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Question about memory

post #1 of 5
Thread Starter 
I have an AMD 8320 cpu on a Gigabyte 990fxa ud3 am3+ mobo on which I installed 2 x4 GB of 1333Mhz DDR3 memory in sockets 1 and 3 of the Mobo. I intend to replace this with 2 x4 GB of 1866Mhz DDr3 memory. My question is whether I can use the 1333Mhz memory in conjunction with the 1866Mhz memory or must it all be the same? I plan on installing the 1866Mhz memory in sockets 1 and 3 and would use the 1333Mhz memory in sockets 2 and 4, if that matters. Thanks for any input or advice.
post #2 of 5
as long as they have the same timings, i believe that you can use both sets of ram, but it will downclock the 1866 to 1333
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My First Rig
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AMD A6-3650 F1A75-M PRO AMD Radeon HD 6700 Series Samsung Wonder Ram 
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Samsung Wonder Ram WD Caviar Blue Coolermaster hyper 212 CM R4 Sickleflow X3 
CoolingOSMonitorKeyboard
Artic Silver 5 Windows 7 Professional  Samsung Syncmaster SA10 18.5" Logitech K520 
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CM xTreme power 500w Fractal Design Arc Midi R2 Logitech M310 Some generic mousepad.. 
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post #3 of 5
Quote:
Originally Posted by thepoopscooper View Post

as long as they have the same timings, i believe that you can use both sets of ram, but it will downclock the 1866 to 1333


This.
post #4 of 5
Thread Starter 
Thanks for the infomation. In that case I'll just replace the 1333 with the 1866
post #5 of 5
Quote:
Originally Posted by oneeyeddog View Post

I have an AMD 8320 cpu on a Gigabyte 990fxa ud3 am3+ mobo on which I installed 2 x4 GB of 1333Mhz DDR3 memory in sockets 1 and 3 of the Mobo. I intend to replace this with 2 x4 GB of 1866Mhz DDr3 memory. My question is whether I can use the 1333Mhz memory in conjunction with the 1866Mhz memory or must it all be the same? I plan on installing the 1866Mhz memory in sockets 1 and 3 and would use the 1333Mhz memory in sockets 2 and 4, if that matters. Thanks for any input or advice.

use slot 1 and 2 for one set and 3 and 4 for the other
this will activate dual channel mode which is a little better performance

u can use them all together but stability isnt guaranteed
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