Question about Compaq Presario Notebook

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Compaq presario notebook computer

Can the compaq presario notebook be used overseas at 240 wattage?
I noticed on the plug that is says 100-240 with 50-60 hz.
Thanks for your help
Shirley

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Yes it can.

All notebooks that have dual voltage power supplies can be used worldwide. With the correct physical adapter plug, you need not worry about plugging it in, it will automatically detect the 240v three phase power used in the UK and configure itself to supply your laptop with the usual amount of power automatically.

Posted on May 28, 2008

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How can I find out how many watts my System Model DA238A-ABA 6450NX NA910 use in 1 hour? (compaq prisario)


Compaq Presario 6450NX Desktop PC?

http://h10025.www1.hp.com/ewfrf/wc/document?docname=bpb11683&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=240121

Power Supply - 200 Watts

That is the supposed Maximum Wattage the computer will use per hour.

Variables come in to play, however;

1) Back when the computer was made, the Power Supply manufacturers were 'fudging' the real maximum rated Wattage.

True ratings were more like 60 to 70 percent, of what was actually stated.

Divide 200 by ten; take it times;
6 for 60 percent. 120 Watts
7 for 70 percent. 140 Watts

So, the Actual Maximum Rate Wattage, could be as little as 120 Watts, or a little more than a 100 Watt light bulb.

2) Second variable is what is the computer being used for?
Surfing the internet? About 100 Watts.

Playing an intensive game, (Yeah right. Not on that computer), or using an intensive program?
Then, you may be using the Maximum rated Wattage,
120 to 140 Watts.

So,........the hourly wattage rating, could be as low as 100 Watts per hour, or perhaps up to 120 to 140 watts per hour.

Also include the power used by the monitor.
If you do not have the specifications of the monitor, see if you can look them up online.

My HP 2009M uses 47 Watts, (2 Watts when in Sleep Mode),

http://www.newegg.com/Product/Product.aspx?Item=N82E16824176112

My other monitor I use (Dual monitors), is an RCA 26 inch HDTV,
(RCA L26HD31)

Uses 82 Watts,

http://reviews.cnet.com/flat-panel-tvs/rca-l26hd31/4507-6482_7-33346932.html

(And the power supply for my computer is 500 Watts.
Hmmm,............no wonder the little wheel spins so fast in my electric meter! lol!)

Add the two together to get a basic conclusion, of what Wattage per Hour your computer system is using.
Don't forget to include printer/scanner/fax machine/copier, WHEN being used.

For additional questions please post in a Comment.

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joecoolvette

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1 Answer

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uses 49 Watts in operating mode, 2 watts in sleep mode.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00916924&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=3351967

The Compaq Presario SR5410F Desktop PC, has a 250 Watt power supply. (Maximum wattage rating )

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Theoretically.

Back in the day when this computer was made, Power Supply manufacturers were 'fudging' a bit on the truth.

(HP has their Power Supply's made by another company.
Bestec, HiPro, and Delta, are three of them )

Actual wattage is more like 60 to 70 percent, of what is stated.
250 divided by 10 = 25.
25 times 6 = 150 (60 percent)
25 times 7 = 175 (70 percent)

Your Power Supply's actual maximum rated wattage, may be as low as 150 Watts!

Going with the Power Supply produces a maximum of 250 Watts;

If you are playing an intense game, or have several programs running at once, you MAY reach using 250 Watts.

Just surfing the internet? About 100 Watts.

Desktop PC plus Monitor:
1) Surfing Internet: 149 Watts, or let's just say - 150 Watts

2) Computer is maxed out running hard?
249 Watts, or let's just say 300 Watts.

Voltage times Amperage = Wattage
Wattage divided by Voltage = Amperage

Number 1 above? About the power it takes to use a 100 Watt light bulb, and a 50 Watt light bulb. (Incandescent)

Number 2? About the power it takes to run three 100 Watt light bulbs.
(Incandescent)

Regards,
joecoolvette

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Hi there.
You really have to use a transformer of that rating if that is the unit's requirement. You can use a higher wattage but definitely, do not use a lower wattage rating.
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