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Help with PSU wattage

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February 1, 2009 7:58:02 AM

Kinda stuck can't figure out wattage. Gonna be running an e8400 with an 4870 or a 260 gtx, 4gb of memory all on a ep45-ud3r mobo. All very simple but fast. Now ive never oc'd before so i dont know how to judge on how much i need to increase to compensate for the psu. Thinking of a mild oc most people report 4ghz as a very reachable mark. id like a tiny bit of wiggle room to up the gpu or jump to quad in the future so watcha think. Right now im looking at 550w-650w.... thanks

More about : psu wattage

a c 243 ) Power supply
February 1, 2009 9:09:58 AM

550-650 would be more than sufficient to allow for overclocking and some upgrading. Just buy a good quality unit from Corsair, PCP&C or Antec.
a c 248 ) Power supply
February 1, 2009 9:25:58 AM

+1 what DellUser1 said.
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February 1, 2009 11:21:57 AM

at the higher end of 650w is that overkill? or a future proofing? I mean i plan on have a good psu for a couple of years and not quite interested in crossfire or sli wait for those boards to come down in price.
a c 243 ) Power supply
February 1, 2009 12:09:26 PM

550 would be more than enough, but check prices, it's only $15 dollars to go from the Corsair 550 to the 650. If that $15 will help to upgrade another component then do the 550 , but if budget is not an issue more power won't hurt.
a b ) Power supply
February 1, 2009 2:53:06 PM

Good quality 425W+ with 2 PCI-e connectors would be plenty.
a c 243 ) Power supply
February 1, 2009 4:08:11 PM

theAnimal said:
Good quality 425W+ with 2 PCI-e connectors would be plenty.

Yes it would, but it would cost as much or more than a 550 or 650.
February 1, 2009 5:08:43 PM

ya i always found that so odd from like $75-$99 who can get a huge range of watt psu...
a b ) Power supply
February 1, 2009 8:29:51 PM

delluser1 said:
Yes it would, but it would cost as much or more than a 550 or 650.


PC P&C Silencer 500W is only $55.
February 1, 2009 8:36:26 PM

theAnimal said:
PC P&C Silencer 500W is only $55.


Awesome and you believe 500 watts is enough to run my setup?
a b ) Power supply
February 1, 2009 8:43:01 PM

mattyboyywonder said:
Awesome and you believe 500 watts is enough to run my setup?


Definitely.
a c 243 ) Power supply
February 1, 2009 9:06:02 PM

theAnimal said:
PC P&C Silencer 500W is only $55.

Yes it is, I didn't go searching to find anything earlier , I just know that there are a couple of 430 watt units with dual 6 pin connectors that are around $100, therefore just as expensive as a 550 or 650 watt Corsair.
The Silencer 500 is an excellent choice, I picked up the 610 for $65 AR,just a couple days ago ( free 4g thumb drive with it actually made it cost less than what the 500 is/was going for )
a c 140 ) Power supply
February 2, 2009 5:52:13 PM

Your psu needs are nominal, overclocking does not add much to the requirements.
What you DO need is a quality unit that will deliver it's power cleanly, within spec, at high temperatures, over time.
A psu is not the place to economize.
For a GTX260, you need a unit that has at least two pci 6 pin connectors. A quality unit will be able to deliver power to them, and then some.
It is also good to have enough psu wattage so the unit is not always operating at it's rated maximum. A psu operating outside of the middle third of it's range will be inefficient, costing you more in the long run. If you anticipate upgrading to SLI(which I don't much like) then your requirements will be more.

The corsair 650 and PC P&C silencer610 mentioned earlier are outstanding units for the price.
February 3, 2009 5:26:28 AM

geofelt said:

For a GTX260, you need a unit that has at least two pci 6 pin connectors.


Yeah... You know... Unless he uses an adapter like everyone else.
a b ) Power supply
February 3, 2009 5:30:23 AM

daskrabbe said:
Yeah... You know... Unless he uses an adapter like everyone else.


If you're buying a new PSU, what would be the point in getting one that did not have the required connectors?
a c 140 ) Power supply
February 3, 2009 12:38:19 PM

daskrabbe said:
Yeah... You know... Unless he uses an adapter like everyone else.

It is a simplification. What I mean is, that if a psu has the power to deliver the standard power(75w I think) to each of the pci connectors, then it will be sufficient for the whole system. Part of the problem comes from cheap psu's that do not deliver their advertised power at other than room temperature which is not realistic. A cheap psu will also have high wattage numbers, but not deliver them to the 12v rails where it is needed. If a psu requires an adapter, it might work, but it is an indicator of a less capable psu.
February 3, 2009 5:31:05 PM

I would make sure it has active PFC and 80+ efficiency.

The Antec Neo 550 watt is 85% efficient at $99 has two 6 pin connectors:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The Antec True Power Trio 550 watt is 85% efficiency for $89.

If you want to future proof one more card upgrade past the 4870, then why not one with two 6+2 connectors?

Corsair 650 watt $79 after rebate, but it's "only" 80+ certified:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Antec Neo 650 for $109:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Never skimp on the power supply. I've mostly owned Antecs, but Corsair is good too.






a b ) Power supply
February 3, 2009 6:01:40 PM

yipsl said:
I would make sure it has active PFC and 80+ efficiency.

The Antec Neo 550 watt is 85% efficient at $99 has two 6 pin connectors:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The Antec True Power Trio 550 watt is 85% efficiency for $89.

If you want to future proof one more card upgrade past the 4870, then why not one with two 6+2 connectors?

Corsair 650 watt $79 after rebate, but it's "only" 80+ certified:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Antec Neo 650 for $109:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Never skimp on the power supply. I've mostly owned Antecs, but Corsair is good too.


The Corsair is much better than those Antecs; True Power Trio & Neo are only okay quality.
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