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Help power consumption latest PC

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July 21, 2010 1:17:44 AM

Please help me calculate power consumption of following configuration individually at full load (and at Idle)

i7 930 (2.8Ghz)
Crucial Ballistix Tracer 1600Ghz (6GB kit)
ATI HD 5770 (Single Card)
Gigabyte x58a ud3r rev 2.0
4x sata hdd (normal 3ghs)
2 dvd-rw
4-usb devices (1 bluetooth,2 ext hdd,1 joystick)

I just need the max power consumption of each part.
a b ) Power supply
July 21, 2010 1:54:33 AM

what do you mean? the power (watts) if the psu you need? or the total power usage at the wall?

well i would say a 550w corsair would be sufficient.
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July 21, 2010 2:14:49 AM

the total power usage.... at the wall...

I already have a Cooler Master Xtreme Plus 650W (rs-650-pcar-e3) bought 6 mon back... i think it shld be enough unless i'm not using crossfire or any card in SLI mode
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a b ) Power supply
July 21, 2010 2:25:11 AM

anupam_luv said:
the total power usage.... at the wall...

Well, that would vary depending on what power supply you have. Some are 70% efficient and some are an amazing 90% efficient.

I'm going to say your system will never draw more than 300-400W total from the power supply.
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a b ) Power supply
July 21, 2010 2:30:01 AM

anupam_luv said:
I just need the max power consumption of each part.

the i7 TDP is 125W. this is not power consumption, but close enough.
the 5770 TDP is listed in ati specs.
1 HDD wont draw more than about 10W.
i dunno about the rest but not much by comparison
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July 21, 2010 2:48:41 AM

enzo matrix said:
the i7 TDP is 125W. this is not power consumption, but close enough.
the 5770 TDP is listed in ati specs.
1 HDD wont draw more than about 10W.
i dunno about the rest but not much by comparison


Thanks...

ATI HD 5770 pow consumption I found at http://www.legitreviews.com/article/1105/14/ is 270 at load ....

So, I think I must stick to my Cooler Master Xtreme Plus 650W (rs-650-pcar-e3) ... as Im not using 2 ati cards and also http://extreme.outervision.com/psucalculatorlite.jsp suggest my pc at 90% load will never gonna cross 550-600W mark....
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July 21, 2010 2:55:20 AM

Can u also suggest how much power does the ddr3 1600ghz draws (In triple channel)... also my ballistix tracer has leds on it ...will draw extra power
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a b ) Power supply
July 21, 2010 3:00:00 AM

leds use <1w
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July 21, 2010 10:27:23 AM

shovenose said:
leds use <1w


But wht abt ddr3 1600mhz ram .... esp crucial ballistix tracer ..... cant find any detail on their site
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Best solution

a c 144 ) Power supply
July 21, 2010 1:01:09 PM

anupam_luv said:

ATI HD 5770 pow consumption I found at http://www.legitreviews.com/article/1105/14/ is 270 at load ....

That is total system power for whatever they were testing. A 5770 by itself will not pull more than 100 watts and usually less.

I measured one of my old systems and 2 GB of DDR2 RAM at 2.1 volts pulled 20 watts. So 6 GB of DDR3 at 1.65 volts should pull significantly less than 60 watts and that is from the 3.3 volt rail.

Like Enzo said, while TDP is not the same as power consumption, it makes a good estimate.

And LED's use an insignificant amount of power (figure 1.5 volts X .025 amps per LED).
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July 21, 2010 1:42:53 PM

jsc said:
That is total system power for whatever they were testing. A 5770 by itself will not pull more than 100 watts and usually less.

I measured one of my old systems and 2 GB of DDR2 RAM at 2.1 volts pulled 20 watts. So 6 GB of DDR3 at 1.65 volts should pull significantly less than 60 watts and that is from the 3.3 volt rail.

Like Enzo said, while TDP is not the same as power consumption, it makes a good estimate.

And LED's use an insignificant amount of power (figure 1.5 volts X .025 amps per LED).


Oh thanks ... thts a crucial info for me... so would recommend me to replace my current PSU which is cooler master Xtreme power plus 650W (rs-650-pcar-e3) or should I go with the same?
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a b ) Power supply
July 21, 2010 3:37:35 PM

if you care very much go for a gold-efficiency psu.
look at jonnyguru.com for reviews and suggestions. imo its the best psu site. then just head over to newegg.com and buy it :p 
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July 24, 2010 11:30:42 PM

Best answer selected by anupam_luv.
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