FOUND A FIX for Ati 4850 crashing

CyberJunk

CyberJunk

Supreme [H]ardness
Joined
Nov 13, 2005
Messages
4,247
I have a 4850 and this week my card kept shutting off and the screen going black when playing games. I even returned my card to bestbuy and got another one and it did the same thing even tried the drivers on the disc and hotfixes and that did not do it. I read something interesting on the ati forums regarding the fan speed %. I had my fan speed % set to 65% and was experience crashing. I tried to set the fan speed to 100% and then 80% I was thinking maybe it was a heat issue. But it was causing the card to crash more and even started crashing 10 mins being in the desktop ! and i was experiencing gray and white lined patterns when it was crashing. What is happening is that the Fan on the 4850 is sucking too much power and you can't run the fan % much more than 40% . I have mine set to 30%
the fan is running at 2100rpms and Guess what NO CRASHES ! I have not crashed since.
So maybe this is a fix ?
 
I'd say maybe it's an issue with your psu but your psu is better than mine. Accelero S1 Rev. 2 cooler at directron for $24 would be my solution. I hate the stock cooler on the 4850, it's quite lame.
 
i dunno my psu isn't that old though
and its 700watts tough power supposdly a good quality psu
and never really had an issue with it
and i upgraded from a 8800GTX which i didn't have any issues like this before.

but i think its kinda funny though that the fan sucks alot of power
i mean at 65% is up over 6000rpms !!

here is a link were i found this info
http://forums.amd.com/game/messageview.cfm?catid=260&threadid=97704&enterthread=y
 
Very strange issue.. I mean the fan can't draw that much compared to the GPU and other components..just a few watts at most. In that case, it has got to be an issue with the fan header on the actual card.

I've just left the fan on Auto.. when running Furmark it does ramp up..not sure how fast, probably about 50-60%.. No crashes so far.
 
Maybe this is the real reason ATI set the fans to run at 13%? Its run reliably for me with the fan at 55%
 
At the risk of sounding fanboyish, I found a solution to my ATI card crashing 5 years ago.

Sent my ATI card back to Newegg, bought an Nvidia card and haven't had a problem since.
 
Don't know, granted your system is more than mine but I've got a smaller PSU and don't have any issues.
I run the fan at 100% while gaming and at 50% the rest of the time.
 
Ditto zick, I'm running my 4850 on an FSP 400W with about 32 amps on the 12v rails combined. I just can't believe a fan would be drawing that much power.
 
the fan running at anything over 50% drives me bonkers... i tried setting both my cards at 100% for a laugh the other day and it sounded like my wife was vacuuming, unbelieveable lol.

you woulda thought they'd at least give the cards a nice cooler these days
 
the new drivers are so much more stable !

i have my fan set to 30% no problems
 
Left my fan at default and it works great, fan runs around 26% at the desktop and idle temps are 77-78 and load temps are 80-81. Card has a lifetime warranty and ATi engineers say the board can handle it.
 
"the fan running at anything over 50% drives me bonkers... i tried setting both my cards at 100% for a laugh the other day and it sounded like my wife was vacuuming, unbelieveable lol"

So what you could do now is say you are going to vacuum and just crank your cards to 100% and play games. She'll hear them and think "what a good man" :)
 
but i think its kinda funny though that the fan sucks alot of power
i mean at 65% is up over 6000rpms !!
Click to expand...

According to one user, GPU-Z reports the fan speed incorrectly, and 100% is actually just over 3000 RPM. I don't know which it is - it might very well be 8000RPMs because the fan is *very* loud at 100%, much louder than my AMD CPU fan @ 100%=~3300RPM.
 
just to comment on that issue...

Ive seen that problem happen only on ATI cards for some reason, I really never found the cause when it happened with my x1900xtx...

Like the other guy said, not trying to be fanboyish but my solution was switching to nvidia...
 
I still don't understand why you have to switch to nVidia because something runs at a certain temp? If the hardware can handle it who cares? And give me something better than "heat kills electronics" because...

1. We know that, but so do the people who design the stuff and they know more about MBTFand lifespan than you do. Yes, they will err in the direction of their own self-interest, but only to the point and not creating a bad buzz about all of their products. I recall many people on these boards spouting that you couldn't get 3 years from a Prescott core and I have many at work running just fine.

2. Odds are good if you hang around here much you will have upgraded before the warranty runs out. Never mind lifetime warranties that many of these products sport. I'm aware waiting for a warranty swap is annoying, but so is reading how people are pissed they can't find a way to fix something that they really don't know is broken.
 
Well, it is fanboish, and completely irrelevant to the discussion.

The cards work fine at the stock settings. They would have set the default value higher if there was an issue with heat.
 
Maybe some of the fans arent up to spec and introduce electrical noise into the system.
The faster they run, the higher the noise frequency.
?

The cure is simple and has already been mentioned.
Use an S1 :)
 
I get dumped to the desktop occasionally while playing TF2 - I thought that sometimes it's because I got kicked due to someone having a reserved spot and the app doesn't know what to do - appcrash - my fan is set at 45% fixed, so I'll give your suggestion a try and put it down to 40% - although last I looked it was up around 80 degrees when playing games.
 
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