Basically I'm installing a Samsung 840 EVO 128gb SSD today, but my motherboard doesn't support SATA 3, only SATA 2. I also have a PCI-E USB 3.0 card installed as the board doesn't support that either (Curse you ASUS! :P).
Now by reading the specs, I can see that Sata 2 is 3.0Gb/s (Yeah I know, gigabits, not gigabytes :P) and USB 3.0 is 5Gb/s, meaning USB 3.0 is faster, but would I run into any issues trying to boot my OS from an SSD connected via USB 3.0? (I have a SATA to USB 3.0 adapter, I'd have to run it from behind my Motherboard tray to the back of the outside of the case, but shouldn't be too hard)
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bad idea. older mobo doesnt support usb 3.0 natively. so they will only work after OS load its usb 3.0 specific driver
fyi, sata 2 is still super good at around 300 MBps sata 3 is 550 MBps
Are you sure? I've booted from USB 3 before with a USB installation drive