Hi everyone!
I’ve spent the last 5-6 days tuning and testing my Kingston 2x16gb Hynix M-die kit. Here is the current profile my PC:
- CPU: AMD Ryzen 7 9850X3D (PBO Motherboard, CO per-core from -5 to -15, Scalar x1, +200 MHz, 5699-5709 MHz all core stable)
- AIO: Arctic Liquid Freezer III Pro 360mm
- Motherboard: Gigabyte X870 AORUS Elite WiFi7
- BIOS: F9, AGESA ComboAM5PI 1.2.0.3g
- Win: 11 Pro 25H2 (build 26200.8875, all last updates, new OS install 26.07.2026)
- Memory: Kingston Fury Beast 32 GB (2x16gb, single-rank Hynix M-die)
- Kit: KF560C30BBEK2-32 (2025, week 42)
- GPU: Asus Prime 5080 OC (0.925mV @ 3000MHz +1500 mem clock, manual fan)
I have completed more than 40+ hours of testing in stress and games.
This included TM5 Extreme@ anta777, repeated y-cruncher FFTv4, N63 and VT3 runs, as well as several long gaming sessions. At this point, I can confidently call the profile fully stable =)
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Today frequency: 6200 MHz
MCLK 3100 MHz, UCLK 3100 MHz, FCLK 2066.67 MHz (go 2133?)
Command Rate: 1T
GDM: Enabled
BGS: Enabled
BGS Alt: Disabled
Power Down: Disabled
Nitro: 1/2/1
Nitro Burst: 8X/8X
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Primary timings
tCL: 28
tRCD: 38 (36 not stable after 2h TM5)
tRP: 38
tRAS: 56 (54,52?)
tRC: 96 (92,90?)
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Secondary and tertiary timings
tRRDS: 8
tRRDL: 12
tFAW: 32
tWTRS: 4
tWTRL: 16
tWR: 48
tRTP: 12
tRDRDSCL: 6 (5 no difference, 4 not stable – error on 1:02h anta777 TM5)
tWRWRSCL: 6 (the same)
tRDWR: 16
tWRRD: 2
tRDRDSC: 1
tRDRDSD: 9 (1 is needed?)
tRDRDDD: 9 (1?)
tWRWRSC: 1
tWRWRSD: 15 (1?)
tWRWRDD: 15 (1?)
tCWL: 26 (BIOS auto, can't change)
tCKE: 0
tMOD: 44
tMODPDA: 32
tMRD: 44
tMRDPDA: 32
tPHYWRD: 6
tPHYWRL: 14
tPHYRDL: 36
tRDPRE: 4
tWRPRE: 4
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Refresh timings
tRFC: 496
tRFC time: 160 ns (M-die wall =))
tREFI: 49151
tREFI time: 15855.16 ns
Refresh Mode: Normal
From what I have seen on Reddit, 16gb Hynix M-die generally does not scale much below approximately 160 ns tRFC, so I decided not to waste time fighting that wall for 0.1-0.2 ns =)
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Voltages
VSOC: 1.25 V (HWinfo reported 1.241 max)
CPU VDDIO MEM: 1.42 V
VDD: 1.52 V (set in BIOS) approximately 1.50-1.515 V reported ZenTimings and HWinfo
VDDQ: 1.45 V (set in BIOS) approx. 1.455–1.48 V reported
CLDO VDDP: 1.05 V (give more stable)
VDDG CCD: 1.00 V (give HUGE stable and VDDG IOD too)
VDDG IOD: 0.95 V
MEM VPP: 1.80 V
VDD MISC: 1.10 V
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My DIMM temperatures reach approximately 50-52.4°C (5.475-5.625 W max in HWinfo) during heavy memory stress tests.
I will probably order (like Gigabyte Aorus Extreme wind blade mount for DDR5) or 3D-print a small RAM fan bracket, because I would feel more comfortable reducing the temperatures by another 5°C or so.
AIDA64 reports approximately 66-67 ns latency with Hyper-V enabled. FACEIT Anti-Cheat does not work on my system without the hypervisor, so I am not going to disable it. I am also not interested in enabling Latency Killer, booting Windows in Safe Mode or using other benchmark-only tricks just to produce prettier numbers like 59-61ns, its not real =)
Does anyone here have exactly the same Kingston kit and a similar 6200 CL28 profile? Have you managed to improve anything further while maintaining full stability?
Any suggestions or comparable M-die results would be appreciated.
I would especially be interested in results with FCLK 2133.