asrock extreme4 am+ and ddr2 800

Aug 24, 2014
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I have purchased a "asrock extreme4 am+" with an "FX=4130" class chip.
one of the reasons I purchased it was that a webpage "http://motherboard.findthebest.com/compare/112-120/ASRock-970-EXTREME3-vs-ASRock-970-EXTREME4" told me I could use my existing DDR2 800 Ram in it !
But I have found info to the contrary .
can anyone help