DDR4 3200 14-15-17-21

Discussion in 'Overclocking & Cooling' started by Sherloc09, Dec 21, 2018.

  1. Sherloc09

    Sherloc09 Limp Gawd

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    https://pcpartpicker.com/product/Tj...-1-x-16gb-ddr4-3600-memory-f4-3600c19s-16gvrb

    So the caveat is that the memory is actually rated as 3600mhz 19-20-20-40. Posted this over in the HotDeals section since figured it was a steal at $130 per 16 gb kit.

    Was not able to get the memory stable at the rated 3600mhz speed with DOCP profile on my x470 Asus Crosshair VII Hero (Wi-Fi). So started dropping the frequency and tightening the timings. Got it stable 10 passes of IntelBurnTest on Maximum at 3200mhz 14-15-17-21 /w DRAM Voltage 1.4 and CPU SOC Voltage of 1.1. I'm using two sticks [from separate kits] in dual channel mode on the Asus x470 Crosshair VII Hero.

    1. First set the DOCP Standard profile.
    2. Second drop the frequency to 3200mhz.
    3. Third set the DRAM Voltage to 1.4v [XMP 2.0 supposedly goes to 1.5, so 1.4 should be safe but YMMV].
    4. Fourth set the CPU SOC Voltage to 1.1v [DRAM Calculator recommended the 1.1v at max for this kit].
    5. Fifth enter the DRAM Control submenu and change the latency to something like 16-18-18-36.

    Save this and reset.
    Run 10 passes of IntelBurnTest on Maximum overnight to ensure stability, then drop the timings down and retest until you find the limit the latency can be tightened.

    The memory is Hynix CJR, 2 rank, 16gb per kit. Thoughts? Never seen DDR4 with RAS Active of 21. Heck from most kits of Samsung B Die you're looking at upper twenties or low to mid thirties.

    Disclaimer
    Am not responsible for any overclocking the reader chooses to perform. Overclocking is done at your own risk.
    3200_OC_12.png
     
  2. kirbyrj

    kirbyrj [H]ard as it Gets

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    I've been playing around with different memory in my Ryzen system also. I haven't had good luck with the M-die Hynix (G.Skill Aegis) personally even just at rated 3000mhz. I just picked up some older G.Skill RipJawsV DDR4 3466 (2x8) to play with (paid $135) with the Samsung B-die in them. The XMP at 3466 is 16-18-18-38, but it booted right up and I've had zero problems with it. I don't see why I couldn't set the same 14-14-14-21 timings as my old FlareX had just running at 3200mhz instead of 3466mhz.

    Nice to see some good results with 16GB DIMMs and Hynix memory.
     
  3. Sherloc09

    Sherloc09 Limp Gawd

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    Try the Ras Active 21 and see if can get a benchmark up, would be curious to see how low B dies can get.