Digit Technology Discussion Forum - View Single Post - Need a little help with graphic card choice

**topgear** · 21-05-2009, 05:36 AM

@ pandehz - can you mention the ampere ration of the +12V rail. If it's under 18A then you should get a new psu. Choose any one I've suggested above. If it's

Assuming your config :

The mobo consumes say 40W
The proc consumes say 80W
The rams consume say 10W
The ODD & HDD consumes say 15W
Cabinet fans consumes say 10W

So it's 155W & the gfx card will consume 80 ( HD 4770 ). So it's total 235W. Now all componets does not draw power only from the +12V rail. Say 8-10% of power will be drawn from the other rails. So the load the +12V rail has to deliver is say 215W

For your rig :
So it's recommended to get at least a psu which +12V rail is rated @ 18A. It will give you 216W. But it will be better if you can a psu which +12V ampere is rated higher than 18A. Say 20A will the best thing for your rig

21-05-2009, 05:36 AM	#9 (permalink)
topgear Fast 'N' Furious Join Date: Jul 2006 Location: Geek's Heaven Posts: 11,081	Re: Need a little help with graphic card choice @ pandehz - can you mention the ampere ration of the +12V rail. If it's under 18A then you should get a new psu. Choose any one I've suggested above. If it's Assuming your config : The mobo consumes say 40W The proc consumes say 80W The rams consume say 10W The ODD & HDD consumes say 15W Cabinet fans consumes say 10W So it's 155W & the gfx card will consume 80 ( HD 4770 ). So it's total 235W. Now all componets does not draw power only from the +12V rail. Say 8-10% of power will be drawn from the other rails. So the load the +12V rail has to deliver is say 215W For your rig : So it's recommended to get at least a psu which +12V rail is rated @ 18A. It will give you 216W. But it will be better if you can a psu which +12V ampere is rated higher than 18A. Say 20A will the best thing for your rig __________________ ToPsPeEeD = FaSt BuT StEaDy AMD Radeon HD 6850 OverClocked to 1 Ghz !!! Blog : http://topgeartopspeed.wordpress.com/ ---------------------------------------------------- Never buy viewsonic products : http://tinyurl.com/ykwx4oa Last edited by topgear; 21-05-2009 at 05:41 AM.