Should i upgrade to 7850?

hitec16

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I current have a MSI GTX460 1GB cyclone installed on my PC I want to know if it is worth upgrading to amd7850?
I wud also like to ask how much max power consumption difference is there between gtx460 and 7850 as 460 requires 2x6pin and 7850 req only 1x6pin connector.
 

hitec16

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From ur links i can conclude that a GTX460 max power consumption is around 175W and that of 7850 is 101W.But what i dont understand is why some reviewers state power consumption of 7850 around 250W.(read the last line in the link ) http://www.tweaktown.com/reviews/4594/amd_radeon_hd_7850_2gb_reference_video_card_review/index17.html

and also tomshardware states GTX460 max power to be around 260Watts ? (http://www.tomshardware.com/reviews/geforce-gtx-460-gf104-fermi,2684-13.html)
 

shamsmu

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those are the power consumption of the entire system(mobo+cpu+gpu+hdd+fans) not just the gpu. That should give you an indication of how big your psu needs to be to power up the entire thing.
 

hitec16

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So u mean that a high end system along with GTX460 will consume only 260W ?? my amd cpu has TDP of 95W and GTX460 is 170W =265W and that doesnt include any fans RAM or HDD?

checkout the system on the link (http://www.tweaktown.com/reviews/4594/amd_radeon_hd_7850_2gb_reference_video_card_review/index3.html)
using this system they conclude 7850 consumes a bit over 250W ? i find it hard to believe.I am confused how they calculate power consumption.
 

shamsmu

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it means you need to have that amount of wattage on the 12v rail of your psu which is generally far less than the actual psu wattage. Watts = Amps x Volts

so 265w=Ax12, A=22. So you need at least 22A on the 12v rail of the psu. The actual wattage of the psu means nothing in this instance.
 

babarv2

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it have an amd 7850 and its worth buying .... :) but i'll suggest that you wait till november and same money and ultimately buy 7970 or gtx 580.. if u want to buy now go with 7850