The dual Hawaii Radeon R9 295 X2 with two >1GHz Hawaii GPU, 2× 512bit memory bus and watercooled GPU's (aircooler rams and VRMs) are hours from release. AMD even make a short video about it, to tease us:
Even hardcore nVidia fans have to admit, that this is first card that at reference model come with watercooling (or, more precisely, hybrid cooling), first AMD card featuring dual 512bit GPUs and also graphic card that bear most of the silicone - 876mm2.
Allegedly, the price should be about $1499, witch is half of the nVidia GTX Titan Z. Still a pretty pricey card, but we see who will be faster there. I would also LOVE to know, if the chips on the card has also crippled the DPFP_RATE, set to 1/4 for all the R9 290X cards. Because that seems to be the reason, why FirePro W9100 cards have amazing DP speeds with identical chips.
Pre-production testing versions of the Hawaii chips did not have these locks, according to people that tested them.