I saw this on Anandtech forums:
http://forums.anandtech.com/showpost.php?p=37088956&postcount=145
Supposed 3DMark score of R9 380X/R9 390X. It could be a fake.
Just had a close look at this
To get that graphics score the card would have to be 88% faster than one of my 290Xs @1000/1250 stock, this is not going to happen.

That score most likely is a doctored 290P CF score.



290X just two base 7950's.....