some hd 6850's have been coming out of the box failing or have come with errors in their coding not making them work properly.. they currently are giving special rma priority to hd 6850's that qualify.. you will notice the difference in that they will display having 1120 shaders as opposed to 960 shaders on varios identiciation tools (gpu-z, everest, catalyst control center)
these gpu's are not working properly at all and they are asking those with them to send it back for a proper working one.
this paplies to hd 6850's only and only ones from the following companies:
sapphire
HIS
xfx
asus
msi
powercolor (tul)
vertex 3d (vtx)
connect 3d
yeston
colorful
visiontek
those from diamond while they do qualify are not in the same boat but you are sitll given the same status if you should poses one such defetive card.
your card must be on this ID list..
Q104100000044
Q104100000073 Q104100000073
Q104100000014 Q104100000014
Q104100000069 Q104100000069
Q104100000012 Q104100000012
Q104100000068 Q104100000068
Q104100000062 Q104100000062
Q104100000064 Q104100000064
Q104100000019 Q104100000019
Q104100000078 Q104100000078
Q104100000061 Q104100000061
Q104100000040 Q104100000040
Q104100000045 Q104100000045
Q104100000082 Q104100000082
Q104100000013 Q104100000013
Q104100000011 Q104100000011
while these 6850's with 1120 shaders do work and some stabily future drivers my not work correctly with them or may not even work correctly with the drivers already out in the market. and as a result will result in errors or not work properly..
if yours does work and you wish to risk it your welcome to.. this whole thing resulted from AIB's being given chips and testing instructions for their 650's before the change from the cayman to the barts architecture..
source:
http://translate.googleusercontent.com/translate_c?hl=en&sl=zh-CN&u=http://www.chiphell.com/forum-viewthread-tid-132132-from-portal.html&prev=/search%3Fq%3Dchip%2Bhell%26hl%3Den%26safe%3Doff%26client%3Dfirefox-a%26hs%3DMw7%26rls%3Dorg.mozilla:en-US:official%26prmd%3Dfd&rurl=translate.google.ca&usg=ALkJrhiBRR1VyFgLfkxY1T2XH3C1KQn5DA
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