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5870 vapor-x hates stock OC settings

Harty

Harty

Harty

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Joined
8 Apr 2010
Posts
44
Location
Edinburgh
ok so after i finally get a stable OC on my cpu im still getting problems in games where the screen freezes and the sound loops forcing a hard reset and i figured out the problem! my 5870 vapor-x's in crossfire hate the settings that they came at (870mhz core and 1250mhz memory) set them down to reference clocks of 850mhz core and 1200mhz memory and i was able to play bad company 2 for 2 hours without flickering which normally would happen half an hour in. i've tried upping the volts in msi afterburner and even flashed the bios to the latest one by sapphire and even tried upping the volts in RBE to 1.275v core and 1.25v vtt core and it still artifacts and flickers at its normal settings.

clean install of windows 7 ultimate 64bit and running cat. 10.6 tried flashing to a different manufacturer bios but blue screens on windows logo.

is there anything else i can try? i dont want to send them back under rma or anything as pointless as 25 and 50mhz

any help would be greatly appreciated

thanks
 
my cf 5870 vapours (rev2) stock is 875/1250 they work fine, but up the clocks at all and well, they dont like it much and crash frequently
10.6 wouldnt work for me (bsod) so im @ 10.4
i presume you have the rev1 (black pcb) as your able to tweak the voltage?
 
Now that you mention it I did set the memory to 1200mhz and the core to 900mhz and it survived furmark without flicker for the 5-10 minutes I had it running... Could it be the memory causing it to die out? If so is there anyway I can fix it?

Thanks
 
It could be, the fact that you increased GPU voltage and it didn't help any would suggest perhaps it's memory related.

ATI cards have a reputation of not liking the memory being overclocked, if I recall correctly the 48x0 series had a lot of problems there was a bunch of pre-overclocked cards that would have flickering problems unless the memory was underclocked back to reference levels.

You could just have a dodgy card though it might be worth testing each of them separately at 870/1250 to ensure they're both stable.
 
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Ran 900mhz core and 1200mhz memory and the driver crashed and recovered 5 minutes into furmark and that includes upped volts without crossfire. It seems they are only happy running reference 5870 clocks which messes up the powerplay aswell but at least I can play my games happily... Anyone got any ideas that might help? Tried going down to 10.4 swell because read of instability with 10.5/6 but no change flickered like crazy with it's meant to be stock settings...

Any help greatly appreciated

Thanks
 
The other version is at 850/1200 if you wish to try those clocks....it shouldn't crash at all then unless there's a driver issue somewhere where it's not been installed correctly.

I wouldn't use 10.6 for CF 5870s as there seems to be complaints about them for CF, most tend to use 10.4s for this and 10.6 for single cards.
 
I now do use 850mhz core and 1200mhz memory as since it's what stock 5870's run at mine works perfect with these clocks but it's frustrating how an oc card like the vapor-x can't handle it's own stock oc clocks... Maybe I should just flash the bios with reference clocks and vapor-x fan settings and just be happy with the extra cooling... I used 10.4s briefly today and running it's stock clocks it was still flickering like crazy after about 7 minutes of furmark and I ended it incase it crashed out on me so I just put 10.6's back on... The clocks are my only gripe with this and catalysts so I just keep it updated

Thanks
 
I know it's annoying that it doesn't run at those clocks but trust me it will be very little difference fps-wise and besides you will not notice it anyway.

If you are bothered a lot about it, send it back and ask for the other version.(i remember a guy here having same issue as you, he did this and all was fine.I also have the 850/1200 version, zero issues and stunning card.)
 
Na I'm not gonna send them back now... Had them since November just figured it was an unstable oc since I bought a 4ghz bundle and had to rma it twice due to instability. now I have that back and was like 6 hours prime stable and was still hard locking all my games up like bc2 crysis and even Dawn of war so turned the clocks to reference clocks and not had a hard lock since :D just gonna keep them and enjoy my system will get round to flashing reference vapor-x bios with working powerplay

Thanks all
 
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