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asus hd6870 not working at default clocks

Corduroy_Jr

New Member
Joined
Oct 26, 2009
Messages
1,102 (0.21/day)
Location
barrie ont
Processor Phenom II 965
Motherboard Biostar TA870+
Cooling Zalman CNPS10X Performa
Memory Kingston hyperx 1600mhz 2x8gb
Video Card(s) ASUS Radeon HD 6870 DirectCU II 990/1250 stock volts
Storage Seagate 500gb, Wd 1tb black
Display(s) SAMSUNG 2433BW 24
Case Thermaltake v3 black edition
Audio Device(s) onboard, Logitech x540
Power Supply Antec true power modular 650 watt
Software Windows 7 x64 ultimate
i was hoping somebody can help me with my hd6870 its not throttling up to 900mhz on the core, in the mode the highest the clock goes is 775mhz core 1050mhz mem, all this problem started is after i swapped the 6870 to a hd3450, then put my hd6870 back in and uninstall the drivers along with driver sweeper then install the latest 12.8 drivers, also i cleared the drivers 3 times so far same thing, and one more thing at idle gpu z reads 455mhz core 525 memory, but below says the default clocks are 915mhz core 1050mhz mem thats what this card should be running at, and get this if i click on sensor tab core and mem are at 300mhz but once i run furmark clocks go to 775 core 1050 again, sorry blabbing on but problem is really bugging me
 
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