Retard moment - drive usable?

greebo3

Distinguished
Jan 24, 2012
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I was installing a couple of hard drives onto a server at the same time as I was installing a adata850w psu into another system. I accidentally used the adata 6pin sata cable and plugged it into my corsair hx620's pci-e 6 pin plug.

When I powered up the system, puffs of smoke came out of the hard drive. Did I push too much power through the hard drives' board, or were the hard drives defective already?
I am assuming the former because unlikely to be two bad hdds, and since I plugged in the wrong cable, well...

Are these two drives beyond repair now?