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Author Topic: XFX 5850 unstable at stock speed?!  (Read 2395 times)
nazgulnarsil
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May 29, 2011, 03:36:54 PM
 #21

wtf edit  Cry Angry Huh
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inh
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May 29, 2011, 04:24:12 PM
 #22

I get crappy clock speeds with my crappy power supplies. Check yours to make sure that's not the problem.
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May 29, 2011, 04:34:34 PM
 #23

450watts is what you draw from the wall then it has to be converted to dc power considerable power loss between the 2. Consider the following any usb deices and so forth take power another thing to look into is was there a beep when ur card failed? try over clocking till your computer shuts off. Listen to the beep patern from the mother board watch how many long and short bees then google it. Chance is that its lack of power could be other stuff thogh good luck

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nazgulnarsil
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May 29, 2011, 04:47:09 PM
 #24

nothing other than normal startup beep when I get a shutdown so far.

I guess I'll get a new 600+w PSU for the overhead.
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May 29, 2011, 08:32:41 PM
 #25

I've been fighting my xfx 5850 for two days finally I found a bios config that worked for me,  I dropped the memory down to 300 mhz, increase the fan to 100%  and was able to get it stable at 1000/300 with a 1.15 v core it does 391 mhash.   I couldnt get it stable without the voltage increase and my current temps are 47.5C(150cfm delta intake fans)  I couldnt get it much higher without it crashing but its been running for about 2 days now without an issue.   Check your voltages, sometimes the card will crash without a major temp, just depends on the card I imagine.

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nazgulnarsil
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May 30, 2011, 12:05:04 AM
 #26

you on the reference or non reference card?  reference has fan at the end, non reference has fan in the middle.
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May 30, 2011, 12:15:33 AM
 #27

I recommend a larger "Newer" power supply at least 600W for your setup.

then your aged 430W PSU gets hot and is being taxed 100% the voltage droop can cause the instability you are looking at

www.BitClockers.com

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