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Amd FX ram question

post #1 of 6
Thread Starter 
I've been doing some research the new bulldozer. I've read a few brief statements about the RAM issues with this CPU, something about using all 4 DIMM slot will slow the system . Does anyone have information or links regarding this issue?
post #2 of 6
The more DIMMs you have the more strain you put on the memory controller. At standard speeds it will be fine but if you plan on overclocking its advised you only populate 2 of the DIMM slots.
    
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post #3 of 6
Thread Starter 
So if I plan on OCing a FX8150 on a Asus Crosshair V to 2133Mhz RAM I should only do only 2 DIMMS. Good to know, I can shift some money from the RAM to a larger SSD
post #4 of 6
Quote:
Originally Posted by NinjaDuck View Post

The more DIMMs you have the more strain you put on the memory controller. At standard speeds it will be fine but if you plan on overclocking its advised you only populate 2 of the DIMM slots.

^^This. More sticks mean more strain on the IMC which means a restricted, less stable OC. Stick with 2 mate thumb.gif
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Kukumonster
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A pleasant surprise :)
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post #5 of 6
I have read that fx cpus only support 1866 natively on every other dimm. The other 2 are 1600. I swear I seen on newegg comment and I have seen in some specs somewhere. Someone with some more info lemme know please

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post #6 of 6
Quote:
Originally Posted by dstoler View Post

I have read that fx cpus only support 1866 natively on every other dimm. The other 2 are 1600. I swear I seen on newegg comment and I have seen in some specs somewhere. Someone with some more info lemme know please
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Someone on Newegg has no technical clue what they are talking about then. rolleyes.gif

The FX CPUs run RAM at 1866 MHz. by default. Assuming your RAM is rated at 1866 MHz. you will need to set this in BIOS for most RAM as the SPD is not programmed for the higher 1866 MHz. frequency. There is no real performance gain in running higher RAM frequency except on the Llano APU based systems.
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