Yeah, I figured. I saw this and just kinda lol'd a bit~50% larger, I did the math earlier in the post. It's a bit larger than an SFX-L unit as well volumetrically (~10%).
I am amazed how you can make something this powerful in such a small form factor. Now I wonder why it is so difficult for big companies to make 750+ W SFX PSUs, if HDPLEX can make this....