I am having problems with this what I believe is the same memory except a 4GB kit

KHX2000C9AD3T1K2/4GX

What I ended up doing was buying three of those 4GB kits and I am using 6GB in my X58, 4GB on my P45 and I have a spare stick left over for testing.

I got the the above listed 4GB kit from Fry's for $129.99, it was like $142 OTD for each kit. However I can not get it to run at even 1600 c7 on my EP45T USB3P, much less 2000 c9.