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PC Forum PC Help Forum » Hardware » PSU and Overheating Issues » [Answered] video cards for 400w PSU

PSU and Overheating Issues - video cards for 400w PSU posted in the Hardware forums; Hi guys I'm new here and this is my first post. I'm need regarding my PSU , here we go: I was looking to buy a 9800gt, I currently have ...

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  #1  
Old 10-07-2008
GER GER is offline
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Default video cards for 400w PSU
Hi guys I'm new here and this is my first post. I'm need regarding my PSU, here we go:
I was looking to buy a 9800gt, I currently have the GMA950 (i know, it sucks big time), but then I got informed with the issue that it needs a 400w PSU as a minimun. My PSU is 400w but the 12v is quite low its amperage is 12A. here's what it says on the cover ATX 400W P4
+5V=>30 A
+12V=>12 A
-5v=>0.5 A
-12V=>0.8 A
+3.3V=>26 A
5VSB=>2 A
I don't know how many rails there is, can it be known from the above? anyways the question that I'm interested in is what card can I run error-free with this PSU; my system is:

Dual core 3.0Ghz (930 Presler)
2 sticks 512mb 667 ddr2 (thisnking of upgarding to 2 sticks of 1gb)
Intel 945Gz motherboard (gma950 and Realtek audio on board)
LG 20x DVD-RW
120Gb maxtor HHD
2 side fanes 12mm

So what cards can I get for this PSU, i guess there's no way to handle the 9800gt, can it handle the radeon 3850 or 4850? Please note that I don't care about high resolutions for gaming, 1280*600 is more than enough for me considerning my 15" monitor.

Any help would be greatly appreciated.


  #2  
Old 10-07-2008
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Default Re: video cards for 400w PSU
Hello and welcome to PCHelpForum.

We have a great Tech Team who will help you with your questions.

I have marked your thread as "Open" in readyness for the team.

JB.


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Old 10-10-2008
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Default Re: video cards for 400w PSU
Come on guys, please help me out !
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Old 10-10-2008
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Default Re: video cards for 400w PSU
Nvida 8000 series.I belive the GT 9600 needs 2x6 pin power supply.


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Old 10-13-2008
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Default Re: video cards for 400w PSU
Hey Guys,

@ Ger,

My most sincere apologies for the delay in getting to your quesiton.
I will PM the hardware gurus in order to get you a definitive answer.

Keep an eye out for their posts.

TTFN

LGW
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Old 10-13-2008
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Default Re: video cards for 400w PSU
One suggestion is to use this calculator to get an idea of what is needed Newegg - Power Supply Calculator

Personally I feel that one shouldn't underestimate the importance of the power supply and ideally you should allow for some leeway when it comes to basic requirements.

I run a 9800GTX+ card and with my hardware configuration my PSU requirement worked out to being 600W with a Quad core CPU at the heart.

With that calculator you have the ability to experiment with different options and hopefully get and idea of where you are at.


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ih8bills agrees: I Agree -- too high better than too low
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Old 10-13-2008
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Default Re: video cards for 400w PSU
The power-supply is the foundation of your PC.
You would not build a house on a weak foundation-- I assume ?
That PSU might keep up--but I would want guarantees.
A weak PSU can cause sudden reboots/poor performance/damaged components -- if it fails outright
I suspect that is a "came-with-the-case" generic CPU.

A good brand-- like Silverstone/ PC power & cooling/Enermax-- even with the same watts-- will outperform it...
when you remove the old one-- just feel the weight difference-- due to better components used.
I usually take what a calc recommends-- and add 100 watts for "headroom" & future upgrades and go with that.

All the fancy processors/cards/RAM in the world do NO good --if you can't run them reliably...


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