Fantasy One is a GPU made by chinese company Innosilicon, based on the licensed GPU from Imagination Technologies (known by their PowerVR GPU's).
wccftech.com
hothardware.com
Yet - still nothing is known about sales, or it's real performance.

Chinese GPU Maker, Innosilicon, Unveils Fantasy One Chip For Discrete Graphics Cards - Up To 32 GB GDDR6X Memory, Dual-GPU Solutions & 5 TFLOPs
Chinese GPU maker, Innosilicon, has unveiled their first discrete chip, the Fantasy One, which will be featured in a range of graphics cards.


PowerVR Returns? Innosilicon Debuts Fantasy One GPUs Bearing Imagination Tech Genetics
Who expected Imagination Technologies to show up on the desktop again? We didn't see it coming but it sure is interesting.
Yet - still nothing is known about sales, or it's real performance.