jonedeuf64 Posted October 14, 2020 Share Posted October 14, 2020 (edited) Hi everyone, Thanks to A Computer Guy i managed to set 3600Mhz stable with my ram The presets given here : https://forum.corsair.com/v3/showthread.php?t=187175&page=2 were good for Memtest64 , no errors after 4 pass but make windows 10 unstable, rebooting with no BSOD. Here are my settings, stable ingame, running Farcry 5 and Horizon Zero Dawn Benchmarks with no errors: CMW32GX4M2C3200C16 (ver 4.32) DDR4-3600 18 - tCL 19 - tRCD 20 - tRP 42 - tRAS 62 - tRC 6 - tRRDS 9 - tRRDL 32 - tFAW 4 - tWTRS 12 - tWTRL 12 - tWR 4 - tRDRDSCL 4 - tWRWRSCL 496 - tRFC 18 - tCWL 6 - tRTP 8 - tRDWR 3 - tWRRD 1 - tWRWRSC 7 - tWRWRSD 6 - tWRWRDD 1 - tRDRDSC 5 - tRDRDSD 4 - tRDRDDD 0 - tCKE DRAM = 1.35v SOC = 1.025v override mode Gear Down Mode = Disabled Power Down Mode = Disabled Spread Spectrum Disabled ProcODT = 60 ohms RTT_NOM = Disabled RTT_WR = RZQ/3(80) RTT_PARK = RZQ/1(240) CAD_BUS = All 24 ohms Edited October 14, 2020 by jonedeuf64 Link to comment Share on other sites More sharing options...
A Computer Guy Posted October 15, 2020 Share Posted October 15, 2020 (edited) Hi everyone, Thanks to A Computer Guy i managed to set 3600Mhz stable with my ram ...trimmed quote... Nice! With GD disabled are you running CR at 1T or 2T? Since then I found it's behaving as samsung c-die and interestingly less voltage can be more stable for a higher overclock. Thanks to DirtyHarry in thread https://forum.corsair.com/v3/showthread.php?t=199955 for finding this helpful overclocking thread Samsung 8Gbit DDR4 C-Die K4A8G085WC - OC results... First try (a little unstable, pending adjustments) DRAM=1.33v, SOC=1.025 +(SOC-LLC=L1) >> 1.2v 20-22-22-48-68 1T GDM tRFC=630 (AUTO on the rest) DDR4-3733 106% https://www.userbenchmark.com/UserRun/33147352 DDR4-3800 107% https://www.userbenchmark.com/UserRun/33148103 My new B550 ITX motherboard has much better VRM and voltage control than my x470, but by default tends to juice the SOC a bit above 1.2v, and it took a bit to figure out where the right control was to bring it back down. Here is what I am currently playing with ... with ASRock B550 Phantom Gaming ITX CMW32GX4M2C3200C16 (ver 4.32, dual rank, 2 sticks, 32GB) DDR4-3800 20 - tCL 21 - tRCD 21 - tRP 48 - tRAS 68 - tRC 6 - tRRDS 9 - tRRDL 36 - tFAW 4 - tWTRS (last stable at 5) 12 - tWTRL (last stable at 14) 12 - tWR (last stable at 26) 4 - tRDRDSCL (last stable at 6) 4 - tWRWRSCL (last stable at 6) 590 - tRFC 18 - tCWL 6 - tRTP (last stable at 14) 8 - tRDWR (last stable at 12) 3 - tWRRD (last stable at 8) 2 - tWRWRSC (needed 2 to pass 128bit random number generation but this kills performance a bit) 6 - tWRWRSD 6 - tWRWRDD 2 - tRDRDSC (needed 2 to pass 128bit random number generation but this kills performance a bit) 4 - tRDRDSD 4 - tRDRDDD 2 - tCKE FCLK 1900 (keeping 1:1 ratio) DRAM = 1.33v SOC = 1.025v override mode CR = 1T Gear Down Mode = Enabled Power Down Mode = Disabled Spread Spectrum Enabled ProcODT = 36.9 ohms (I think with newer BIOS Zen2 CPU prefers lower ohms...I forgot how I landed at this value exactly) RTT_NOM = Disabled RTT_WR = RZQ/3(80) RTT_PARK = RZQ/1(240) CAD_BUS = All 24 ohms Even though I can FCLK my 3800x to 1900Mhz it's probably at the bleeding edge of stability. I'm not sure if what other voltage controls may help improve the sub timings. Edited October 15, 2020 by A Computer Guy Link to comment Share on other sites More sharing options...
jonedeuf64 Posted October 15, 2020 Author Share Posted October 15, 2020 Thank you for your post very interesting. I'm running CR at 1T Here is results : https://www.userbenchmark.com/UserRun/34174266 My CPU is not oveclocked, i thought it was not really interesting to overclock Ryzen 7 3700 but after a quick look to the thread i will try the 1900 ... I've got a stock fan for my Ryzen . Overclock might be difficult, wait , burn and see :laughing: Link to comment Share on other sites More sharing options...
emissary42 Posted October 18, 2020 Share Posted October 18, 2020 No luck with 3600 18-21-21 or 3600 18-20-20? Usually GDM ON is the easiest for high frequency results. Disabling it only really makes sense if the system is stable with a CR of 1T since GDM ON tends to be faster than 2T (why it is also called "1,5T"). Link to comment Share on other sites More sharing options...
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