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MSI 790FX-GD70 not booting with my TW3X2G1600C9DHX


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Hi there,

am coming from http://forum-en.msi.com/index.php?topic=128733.msg969494.

I bought a new config 2 weeks ago, and I was unable to boot.

I bought a low cost RAM running at 1333Mhz, and was able to boot.


My question is: does my RAM should works with my motherboard ?

The RAM that I want to use is a Corsair XMS3 1GB 1600Mhz 9-9-9-24

(CM3X1G1600C9DHX) and my mainboard i a 790FX-GD70 from MSI.


On the MSI website, we can read:

• Supports four unbuffered DIMM of 1.5 Volt DDR3 800/1066/1333/1600*/1800*/2133* (OC) SDRAM, 16GB Max


So I need to overclock my motherboard ? (What exactly ?)


I have updated the bios (V1.3 04272009) but still not booting (there is a debug screen on the motherboard which shows "FF" (processor) - "d3" (1 slot of RAM recognition) and then reboot (FF-d3-FF-d3 ...).

I've increased the DRAM voltage until 1.80V (as labeled on the stick) - using the low cost RAM because I can't access the boot with the Corsair ones (I have 2*1GB).

I've also tried to change the speed to 1600Mhz but still not working.


What should I try ?

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supported RAM for your board can be found here...


i think 1333 is the fastest supported speed unless there is a BIOS update for your board that addresses this issue and its unlikely due to the nature of the CPU that 1600 is even ever needed.


please read the whole thread, its not just about 4 sticks of RAM.

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is it on the list from the link? if so it should be fine.

No it is not :(.



With the memory frequency set to DDR1066 or DDR1333 will the system post and run properly?

Yes ! As said before, my system is running fine with my ******** (ahah very good ^^ Ok not a Corsair one) 1G1 1333Mhz (the one I bought in order to access the boot configuration ...)


So I'll try to re sell my memory ... And by one on the list above


Thanks you guys.

If you have any new idea, here I am :p

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  • Corsair Employees

You did not answer my question, please go back and read it again.


And with that MB and CPU the memory would have to be set to DDR1333 or DDR1066 and the CPU would have to over clock to get the full speed out of the memory and they are indeed listed for that MB.

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Oops sorry.

I misread ...


But using my low cost RAM, default value is at 1333. Like that if I reboot with the Corsair one, it will be at 1333Mhz, right ? Or will it automatically adjust the value to an other value ?

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