You don't need to save your music or other media on SSD. The most speed comes from programs and operating system saved on SSD. It can be read lightning fast on this, which makes startup time of applications and Windows fast. SSDs tend to be getting slower and fail, if it have many write operations (after a long time of using it this way). Also, there should be around 15-25% free space (at least 10% free), so the fragmentation does not get worse (this is true for all storage under Windows).
As an example for a 1tb SSD
1 TB SSD Samsung EVO costs $344.99
You could get for that price HD from Western Digital and SSD from Samsung
500 GB SSD Samsung EVO costs $165.98
+
1 TB HD WD Blue Caviar costs $49.49
or even
4 TB HD WD Red Pro costs $210.00
Prices got from
>
http://pcpartpicker.com/parts/internal-hard-drive/#xcx=0&t=0&R=5,4&m=32
>
http://pcpartpicker.com/parts/internal-hard-drive/#xcx=0&R=5,4&m=38&t=7200
I am running multiple SSD and HD for multiple operating systems (Linux and Windows, both single SSD + HD). They are both fast on booting. With optimizations on settings, faster SSD and single OS solutions, I could go from 35 sec (includes password typing and loading of browser and email program) to maybe 15 sec on load time. Would it be worth? I don't think so. My Windows is on a cheap and early SSD with 64 GB from Crucial, which I used it around 4 years long or so. And it still works.