AMD Radeon R9 290X Specifications:
11 CUs (compute units)
44 SMIDs (11 per CU)
2,816 stream processors
176 TMUs (Texture Mapping Units)
44 ROPs (Raster Operating Units)
4GB GDDR5 VRAM (6GB models will come later) — according to Softpedia
5+1+1 phase design (5 Phase Core and 1 Phase memory)
2 x DVI ports
1 x HDMI
1 x DisplayPort
8-Pin plus 6-Pin power connectors (300W TDP)

http://videocardz.com/46006/amd-rade...rmed-costs-600