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GA-MA790X-DS4 & Corsair 2gb 8500 C5D cant run at 1066mhz


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Hi to all i have recently put together a new system and i cannot seem to get the RAM to run at 1066Mhz only 800Mhz. I am running the F5 revision of the bios and i still cant change the ram to 1066 any help would be apreciated.




Motherboard : GA-MA790x-DS4

P/S: Thermaltake 850w QFAN

VGA CARD: 4870 1gb

Mem: Corsair 2gb 8500 C5D TwinX

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The Phenom has a wonky integrated memory controller and it is VERY hard to achieve 1066Mhz. I advise most people to either purchase 800Mhz DRAM with that CPU or if they already have the 8500 DRAM, to drop the speed to 800Mhz and timings to 4-4-4-12 which will give performance very close to 1066Mhz and 5-5-5-15.
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