Horgos Romeo :
i m sorry i don t understand ,i buy this memory end is 2400 mhz ....they will work on 1866mhz ...1600 mhz on my mb or i must order another memory,i m sorry again i m ....a big noob on this.
Hi,
It should work at 1866MHz.
For NVidia boards I would tell you to use the "XMP" setting. I'm not sure what the setting is for AMD. Your manual will tell you.
Go into the BIOS->CPU setting and click that setting (AMP?) to optimize your MEMORY settings. I'd be surprised if that didn't optimize for 1866MHz.
If it does NOT then you can manually change the settings however that's a bit more hassle. You need to set the timings correct but that's not too hard with some help.
Other:
a) update the BIOS first if newer exists ("2501")
b) changing CPU settings often changes memory settings so be aware
c) run MEMTEST any time you mess with settings. Quick test for two minutes, but do a full PASS (roughly 60min for 16GB) to ensure it's working properly especially if you had to manually change the settings.
www.memtest.org
d) Also find and run a CPU diagnostic test. I'm not sure what the best one is for AMD.
Other2:
Your memory is rated for 2400MHz. All memory has several "profiles" which can be detected. You can even see this in "CPU-Z"; for example if it chooses the "1866MHz" profile then it will also choose the correct CAS and other settings optimized for this frequency.
The BIOS must contain the memory profile to auto-detect and apply these settings. It will tend to default to a lower value like the 1600MHz profile but again using the "OPTIMAL" setting it should attempt to use the highest performing profile that the motherboard and memory both support which is the "1866MHz" profile.
The BIOS is occasionally updated with newer memory profiles which is why I suggested updating if newer exists.