guys, is something wrong with my ram or my mobo, cause sometime when i enter bios the ram stated is in dual channel, sometimes in single channel but still shows total of 16gb. but when i enter cpu-z it shows dual channel.

bro, i've heed your advise and did ram mem test, though i didn't unplug and test one by one. (both are ok)
another thing i found out is that my ram CMK8GX4M1A2666C16 is not listed in asrock QVL list, is that one of the reason that its acting this way?
the model name is so similar

unfortunately no. but now somehow i have issue booting from cold now. need go bios and reset xmp profile 2.0 and bios auto restart 3 times then can boot to windows, otherwise will stuck at "Asrock Sapphire" logo (booting from cold or setting the profile to auto).

now i understand why cant run on 2666mhz after you explained, after boot cycle 3 times i think they set it back to default setting meaning xmp profile still not working for me and if i set it to auto instead of xmp profile can't boot at all, all light indicator on but cant reach windows.

will go home and try to run at 2400 mhz, haven't try that. thanks for the suggestion!
running on higher speed can get slightly higher fps? cause recently no idea why my fps increases quite a bit. about 20~40 on 2133mhz all the while. (after agesa 1.0.0.6)

This post has been edited by seichirosano: Jun 14 2017, 05:10 PM

bro, i think i've found the problem. today after i can't boot into windows (stuck in Asorck | sapphire screen) i've went ahead and try each ram. i tried placing 1 ram at a time and boot, Ram A did fine but Ram B can't boot. After that i try to set XMP profile on Ram A and Woila!! it's running in 2666mhz with 1.2v so im guessing the Ram B is causing the issue. but the sad thing is don't know whats wrong with Ram B, i've messaged the seller see what he can do.

oh ya, another funny thing is i've tried playing both ram and boot Ram A in slot 2 / Ram B in slot 4 can't boot. but if i did it vice versa it can boot. :confused: not sure about this but Ram B seems to be always in Dual in cpu z under spd tab. Ram A will be single.

This post has been edited by seichirosano: Jun 16 2017, 11:59 PM

i tried finding in google but i didn't find any typhoon software. this ? "AutoRun Typhoon is a Multimedia Presentation tool that integrates Menus, Web Sites, PDF files, PowerPoint presentations, videos, slideshows or just about anything else you'd like into professional, attractive presentations".

ok thanks a lot! can i do it with both ram installed? because my second ram can't be booted alone, most be accompanied by other ram. and replied from seller already, need to RMA

ops, i thought only read the info within the ram and compare it. then its fine, i won't fiddle the setting. might as well just send back. was hoping that can get 1 to 1 exchange on the spot though.

i continue use the single channel one and send the dual channel one back for checking.

*Update, now even 2666mhz 8gb on the single stick also not stable, after restart will revert back to 2133mhz but can't OC back to 2666mhz, not sure is mobo slot 2 problem or what will go home and try slot 4. same with up voltage to 1.35v still can't get 2666mhz.

This post has been edited by seichirosano: Jun 19 2017, 11:19 AM

you try single stick on slot 4, current result for me are stable to run 2666mhz on xmp profile. no idea why slot 2 not stable

latest update, seller tested with memtest (intel rig) and the ram is fine. so i really dont know what's wrong anymore.

i dont think i'll fork out any more cash for ryzen ram, just pray for the next update that fixes this problem.

no idea, but im using rx 580.

not sure this is common issue but happen since i build this rig, when i shutdown my computer there's a sound like metal hitting the fans sound "teng". it only happens when i shutdown / force shut down by holding on power button and bios restart when setting dram timing.

and when my monitor went to sleep or off (15 minute). i tried open back my computer by moving my mouse / pressing keyboard but the screen remain black but my cpu is still on. the solution is, i have to restart everytime it happen. my power settings are in high performance.

cpu : ryzen 5 1500x
gpu : rx 580 nitro+ LE
mobo: x370 gaming k4