ATI 4850 Overclocking

hero16

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Jun 7, 2009
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Hello guys so i have 2x 4850 stock cooler and i am wanting to get some more performance out of it now as for more info about it.I have Coolermaster Centurion 5 Case with 3x80 mm intake and 1x 120m outtake with standard Case tempereture of around 29 at all times processor goes around 30/35 idle about 50 in use Video cards which are 625Mhz 993 Memory standard i overclocked them to 640 1047 and because of that i installed one fan directly blowing cool air inside the cards and i manualiy incrased the fan speed to constant of 65% and it's keeping around 30/35 Idle and goes up to 50 55 in use.What i am asking here is if any of you could share any good insights on how to get a better performance out of this without spending alot of money sense i am buying a whole new setup curently.Any help will be greatly appreciated thanks in advance.
 

xsever

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Aug 15, 2008
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50-55 are very acceptable load temps for a 4850. Did you try overclocking higher? As long as you stay below 70-80, you are fine. So, try increasing your clocks as long as the card stays stable and below 70-80C.
 

hero16

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Yes it would support more clocks the problem is that i am worried about damaging the fan by using 70 80% fan speed it makes more noise but it reduces everything down by a significant ammount that's my main concern if i really go on to over locking it i would get Zalman water cooling and boost it up 50% but i don't whana spent alot of money on something like that cause i am buying a whole new RIG in a few weeks.
 

fatkid35

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May 6, 2009
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if you can live with the noise, go for it. you wont hurt the fans. they are designed to work at 100%, you can just make them slower by altering voltage. run them at the speed that gives you the best cooling for the amount of noise you can stand. what model 4850's do you have refrence single slot jobbies or the dual slot version. i have one of both and the single slot cooler requires at least 50% fan speed, sometimes more depending on temp in room, or the card gets nuclear hot. the xfx dual slot version i have i run at 35% and you can't hear it and it never goes over 57 deg.
 

hero16

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Well i have the Saphire stock cooler with one slot and yeah thanks for the answer i will be upgrading to a whole new rig top to buttom with 2x5850 asus once probabliy water cooler