this is the whole system wattage right? no way a 470 uses 200watt
they are capped at around 150

Hi guys. Its me with the weird R9 280X doing 205 Sol/s

I know that my wattage seems weird and they are.

I changed my wattage to 150W (my highest measurement) on the comparison page:
https://en.wikibooks.org/wiki/ZCash_mining_GPU_Comparison

I tryed to check my wattage even further and i used 2 different methods this time.

1. method is a high-grade wattage-meter sitting between my PC and the power plug.
The meter is a Telco Sensors ST2300A aprooved by one of the biggest power-companys in Denmark (SEAS-NVE).

2. Method was calculating the wattage from the data showing in GPU-Z (Voltage multiplyed by Amps)

And here is my results:

WALL:
Idle: 155 - 160 W
Mining: 290 - 310 W
135 - 150 W
(I'm only using my R9 280X)

GPU-Z:
VDDC: 1.133 - 1.146 V
VDDC Current: 83 - 104 A
94 - 119 W

It's not 200W. RX 470 is doing around 5-10W in idle so if you take 230W and subtract 80W (mobo + psu + other stuff) it leaves you at 150W for GPU at the wall, so GPU is actually using around 130W if we assume that PSU has 85% efficiency.

Yesterday tested undervolting on my Giga RX 470 Gaming G1 4Gb.

On stock (1230/1650):
Idle - 90 W/wall , Mining - 216-230 W/wall ( 75avg  W in GPU-Z).

Undervolted -90mW in AB stock clocks :
Indle - 90W/wall ( didnt measured , I gues it was same), Mining - 190-200 W/wall ( 52avg W in GPU-Z)

So its about 30 W less power usage . Anyone got same results ?

Hashrate was the same.