CMK32GX4M2B3000C15 attempt to 3200Mhz partial work |
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datonyb
Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3139 |
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mate those timings at 3200 will produce far worse ram performance than cl16 at 2933
choices going forward are either buy some samsung b dies or sit down ,take some time and work out exactly what timings to enter and try for EITHER 3000 mhz with lowered primary timings with your corsair or 3200 with sensible timings but 1.45 volts and cl20 isnt where you want to be at all if you want send me a link to the screen shot of thiaphoon burner (the first step in the ram calculator and i'll work it out for you) any way you look at it cl20 isnt what you want have you actually tried the ryzen ram calculator ? http://www.overclock.net/forum/13-amd-general/1640919-ryzen-dram-calculator-1-1-0-beta-2-overclocking-dram-am4.html#post_26417503 ive been using it since the first revision its now on version 11 or something and yes it works on corsair as well as samsungs and the flash stuff add to that grab some example settings from the stilts ram thread and see what you can get from them sticks of ram |
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kerberos_20
Senior Member Joined: 06 Dec 2017 Location: czech republic Status: Offline Points: 3657 |
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kerberos_20
Senior Member Joined: 06 Dec 2017 Location: czech republic Status: Offline Points: 3657 |
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dot worry abour RC, that has nothing to do with stability, if u put it too low, it will slow down your RAM, if u put it too hig, it will also slow down your RAM
RC is time from RAS to CAS, which is same as 20+40 (in your case), feel free to use auto in there, it will work as for main timings, they are usualy fine left on spreadsheet values (but ryzen doesnt like CL 15 that much, so stick with 16) they dont impact stability that much, and since u did put voltage this high, they will work even at lower values (not CL tho :P) but for now try to work with cl16 RRDS is usualy 6 (at 3200) RRDL is usually 8 (at 3200) i use 9 for 3333+ othdrwise i get cold boot issues those two if too high or too low (even if by only 1) will produce too many ram errors or inability to post then i would worry more about tFAV and tCKE those two have way more stability issue than u would think of i may have different ram than yours (samsung b die dual side) but in my case at 3200 tfav at anything different than 37 is unstable, as your main timings are different than mine, u will need to figure out your own working number as for tcke, keep it auto for now can u run passmark memtest from usb stick? see there on which test ull get errors and how many if u get hundreds of errors than start with tfav going +1 or -1 see in which cae ull get more or less errors if u manage to go from hundreds of errors to only few then go with tcke +1 or -1 |
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cx5
Senior Member Joined: 15 Sep 2017 Location: Hong Kong Status: Offline Points: 2383 |
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re-looking it noticed he ran 75 for tRC, while I was still on 70, definitely going to try this correction tonight.
Edited by cx5 - 16 Apr 2018 at 3:12pm |
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x370taichi@3.50gen4
AX750 Optane900P SN770 3800x PosdonZro4 BarrowPWM-17w>420x140x28 XFX SWFT319 6900XT MSI RX560 LP to get Fluid Motion BlueskyFRC 75hz |
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cx5
Senior Member Joined: 15 Sep 2017 Location: Hong Kong Status: Offline Points: 2383 |
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Hi guys,
Thanks to everyone for encouragement, information, etc. I got cited and motivated from this guy making CMK32GX4M2B3000C15 = 2x 16GB = 32GB, where dual side dual rank are hard to work with. http://www.reddit.com/r/Amd/comments/76f3y6/1800x_4_ghz_with_32_gb_hynix_mdie_3208/ And one guy uploaded to rymem = http://rymem.vraith.com/detailed_ram/747 see 3198 and 3208Mhz respectively. So I managed to POST 3200Mhz, using very high timing and very high voltage 1.45V in bios then A-tuning reads 1.47+ volts, else Dr.Debug will get stuck. In fact windows boot till login screen a couple of times, as long as I don't login it will not hang and crash. Anyway, this is my UEFI post picture:- In all honestly, POST success rate 33% change settings safe take my sweet time, POST ok but hang/crach rate 33% could not change settings, post failure 33% i.e. error at Dr.Debug. But it's getting easier and easier to post success without Dr.Debug F9 beep. It's also getting easier and easier to boot to windows login screen without crash, but the moment I login then death. I used very high timing (originally reference a 3400Mhz but then still must add more) : - Because these timing has been upped one notch from running 3066Mhz. Some of the timing numbers got raised by the bios after some crash training. So I kept monitoring the change it made and click save and notice better/easier booting up etc. So, I think my timing may be wrong combination??? Side info. My ram stick could 2933Mhz CAS16 using 1.32 volts very stable. @ 3066Mhz must 1.37 volts CAS up tiny bit. All pci-e 100Mhz kept, no overclock here. bios ver 3.2, may be I should drop to 3.1 as daytonb and might be better ??? ;) So, any advice for me?
Edited by cx5 - 16 Apr 2018 at 5:52pm |
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x370taichi@3.50gen4
AX750 Optane900P SN770 3800x PosdonZro4 BarrowPWM-17w>420x140x28 XFX SWFT319 6900XT MSI RX560 LP to get Fluid Motion BlueskyFRC 75hz |
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