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CPU: Ryzen 7 7800X3DCooling: 240mm Asetek AIOmobo: Gigabyte X670E Aorus MasterBIOS: F10RAM: Kingston Fury DDR5 2x16GB 7200C38 Hynix 16Gb A-dieRAM/SOC voltagesVSOC: 1.2V // High VSOC usually limits max FCLKVDDIO_MEM: 1.3VDDR_VDD: 1.43V  // make sure your RAM has good coolingDDR_VDDQ: 1.3VVDDG_CCD: 1050mV // raising this can help stabilizing high FLCKVDDG_IOD: 950mV

RAM/SOC clocksMCLK: 3000MHz = DDR5-6000UCLK: 3000MHz (UCLK = MCLK)FCLK: 2200MHz

Primary Timings --------------------------------------------------tCL: 28tRCD: 36 // some kits may struggle with thistRP: 28 // probably not minimizedtRAS: 30

Secondary Timings -----------------------------------------------tRC: 58tWR: 48tREF: 65535tRFC1: 466 // can go lowertRTP: 12tRRD_L: 8 // can go lower on some kitstRRD_S: 4tFAW: 20tWTRL: 16tWTRS: 4

Tertriary Timings -------------------------------------------------tRDRD_SCL: 4tRDRDSC: 1tWRWR_SCL: 2tWRWRSC: 1tWRRD: 4 // probably could be lowertRDWR: 16

Any settings not listed above can be left on auto.

Stress tests passed:2000% HCI memtestTestmem5 4x Extreme1 Anta777 100x Linpack Xtreme 10GB

notes:this was mostly a test of A-dies ability to do low tRP. Thank you to Gigabyte for providing the motherboard

Comments

tibbish

Is it just me or is the mobo and BIOS not making much of a difference for the overclocks on AM5? It seems to mostly come down to the CPU's memory controller and RAM.

David N Moheban

How would this differ if you had hynix dual rank A die?

buildzoid

you'd probably want to tight the DR and DD tertiary timings. As for what vlaues. I'd probably try 8 or 6 for them

David N Moheban

Sorry which timings? Tight? You mean loosen? Anyhow here are the timings I was able to work up from watching your video:

David N Moheban

Trc 68 (58) Twr 48 Trfc1 500 (466) Trfc2 400 Trfcsb 300 Trtp 12 TrrdL 8 TrrdS 4 Tfaw 20 TwtrL 16 TwtrS 6 (4) TrdrdScl 4 TrdrdSc 1 TrdrdSd AUTO Trdrddd AUTO TwrwrScl 4 (2) TwrwrSc 1 TwrwrSd AUTO TwrwrDd AUTO Twrrd 2 (4) Trdwr 16

David N Moheban

Timings in parentheses are from your write up done here. Also my Tras is at 96 as I have 30-40-40-96 1.4 v timings. I have seen others go much lower.

David N Moheban

Something weird happened. Bios was setting tCl 40 instead of 30 no matter what I did. Even setting Expo on did nothing. Eventually got a lockup in bios, reset, Fv fragment error warning and reboot into windows telling me my security descriptor has changed and to reset pin code. After that went through OOB experience. Had to reset cmos and start over. At 30-40-40-96 rated Expo timings manually entered. Now all secondary and tertiary timings are on auto with VDD at 1.39, VDDQ 1.35, VDDIO 1.30. Even got electrical mini zap touching reset button on front panel. Not good.

Ryland Kirzinger

Nice! Runs well on my b650m. Running fclk at 2133, don’t know if I want to roll the stability dice for it at 2200

Steffano Claudyo

can i use this setting on 64gb kits? currently running G skill trident Z 6000mhz cl 30 and its an M die kits