Bulldozer's Power Draw (in pictures)

[Riek]

OK I dont have my same board since its being rma'd from having a bad memory slot but I just ran my kilowatt meter for the setup im on now.

This is a full closed computer with 4 hardrives,4 fans,a pump and a gtx 560 video card.Im also using wireless usb network too.

total system idle power at 1.5 volts is 130watts just ran intelburn test at 5ghz and the kilowatt meter never went over 293 watts

and thats for total system power with the psu not being 100% efficient and eating some wattage.

indeed psu isn't 100% efficient. so the 130W number is relatively higher than the 293W number because efficiency of the psu rises when the powerdraw increases.

So basically from idle to load you overclocked cpu consumes 163W extra. So add the idle pwr consumption and add the small efficiency gain and you get close to 190-200W for the cpu alone.

I suppose the intelburn supports avx and you run win7sp1?

 

[grkM3]

just lowered ram voltage from 1.65 to 1.55 and clocked it down from 2133 to 1333 and lowered the cpu voltage from 1.520 to 1.496 and the highest I saw on the wall outlet was 286 watt. it crashed after 15 seconds but it was enough to see what it will pull at full load

to be honest I have all my fans at the lowest rpm but they are still doing there thing

 

[grkM3]

indeed psu isn't 100% efficient. so the 130W number is relatively higher than the 293W number because efficiency of the psu rises when the powerdraw increases.

So basically from idle to load you overclocked cpu consumes 163W extra. So add the idle pwr consumption and add the small efficiency gain and you get close to 190-200W for the cpu alone.

I suppose the intelburn supports avx and you run win7sp1?

What do you mean?I am measuring at the wall so how can the cpu load get higher?

the psu is wasting watts to convert 120v AC to 12v etc and is also making heat and has its own fan also.

so If you measure at the cpu alone it will be less because you are not measuring any other variable that pulls watts from the total system.

This argument started a few months ago when people were laughing at me saying the sandy will eat over 300 watts alone at 5 ghz and I showed them sites that had under 250 for total system power and overclocked to 4.6 and my setup was using about 130-140 watts in software monitoring the watts for just the cpu.

looks like I was pretty close to the 140 watts going by what I just saw on the kilowatt meter

 

[Soulkeeper]

best get the fans blowing to keep that blowdozer cool 🙂

 

[AtenRa]

indeed psu isn't 100% efficient. so the 130W number is relatively higher than the 293W number because efficiency of the psu rises when the powerdraw increases.

So basically from idle to load you overclocked cpu consumes 163W extra. So add the idle pwr consumption and add the small efficiency gain and you get close to 190-200W for the cpu alone.

I suppose the intelburn supports avx and you run win7sp1?

130W measured at the wall in Idle state means the PSU draws 130W but the system needs less. Thats because PSU is not 100% efficient.

If the PSU has higher efficiency at a higher load, for example when CPU at full speed, then 293W measured at the wall would be closer to what the system really needs.

 

[grkM3]

130W measured at the wall in Idle state means the PSU draws 130W but the system needs less. Thats because PSU is not 100% efficient.

If the PSU has higher efficiency at a higher load, for example when CPU at full speed, then 293W measured at the wall would be closer to what the system really needs.

Gotcha.I just reran with itb using the latest version and had to up the volts to make 5 passes.

I ended up hitting 315-320 watts on 8 threads with avx and had to up the voltage to 1.530 loaded to make it stable.