ballooned to about 700MB. Lots of that is cache that's continually checked/updated. Although it's unlikely that the extra writes could kill my drives any time soon, it does mean their algorithms are getting a slightly harder workout.
Oh - updated the first post with an HDTune bench that's newer.Edited by Kramy - 7/28/13 at 7:03pm