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Windows 7: Power Supply

09 Dec 2009   #11
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

bob:

Yeah, you are right; this link

Actual Power Consumption And Current Requirements - Review Tom's Hardware : How Much Power Does Your Graphics Card Need?

says about 57 watts for the card alone at load.

So that drops the required PS for this poster even lower.


My System SpecsSystem Spec
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09 Dec 2009   #12
Dwarf

Windows 8.1 Pro RTM x64
 
 

You also need to be aware that the rating of many PSUs is the absolute maximum that they can deliver and that is only for short bursts. The continuous operational power rating is more important, and you should ensure that the load of your system does not exceed this value. A rule of thumb which I use is to add up power requirements of each component in your system, add 10% to that and then add 10% to the total. Look for a PSU that can supply at least that amount of power.
My System SpecsSystem Spec
09 Dec 2009   #13
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

Here is a list of energy efficient PSUs between 400 and 500 watts and under $75.

Newegg.com - Computer Hardware,Computer Cases,Power Supplies,$50 - $75,80 PLUS Certified,401 - 500W

That's plenty for your system. Your video card maxes out at 57 watts (under 5 amps). The CPU is rated at 65 watts. Everything else will be considerably less.

The 1 TB drive you are getting may use no more watts than your existing drive, but minimal in any case.

Stick with a major brand:

Corsair, FSP, Seasonic. maybe OCZ.

Off that list, I would go with the $64.99 Corsair. If you get the rebate, it's $10 less than that.

Don't agonize over the additional details. Just make sure it will fit into your case and has the appropriate number of connectors.

You have a low to midrange system, so any PSU should have enough connectors. You may want to consider a modular PSU to minimize clutter---you can disconnect the unused cables.
My System SpecsSystem Spec
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09 Dec 2009   #14
Nikolay

Windows 7 Ultimate x64 | Windows XP Pro x86 | Windows Vista Ultimate x86
 
 

My System SpecsSystem Spec
09 Dec 2009   #15
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

Why did you choose that? Random choice?

You don't need anywhere near 700 watts and Raidmax PSUs are undoubtedly made by someone else--an unknown pedigree. Why deal with unknowns?

It's probably no accident it is marked down from $130.
My System SpecsSystem Spec
09 Dec 2009   #16
Nikolay

Windows 7 Ultimate x64 | Windows XP Pro x86 | Windows Vista Ultimate x86
 
 

I chose the raidmax because it had 700W and it seemed pretty decent for the price.

I'm really considering this one you recommended because of all the good reviews about it Newegg.com - CORSAIR CMPSU-450VX 450W ATX12V V2.2 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply - Power Supplies

Where would "1 x 12V(4+4Pin)" go into?
My System SpecsSystem Spec
09 Dec 2009   #17
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

That 4 pin probably connects to the motherboard near the CPU to provide extra power.

PSU manufacturers think buyers will figure that more watts is necessarily better. Stereo manufacturers do the same thing. What's the first thing you see mentioned in advertising for either--a number. Trouble is, the wattage numbers are frequently exaggerated and not measured according to known standards.

You can be sure Newegg is still making money off that 700 watt Raidmax at 60 bucks.

It's unlikely your PC will ever break 250 or 300 watts as presently configured. So, 400 to 500 gives you plenty of headroom and puts you in the middle of the efficiency curve.

All you can do beyond that is buy a good brand from a reliable dealer and hope it doesn't break--that can happen regardless of your choice.
My System SpecsSystem Spec
09 Dec 2009   #18
Nikolay

Windows 7 Ultimate x64 | Windows XP Pro x86 | Windows Vista Ultimate x86
 
 

Quote:
That 4 pin probably connects to the motherboard near the CPU to provide extra power.
I couldn't find any 4 pin connectors on my motherboard when I installed my CPU. Is there like an adapter where I could plug in the 4 pin head and plug the other end into a 3 pin connector?
My System SpecsSystem Spec
09 Dec 2009   #19
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

You have an old motherboard and relatively low powered machine.

If it doesn't have that connector on the mobo, that means you don't have to use that cable from the power supply.

The connector I am talking about looks like this.



So, don't worry about an adapter. Some cables on the PSU you will need and some you won't.


Attached Images
 
My System SpecsSystem Spec
09 Dec 2009   #20
Nikolay

Windows 7 Ultimate x64 | Windows XP Pro x86 | Windows Vista Ultimate x86
 
 

Oh, I was thinking of something different. I think I have those available.
My System SpecsSystem Spec
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 Power Supply




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