4x8GB Hynix DJR on Ryzen
Added 2022-09-15 02:15:50 +0000 UTCCPU: Ryzen 7 3700X
Cooling: Xigmatek Thor's Hammer + Thermaltake toughfan 12
mobo: Gigabyte B550 Vision D-P
BIOS: F15a
RAM: 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 voltages
VSOC: 1.15V // upto 1.2V is safe
CLDO VDDP: 0.9V // upto 1.1V is safe
VDDG IOD: 0.95V // upto 1.15V is safe
VDDG CCD: 0.95V // upto 1.15V is safe
VDDR: 1.6V // max safe voltage unknow
DDR VTT: 0.8V // max safe voltage unknown
RAM speed and timings
Speed: 3800Mbps
PRIMARY TIMINGS----------------------------------
tCL: 17 // 16 or 15 might be possible
tRCDRD: 21 // 20 might work on some kits 19 almost certainly won't
tRCDWR: 8
tRP: 21
tRAS: 21
tRC: 58
tCR: 1T
GDM: OFF
SECONDARY TIMINGS-------------------------------
tRRD_L: 4
tRRD_S: 4
tFAW: 16
tWTR_S: 4
tWTR_L: 8
tRFC: 455
tCKE: 1
tCWL: 16
tWR: 10
tRTP: 6
TERTIARY TIMINGS-----------------------------------
tRDRDSCL: 2
tWRWRSCL: 2
tRDWR: 10 // AUTO
tWRRD: 1 // AUTO
tRDRDSC: 1 // AUTO
tRDRDSD: 4
tRDRDDD: 4
tWRWRSC: 1 // AUTO
tWRWRSD: 6
tWRWRDD: 6
TERMINATIONS--------------------------------------
ProcODT: 40ohm
RttNom: Disabled
RttWR: Off
RttPark: RZQ/5
DRIVE STRENGTHS-----------------------------------
ClkDrvStr: 24ohm // AUTO
AddrCmdDrvStr: 20ohm
CsOdtDrvStr: 24ohm // AUTO
CkeDrvStr: 24ohm // AUTO
SETUP TIMINGS--------------------------------------
AddCmdSetup: 56 // necessary to get 1T working without GDM
CsOdtSetup: 0
CkeSetup: 0
any timings not listed above should be left on auto.
Stress tests passed
400% HCI memtest
Testmem5 ABSOLUT anta777
22x 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.
