Sorry, forgot to look at your signature. Was that there before? ;-)
Is the FX-8350 OC'ed? The card OC'ed?
For what it's worth, my FX-8350 (stock) and R9-290X (stock) was 8151:
http://www.3dmark.com/fs/2721613
Since the GTX 780 is slightly lower performance than the R9-290X, that may not be all that bad... if everything is at stock.