I'd like to see proof of 250kh/s on < 30 watts.  Pic (or reliable source) or it didnt happen.




How long did you run the 750's? What temps are they posting? Did you undervolt at all?  If you didnt undervolt, test it our and let us know the kh/watt jump.

The low wattage (assuming stock) is nice, but the price of the card seems a bit high ($159 on newegg) right now.  Sure at 62 watts and 260kh the 4.2 kh/watt is nice, but with 6GPU's being the most supported by any consumer mobo at the moment I'm not excited.

I'm running 6 mildly undervolted (1.100v) 270's on one rig and they're also pushing 4+kh/watt (440 kh/s on 108 to 109 watts each).  From what I've read they can push 445kh/s rock solid on 1.000v which would likely drop them to under 100watts = almost 4.5 kh/watt!!

Even with the slightly less kh/watt on my rig you'd need more than 10 750 ti's to get the same hash rate.  So you're saving a fractional amount of electricity, but to get the same rate you'll need another CPU, mobo, ram , risers, psu (which could total almost $200). 

Can anyone argue that R9 270's are not the sweetest performance per dollar card?  Sub $200 investment for over 4kh/watt at around 450kh/s rock solid.

* Side note, the Asus R9 270's I got were at the price drop and averaged $179 per (thanks to open box finds) and will likely re-sell for around or over $200 in a few months when I upgrade.


- VR