Sadly I am having the same trouble with my Asus R4BE... I have 24 GB of the tactical tracer ram that works fine in my Asus R3E x58 motherboard but will not even allow the system to post in my new R4BE x79 system. but the two newest ones that I bought (8GB - 2x4GB) R/G to match the others work just fine. the part number of the set that works is: BLT4G3D1608DT2XRG.16FM The part number of the ones that don't are: BLT4G3D1608DT2XRG.16FMR the only thing I see different is the "R" at the end. the worst part is, this is a new build for PDXLAN event on Friday the 11th, and this problem comes up not leaving me much time for any solutions. Thoughts?? suggestions???
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