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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
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


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CPUMotherboardGraphicsRAM
Intel Core i5 2500k @ 4.9Ghz Gigabyte GA-Z77X-UP7 EVGA GTX 980Ti SC 2x 4GB Patriot Viper Xtreme 2400Mhz 
RAMHard DriveHard DriveCooling
1x Corsair XMS 4GB 1600Mhz Intel 520 Series 120GB SSD WD Caviar Blue SATA II 640GB EK CPUWB & Rad, Temporary XSPC Pump & Res, All ... 
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Intel Atom D525 2C/4T 1.8Ghz SuperMicro X7SPE-HF-D525 Integrated - Not Used 2x 2GB DDR3 Sodimms 
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4GB Sata DOM Passive (except for PSU Fan) Debian GNU/Linux 8.0 Jessie PicoPSU 120Watt with 60Watt EDAC Brick 
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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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CPUMotherboardGraphicsGraphics
fx8350 @5.2Ghz Gigabyte GA-990FXA-UD5 Club3D R9 280x RoyalKing Club3D R9 280x RoyalKing 
GraphicsRAMHard DriveOptical Drive
Club3D R9 280x RoyalKing corsair dominator platinum ddr3-2133 SV300S3N7A/120G  LG WH10LS30K 10X Blu-ray Burner 
CoolingOSMonitorKeyboard
h100i with 2 delta afc1212de 120x38mm Windows 8.1 x64 vizio e470vle TT esports Poseidon ZX 
PowerCaseMouse
corsair hx1050 Corsair air 540 g502 proteus core 
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Phenom II X4 910e GA-880GM-UD2H PowerColor AX6750 OCZ DDR2 PC2-8500  
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