The Corsair hx620W is listed on SLI zone under the category of "Power Supplies for GPUs that support NVIDIA SLI® technology".
It is not listed under the category of "Power Supplies for GPUs that support NVIDIA SLI® and Hybrid SLI technology."
So, I'm going to say no. I'll forward this question to Nvidia and see what they say.
What's the exact model you have? HX620W right?
And what is your motherboard make and model?
I noticed the HX1000W was on the Hybrid supported list. But nothing else from Corsair.
I'll let you know.