Almost what I need, but I really want output format of 60 FPS as when I'm watching videos on YouTube 1 @ 60FPS In/out 2 @ 30 FPS In/out, despite the fact that YouTube only supports 30 FPS the 60 FPS video feels/looks a lot smoother.
I know of an SSHD (SSD/HDD Hybrid) that reads/writes SSD speed onto an HDD. Would that perhaps be a solution (While using FRAPS instead of on a capture card)?
an SSD/HDD hybrid shouldn't work in this scenario. the cache is only small (a few 10s of GB at the most) and designed to hold small system files that are traditionally slow to open because of HDD's slow seek times. as Fraps files are huge they would fill up the SSD cache within a matter of minutes and then it would go back to slow hard drive speeds.
in terms of data speed I've measured on average 80MB/s to my hard drive (separate new 7200RPM hdd just for fraps) when recording fraps at 1080p (locked at 50 or 60FPS), so a decent (SEPARATE) 7200rpm drive should be ok. SSDs are not absolutely necessary for fraps files as there are plenty of people out there using an additional HDD without problems. 120FPS or higher resolutions, sure you'll need some beefier storage but there are people who run it on an average 7200RPM drive with no complaints.