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Windows 7: power supply upgrade question

19 Nov 2009   #1
james62755

windows 7 ultimate 64bit
 
 
power supply upgrade question

i have a Compaq Presario SR1630NX Desktop PC and i want to put in graphic card but i requires me to upgrade my power supply i currently have this model running my power an ATX-300-12Z Rev:.BD 300W would a 550W 3X SATA PS for BESTEC ATX-300-12Z PSU Rev.: BC fit in good and be safe on my system?


My System SpecsSystem Spec
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20 Nov 2009   #2
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

Let me guess. Did you get those "requirements" from the graphics card manufacturer?

The requirements are nearly always overestimated. The card manufacturers want to protect themselves in case a user buys a mediocre 500 watt power supply that can only supply 300 clean and reliable watts. Power supplies differ widely in quality. The claimed wattage tells you very little. They figure a lousy 500 watt unit might supply enough when a high quality 350 would be fine. Since the manufacturers can't know you are going to buy a good unit, they overestimate.

What graphics card are you thinking of?

Bestec is not a known brand. I would guess it is made by someone else and used by HP.

But it may be adequate, depending on what graphics card you want to use.

ATX power supplies should have all of the same external dimensions and will "fit". They vary in quality, power output, and the type and number of connectors. Which you will need depends on the equipment to be connected--hard drives, DVD drives, graphics cards, etc.
My System SpecsSystem Spec
20 Nov 2009   #3
Adrian

 

Quote   Quote: Originally Posted by ignatzatsonic View Post
Let me guess. Did you get those "requirements" from the graphics card manufacturer?

The requirements are nearly always overestimated. The card manufacturers want to protect themselves in case a user buys a mediocre 500 watt power supply that can only supply 300 clean and reliable watts. Power supplies differ widely in quality. The claimed wattage tells you very little. They figure a lousy 500 watt unit might supply enough when a high quality 350 would be fine. Since the manufacturers can't know you are going to buy a good unit, they overestimate.

What graphics card are you thinking of?

Bestec is not a known brand. I would guess it is made by someone else and used by HP.

But it may be adequate, depending on what graphics card you want to use.

ATX power supplies should have all of the same external dimensions and will "fit". They vary in quality, power output, and the type and number of connectors. Which you will need depends on the equipment to be connected--hard drives, DVD drives, graphics cards, etc.
In my experience as a builder its always better to overestimate power usage so that you are never underpowered as the OP now finds out!
Yes, 550 watts is more than adequate and should cost you between $50-$90
My System SpecsSystem Spec
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20 Nov 2009   #4
johnhoh

Win7 pro x64
 
 

Quote:
In my experience as a builder its always better to overestimate power usage so that you are never underpowered as the OP now finds out!
exactly
My System SpecsSystem Spec
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 power supply upgrade question




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