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Powercolor hd 4850 512 on delta 250 watt PSU !

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May 3, 2010 11:02:33 AM

pentium d 3ghz( o.c to 3.8ghz ),
asus p5kpl-am,
transcend 2gb dd2 800,
powercolor hd 4850 512 ddr3,
delta 250 watt (peak 300 watt) psu, samsung 250gb hard drive.

i don't no how is it possible to run hd 4850 on 250 watt psu even with overclocked cpu without any problem. with full load cpu temp around 70 and gpu temp around 80. i have played crysis warhead, dirt2, bad company2 with high settings ( 1024x748 ) and got 22-40 fps and i am playing them for 6 days( average 6 hours per day)and there is no problem i have faced. can anyone explain me how is it possible or there any problem?
a b B Homebuilt system
May 3, 2010 1:56:57 PM

You will need about 350W under normal load for HD4850 according to my rough calculation.
So...it could a little less than 350W and could be a little more.
The PSU rating is also that way, perhaps it could also bear 110% or even 120%peak power rating which is sufficient at the moment.
The only problem is that you are running in somewhere 100% PSU load rating.
Your PSU life will shortened significantly and if it is broken...your whole system is at risk.
Better to buy a new one with higher power rating pronto!
May 5, 2010 6:25:18 AM

guanyu210379 said:
You will need about 350W under normal load for HD4850 according to my rough calculation.
So...it could a little less than 350W and could be a little more.
The PSU rating is also that way, perhaps it could also bear 110% or even 120%peak power rating which is sufficient at the moment.
The only problem is that you are running in somewhere 100% PSU load rating.
Your PSU life will shortened significantly and if it is broken...your whole system is at risk.
Better to buy a new one with higher power rating pronto!



my 250 watt PSU has 19A on +12V1 and +12V2 rails and max output 300 watt ( peak)
!