4x8GB Hynix DJR on Ryzen (Patreon)

CPU: Ryzen 7 3700XCooling: Xigmatek Thor's Hammer + Thermaltake toughfan 12mobo: Gigabyte B550 Vision D-PBIOS: F15aRAM: Gigabyte Aorus RGB Memory 4400C19 + 4800C19 single rank Hynix 8Gb DJR

!! DJR is very temperature sensitive without a fan even 3800 18-22-22 was erroring !!

RAM / IMC voltagesVSOC: 1.15V // upto 1.2V is safeCLDO VDDP: 0.9V // upto 1.1V is safeVDDG IOD: 0.95V // upto 1.15V is safeVDDG CCD: 0.95V // upto 1.15V is safeVDDR: 1.6V // max safe voltage unknowDDR VTT: 0.8V // max safe voltage unknown

RAM speed and timingsSpeed: 3800MbpsPRIMARY TIMINGS----------------------------------tCL: 17 // 16 or 15 might be possibletRCDRD: 21 // 20 might work on some kits 19 almost certainly won'ttRCDWR: 8tRP: 21tRAS: 21tRC: 58tCR: 1TGDM: OFF

SECONDARY TIMINGS-------------------------------tRRD_L: 4tRRD_S: 4tFAW: 16tWTR_S: 4tWTR_L: 8tRFC: 455tCKE: 1tCWL: 16tWR: 10tRTP: 6

TERTIARY TIMINGS-----------------------------------tRDRDSCL: 2tWRWRSCL: 2tRDWR: 10 // AUTOtWRRD: 1 // AUTOtRDRDSC: 1 // AUTOtRDRDSD: 4tRDRDDD: 4tWRWRSC: 1 // AUTOtWRWRSD: 6tWRWRDD: 6 

TERMINATIONS--------------------------------------ProcODT: 40ohmRttNom: DisabledRttWR: OffRttPark: RZQ/5

DRIVE STRENGTHS-----------------------------------ClkDrvStr: 24ohm // AUTOAddrCmdDrvStr: 20ohmCsOdtDrvStr: 24ohm // AUTOCkeDrvStr: 24ohm // AUTO

SETUP TIMINGS--------------------------------------AddCmdSetup: 56 // necessary to get 1T working without GDMCsOdtSetup: 0CkeSetup: 0

any timings not listed above should be left on auto.

Stress tests passed400% HCI memtestTestmem5 ABSOLUT anta77722x Linpack Xtreme 10GB

Performance

nah

Comments:!! DJR is very temperature sensitive without a fan even 3800 18-22-22 was erroring !!The secondary timings are OK. The tRFC's even pretty good by 8Gb DDR4 IC standards but the primaries are kinda terrible. Especially tRCD which is unlikely to go bellow 20 at 3800 on any kit.