undefined | Better HN

0 pointsnitrogen9y ago0 comments

Do the power consumption numbers cancel out the up-front price advantage?

0 comments

RX480 consumes less power then the GTX1080 so they'd amplify the initial price advantage.

Is that total power, or power per GFLOP?

Are you seriously asking me to do division for you? Do you own a calculator, cellphone or computer? Or are you actually that helpless?

AMD RX 480 has 5.8TFLOPS @$200 ($37/TFLOP) @231Watt Peak (2.5GFLOPS/Watt)

Nvidia GTX1080 8.9TFLOPS @$600 ($67/TFLOP) @318Watt Peak (2.8GFLOPS/Watt)

See Furmark benchmark for wattage values [1]

Typical KW-H in the US $0.12KW-H [2]. So the delta-cost of GTX1080 vs RX480 will be mitigated by GFLOPS/Watt efficiency savings in 4 years, 4 months. Which on a typical 2, 3, or even 4 year hardware replacement cycle the extra cost will NEVER be re-couped.

[1] http://www.anandtech.com/show/10325/the-nvidia-geforce-gtx-1... for load wattage numbers

[2] http://www.npr.org/sections/money/2011/10/27/141766341/the-p...

1 more reply

j / k navigate · click thread line to collapse