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R5 2600X trying to get 3600MT/s working...

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  • R5 2600X trying to get 3600MT/s working...

    Hello all, first post here.

    I recently brought some F4-4000C17D-32 Royal Silver ready for my Zen3 at the end of the year. Really nice memory.

    I have since been able to push my 2600x to 1700MHz "FCLK" (3400MT/s) and verify stability and error free using this kit.

    Now I am trying for 3600MT/s. I realise this is quite high for a Zen+ (2000) CPU but i have managed to get it to boot and into Windows where with my previous attempts i have not been able to even POST the system at this speed.

    I suppose i should go into my current settings and what iv tried so far.

    SPEC:
    Asus ROG X470-F "gaming" mainboard.
    R5 2600x on 240AIO
    2x16GB Dual Rank F4-4000C17D Royal Silver (With RGB on dur!)
    650w Corsair PSU (80+bronze)
    Gigabyte RTX 2080Super
    M.2 NVMe & Sata SSDs
    Eleventeen-thousand system fans!

    Picture1 is of my 3400 timings and settings. (See attachment)
    • I am running an all core OC of 4.2GHz @ 1.450v with LLC4 and droops to 1.444v under load (CB20) - so i can't (not willing to) really push that voltage any more - Temps reach about 75c peak and settle about 71 in a CB20 run (150watts 90amps ~ish)
    • SoC Voltage is 1.069v and does not seem to droop with any load. I have tried this voltage all the way up to 1.225v but it caused memory errors when too high (LLC4) [do i need droop on SoC?]
    • DIGI+ Power settings are pretty maXXed out 140% current capability etc 450-500KHz switching freq
    • Altering the on die termination (ProcODT) above or below 68.6OHM causes it not to boot (at 3400*)
    • Altering RttPark from Q/1 (240ohm) causes it not to boot*
    • Disabling GearDown causes it not to boot.* [I hear ClkDrvStr @ 120ohm can help this?]
    • I have tried various DrvStr combinations 20,20,20,20 - 24,20,20,24 - 24,30,20,24 etc. and 24,20,20,24 seems best*
    I am using the DRAM CALC by @1usmus as a starting point and then figuring out whats best for my system from that start point as some of the settings reccomended there are not working for my system config.

    Here is what DRAM calc reccomends for me @3600 (See attachment)
    But i have to run a combination of the reccomended and a mix of my 2400 loser timings to get it to boot.



    I guess this post is getting long now so I will leave it at that for now.

    I am looking for some reccomendations on what to try to get stability and things i have not though of.

    Thanks in advance for reading the post and if you have anything to contribute I appreciate it.

    Cheers, SPAWN
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