Memory MHz

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Dawid93

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Sep 16, 2011
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Hello everybody,
I have a new gigabyte hd 6850 and if I see the memory MHz in the Catalyst, Ati Overdrive I see only 1260MHz for maximum instead of 4200 MHz. Is it problem? And if I go to the informational center and at the device identification I see 6739. Is it problem?
 
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Wow, some of the answers I see on here are just sooooo wrong. I mean if you don't know the answer, why even post??

1050x4=4200 effective memory clock

dalmvern

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ATI Overdrive in Catalyst is looking at your GPU core clock speed which, for those cards (and im generalizing), is somewhere between 1150 and 1350, depending on which card you get and if it has been overclocked, etc.
 

julius 85

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No, the 6850's core clock is nowhere near 1150 MHz. The thing is, that 4200 MHz is the effective memory clock, while 1050 MHz is the real memory clock. GDDR5 memories can transfer 4 bits in one clock cycle, so the effective clock is four times the real clock.
 
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