The EVGA GTX SSC 970 definitely saves power vs EVGA SC GTX 570

[wingman99]

I did some testing on my own rig and found that at idle GTX 970 saves 13.3 watts, running crysis 3 GTX 970 saves 42 watts sweet.

Done with i5 2500k GTX 570, SSD 840 evo PC only

1.8 Watt power off

2.5 watt sleep mode

80 watt CPu idle 1.6 GHz

167 watt cpu linx 4.0 GHz

333 watt CPU crysis 3 42 FPS

Done with i5 2500k GTX 970, SSD 850 evo PC only

1.8 watt power off

2.5 watt sleep mode

66.7 watt CPu idle 1.6 GHz

84.7 watt cpu idle 4.0GHz CIE,c3/c6,EIST off.

154 watt cpu linx 4.0 GHz

291 watt CPU crysis 3 60 FPS

 

[EarthDog]

Now, see how much money that actually saves you...If your electricity costs as much as mine, 10c /kW hour...

42W * .1000 = .042 cents per hour. If you game 4 hours per day, that will save you around .17 cents (not 17 cents, .17). Idle savings.... .013 cents per hour. If you idle all day... .31 cents (again, not 31 cents .31 cents /day) or ~10 cents per month or about $1.20 per year.

Assuming my math is right of course.

There is a reason why we mention its only worth it for distributed platform users (SETI, [email protected], Bitcoin mining, etc) to step up to a higher tier efficiency PSU. You really never make up the difference in cost over the life of the PSU with a typical use scenario (think idle 24/7 gaming 4-6 hours per day).

 

[wingman99]

Thanks for the response I did not look at it that way, I have in the past. To add to what you are saying all these power savings like PC's, CRT to monitors, also starting to change my 60watt 800 lumens light bulbs for LED 8.5 watt 800 lumens does not do a hill of beans in the winter we have electric heat anyway, even if we did not have electric heat your residence is heated only little by PC,s TV,s light bulbs.

I just looked and it pays to use more power in the winter where I live . First 750 kWH $0.090467 Over 750 kWH $0.078467

42W X 4 Hour Gaming per day = 168 watt-hours per day x 365 = 61320 watt-hours per year/1000=61.32 kWh per year X $0.09 cent per kWh= $5.52 a year

13.3W X 6 Hour per day idle = 79.8 watt-hours per day x 365 = 29127 watt-hours per year/1000=29.127kWh per year X $0.09 cent per kWh= $2.62 a year

A average total savings of $8.10 a year savings except winter cold.