Quote from: daynomate on March 06, 2014, 08:57:50 AM

nvidia GTX 750 Ti - people are reporting 250khash from only 28W and 300khash from 38W

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

Quote

Just inserted them on my motherboard. Both cards do around 260 khash on cudaminer.

My system with 2 cards in idle: 75W.
Both cards full power: 200W.

So each cards around 62/63W and getting 260khash/s.

Edit: I tried to run it with 1 card:
My system with 1 card in idle: 62W.
1 card full power: 128W.

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

Quote from: flowerpots on March 18, 2014, 02:36:58 PM

Quote from: drakoin on March 15, 2014, 10:24:41 AM

Quote from: flowerpots on March 14, 2014, 03:45:29 PM

Quote from: drakoin on March 13, 2014, 04:52:58 PM

Quote from: daynomate on March 06, 2014, 08:57:50 AM

nvidia GTX 750 Ti - people are reporting 250khash from only 28W and 300khash from 38W

Wow, that would be 8-9 khash/Watt, so 2-3 times better than ATI. Almost as little as the GRID asics.
And the card costs less than 200 dollars? I have no experience with Nvidia cards, and the 750 Ti is not yet in the hardware comparison list. Does anyone actually know about such a list with also all the Watt consumption values?
Please post more such information. Thx.

I just ordered 2 of those GTX 750 Ti's. Will get them next week. If anyone wants to play with them on teamviewer: let me know!

I did read that 265 khash on 28W was possible with CudaMiner. Can't wait to put 5 of those in my rig! Grin

Cool. Looking forward to seeing your results!
Do you own a wattmeter? If not, get one now, they are cheap.
I don't trust the internal power sensors, please measure the Watt differences on the wall plug (between: no card, card disabled, card full power)

thx

Just inserted them on my motherboard. Both cards do around 260 khash on cudaminer.

My system with 2 cards in idle: 75W.
Both cards full power: 200W.

So each cards around 62/63W and getting 260khash/s.

Edit: I tried to run it with 1 card:
My system with 1 card in idle: 62W.
1 card full power: 128W.