Power consumption of this?

WillyNelson

WillyNelson

WillyNelson

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Would anyone be able to give me a rough figure for the power consumption of the following...

HP compaq d530 desktop PC: P4 2.66GHz 504MB ram hooked up to a network with a standard ethernet card. On for 24 hours
HP1740 monitor in use 10hrs, standby 14hrs

I'm trying to show that asking users to switch their machines off at night, rather that leaving them on as 90% of them do, would give a decent saving. So worst case senarios if you please.

Thanks in advance.
 
Standby of the monitor is usually about 5W by the way so... 14*5=70Whrs or 0.07KWhrs for the 14hours of standby

The desktops would be roughly 250W so 14*250=3.5K so 3.5KWhrs during the time they're not used
 
WillyNelson said:
Would anyone be able to give me a rough figure for the power consumption of the following...

HP compaq d530 desktop PC: P4 2.66GHz 504MB ram hooked up to a network with a standard ethernet card. On for 24 hours
HP1740 monitor in use 10hrs, standby 14hrs

I'm trying to show that asking users to switch their machines off at night, rather that leaving them on as 90% of them do, would give a decent saving. So worst case senarios if you please.

Thanks in advance.
Click to expand...

Go to B&Q and buy a plug in mains power and energy monitor. Only cost's £10-15. You plug it into the wall socket and then plug the pc into that and it tells you how many watts, volts, amps, volt-amps, Hz and kw/h. You will be able to show them the difference between pc switched on and pc switched off then.
 
Nefarious said:
Standby of the monitor is usually about 5W by the way so... 14*5=70Whrs or 0.07KWhrs for the 14hours of standby

The desktops would be roughly 250W so 14*250=3.5K so 3.5KWhrs during the time they're not used
Click to expand...

Thanks. If I could have done it myself I wouldn't have asked. I'm a beancounter not IT :)

Any idea what it would be under a 'normal' load, or would it be roughly the same as standby?
 
The maths I could've done. How much power the machine consumed was what I needed help with.

Now to make it look like a material saving.
 
I'm not convinced that "because the man on OcUK said so" really counts in the beancounter world? However I'd doubt that the systems will use anywhere close to 250w when idling. In fact plugging it into a PSU calculator gives me 142w with a Prescott 2.6ghz (notoriously power hungry and hot), 1 stick of DDR2 Ram, 1x 7200rpm hard drive, 1x DVD-Rom and 1x NIC - I've assumed the graphics card is onboard so didn't bother to put one in.

I've found that calculator tends to overestimate in the past for some cases but as a rough guideline it isn't too bad, when the system is idling it will use even less so unless you run anti-virus/defragmenting tools/system updates overnight you might want to assume a baseline figure of about 100-120w for the PC and base your calculations on that.
 
I would recommend you get a wattage monitoring doodad from bnq. Even if you set the pcs to go into suspend / sleep mode after say 1 hour of being idle. That would give some better savings.
 
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