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DDR3 1866 in a 1066/1333 motherboard

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July 19, 2011 3:10:13 PM

Hey everyone, my friend just purchased a computer with my recommendations for pieces but he changed the motherboard for a cheaper one, which coincidentally only supports 1066/1333 ddr3.

I put the whole thing together and when we post tested it, I would get no signal to the monitor, only later did I realize the difference in frequency.

So my question is, is 1866 ddr absolutely incompatible in a 1333 motherboard.

The motherboard is a P8H67-M Evo by Asus and the ram is a set of G.Skill Ripjaws.

The computer won't post, I just get no signal to the monitor.

Thanks for your time guys!

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a c 347 } Memory
a c 716 V Motherboard
July 19, 2011 4:46:45 PM

Correct, on ANY H67's use either 1066 or 1333 MHz RAM. The DDR3 1866 MHz RAM may have a compatible JEDEC 667 {DDR3 1333} 'SPD' but it's not anything that I would recommend using in your situation. The newer Z68's can indeed run DDR3 1866 MHz.

Try booting with (1) stick - Blue slot closet to CPU, once in the BIOS note the DRAM Frequency per the menu, select DDR3-1333 MHz then shutdown and try the second stick. The RAM must be installed in the Blue colored DIMM slots.

However, my best advice is to get a 2x4GB kit DDR3 1333
$63 F3-10666CL9D-8GBXL -> http://www.newegg.com/Product/Product.aspx?Item=N82E168...
$79 F3-10666CL7D-8GBXH -> http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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July 19, 2011 6:14:47 PM

Best answer selected by frenzal.
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July 19, 2011 6:15:18 PM

Thanks for the answer! Helps clear all that up.

Have a good one
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