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How big of a power supply would I need?

Last response: in Components
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July 27, 2008 8:08:01 PM

This is what i'm using right now

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

I just put a 9450 intel quad core in, 2x2gb ocz ram, visiontek 4870, also have 1 dvd-burner, 250gb hd, 74gb raptor in my system.

What would I need to get upto 4x2gb ram, another 4870 xfired?

850watt or higher, I believe 650w is too low for what i want to do eventually.

Since the 4870s seems to max out at 285w by itself under load.

Thanks!

More about : big power supply

July 27, 2008 9:38:41 PM

A good 750w PSU will be plenty, I recommend the PC Power and Cooling 750w, it is the absolute BEST 750w PSU when it comes to stability and quality.
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July 28, 2008 1:06:43 AM



jpbg said:
http://www.newegg.com/Product/Product.aspx?Item=N82E168... same as the pc power and cooling but cheaper^


TY! I did not know that psu calc existed. :D " target="_blank">

The_Blood_Raven said:
A good 750w PSU will be plenty, I recommend the PC Power and Cooling 750w, it is the absolute BEST 750w PSU when it comes to stability and quality.


jpbg said:
http://www.newegg.com/Product/Product.aspx?Item=N82E168... same as the pc power and cooling but cheaper^


TY! I did not know that psu calc existed. :D 
July 28, 2008 2:35:40 AM

do u plan to upgrade ur system in the future?
July 28, 2008 3:37:21 AM

invisik said:
do u plan to upgrade ur system in the future?

It just depends. If I added another 4870 and 4 more gbs of ram, i'd be maxing out my system. I want this rig to last around 2.5-3 years.

It depends on what the prices do of those 2 items.
July 28, 2008 3:45:19 AM

I've got the Zalman 750 (yes a 750 should be plenty)(I just hate the blue LED's), and I'm using a 9850 (high wattage) it runs my system fine. Just get a good quality PSU, and it should last you through a few builds.


P.S. Modular cabling is a plus
August 2, 2008 1:06:03 PM

1843761,7,55670 said:
Another, slightly different approach to PSU selection,
is to look at their graphs of efficiency vs. load.

Then, pick a point on that graph where efficiency
is highest: in that way, you'll minimize power
consumption in the long run.

Whenever in doubt, a good rule of thumb is
to utilize 50% of the rated capacity of any given PSU.

...

Interesting... when looking at the Corsair efficiency for a 650 W supply:
<http://www.corsairmicro.com/_images/charts/tx650w_effic...;

The 230 Vac curve is 2% higher than the 115 Vac... Perhaps I should consider running a 230 Vac line to my server to get the better efficiency! Has anyone else out there considered this?
August 2, 2008 6:14:05 PM

okay so i would suggest a good 600watt. im running a q6600 oc @ 3.0ghz and 2 gtx 260 in sli oc running on a 500w! just to be safe i would recommend 600w if ur gonna oc alot or if u add any extra hardrive, fans etc..
anything above 700w is just overkill.
!