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Power Supply Recommendation

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April 13, 2009 8:54:04 PM

I have a crappy 750watt power supply and I have an Intel i7 920 at 3.6, 6gb ram, 3 hard drives, Antec 1200, 4870 x2, and don't think that my power supply can handle much more cause it is crappy as I said. I was looking at power supplies and the Corsair HX 850 caught my attention, I don't care about cables and I want to keep the price under $170 dollars just wondering if that is a good power supply or if anyone has any recommendations?
April 13, 2009 8:58:51 PM

the Corsair 850tx is a +1. Go for it its a single rail which is good in most psu's.

As you look into the 1100w + then look at split 12v rails.
April 13, 2009 9:11:24 PM

^^Cant go wrong

If no means to CF or anything, the Corsair 750 could pull that off easily
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a b ) Power supply
April 13, 2009 9:12:08 PM

fullmetall said:
the Corsair 850tx is a +1. Go for it its a single rail which is good in most psu's.

As you look into the 1100w + then look at split 12v rails.


The number of rails does not matter for a good quality PSU.
April 13, 2009 9:16:05 PM

I was possibly thinking of a tri-crossfire with the 4870x2 and a 4870 in the future, think it would power that? I forgot to bring that up.
a b ) Power supply
April 13, 2009 9:17:47 PM

heavy_metal said:
I was possibly thinking of a tri-crossfire with the 4870x2 and a 4870 in the future, think it would power that? I forgot to bring that up.


For that I would say HX1000.
April 13, 2009 9:30:39 PM

A high amperage, 850 or 1000 for that
April 14, 2009 1:45:13 AM

Actually the rails do matter.. if its a high wattage and the amperage says 25a 25a 25a 25a. Doesn't mean its getting 100a altogether. 25a - 25a will be 25a on one rail and probably 18a on the other.

Since its high wattage, most the amperage is there but, it commercials 22a -22a 20a 25a yada yada, not all rails will run those amps.
a b ) Power supply
April 14, 2009 3:41:27 AM

fullmetall said:
Actually the rails do matter.. if its a high wattage and the amperage says 25a 25a 25a 25a. Doesn't mean its getting 100a altogether. 25a - 25a will be 25a on one rail and probably 18a on the other.

Since its high wattage, most the amperage is there but, it commercials 22a -22a 20a 25a yada yada, not all rails will run those amps.


The number of rails does not matter on any modern good quality PSU. If you need 100A then you should be buying a higher wattage PSU which has well over 100A available. Switching to a single rail does not mean there are more amps available, just that they are on a single rail.
April 15, 2009 2:44:18 PM

Which can cause a outrage on higher wattage psu's thats why most psu's 1000w+ are split. Single rail can send as many amperes it wants to into a component, which could overload. When it's split, its limited its components so that does not happen on a high wattage.
a b ) Power supply
April 15, 2009 6:46:05 PM

fullmetall said:
Which can cause a outrage on higher wattage psu's thats why most psu's 1000w+ are split. Single rail can send as many amperes it wants to into a component, which could overload. When it's split, its limited its components so that does not happen on a high wattage.


How would only sending 20A through a component be better than 100A? It wouldn't make any difference.
April 15, 2009 7:24:48 PM

"OverLoad"

= electricity pains.

you wont get the full 100a anyways on split rails is what im trying to get at. It's like every one is adding 25a x4 12vrails = 100a. No, it doesn't work like that. Only partial will get the full amperes and the others will be limited. You wont get a graphics card to hit over 20a anyways so split rails on higher wattage is a better deal. "Unless" you have 5 to 6 rails, every rail will not be an equal amount of amperes, mabye some, "mabye" some 4 12v rails on a higher wattage.
April 15, 2009 8:40:35 PM

Can you guys stop arguing about this. I bought the TX850 power supply.
a b ) Power supply
April 15, 2009 9:58:26 PM

heavy_metal said:
Can you guys stop arguing about this. I bought the TX850 power supply.


Relax and enjoy your new PSU. :) 
a b ) Power supply
April 16, 2009 5:06:42 AM

fullmetall said:
"OverLoad"

= electricity pains.

That's what over-voltage protection and over-current protection is for, not split rails.
April 16, 2009 11:59:43 AM

You just go with what you know and ill stick with what i know. Have a good day.
April 16, 2009 1:35:08 PM

I agree with Fullmetall.
a b ) Power supply
April 17, 2009 3:33:34 AM

fullmetall said:
You just go with what you know and ill stick with what i know. Have a good day.


I know that split rails were introduced as a safety measure for the PSU, not the components. A 20A rail is perfectly capable of frying a CPU, RAM or mobo as well as most video cards; many high wattage PSUs have rails with 25A+.

And a good day to you as well. :) 
!