You are running dual channel at 1333MHz. The CPU-Z report shows 666.5 as the DRAM frequency but you have to times that by two to get the actual dual channel frequency. So, 666.5 x 2 = 1,333. Hope this helps you understand the difference in reporting between the two.
Good luck,
my2cents
Update: On second look, I noticed CPU-Z is showing the channel mode as single. Now, that should not be; however, I have see my own shown as single when it is; in fact, running in dual channel mode. I would believe your BIOS!
are the timings correct though its supposed to be 9-9-9-24 but on cpu-z its says 8-8-8-8 i dont know which rows correspond to which number ? i am a amature
are the timings correct though its supposed to be 9-9-9-24 but on cpu-z its says 8-8-8-8 i dont know which rows correspond to which number ? i am a amature
I actually can't answer that question because I'm not sure how CPU-Z is obtaining that information. Maybe it is reading that info directly from the RAM chip and the result you are seeing is the default timings. However, if you changed it in the BIOS, the proper adjustment has been made IMHO. Now, if you want to take a look with another program, you can try HWInfo:
Here's my RAM info:
View attachment 37834
HWInfo provide a more detailed view of your RAM configuration. FYI, I am running at 1,333Mhz.
HWiNFO, HWiNFO32/64 - Download