Hashrates of mine, some overclocked:
Visiontek 5850 1GB: 180h/s (rlly OCd)
MSI R 7770 PMD1GD5 1GB: 180h/s
Sapphire HD 5830 1GB: 230 - 250h/s
Gigabyte 6850 GV-R685D5-1GD 1GB: 235h/s
Gigabyte R9 270x 4GB: 445h/s
Club R9 270x 2GB: 458h/s
XFX R9 390 8GB: 772h/s
If you want more details ask.
Soon I'll update with wattage info..
5850 gives me 230 with no OC. whats your settings? OC'd should put out 250 or even more,depending on how far u push it.
Efficiency is another thing tho..