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Listed here are some DDR4 RAM kit profiles with some of the timings. This is useful in case you have the same DDR4 kit while the silicone lottery still applies you can copy and paste some of the timings.
This kit from Corsair comes with single-rank Samsung B-die and an A0 8 layer PCB and even comes with RGB. And two final stable overclock profiles were tested with a 3rd still in the works. The highest possible profile of 4266Mhz 17-19-19-38-CR2 with 400tRFC, 50000 tREFI with DRAM voltage of 1.465v, VCCIO and VCCSA voltages of 1.25v but failed the longer stress test of 2 hours and returned an error. Possible due to the fact B-die has instability issue's when reaching a temperature over 50c. In stress testing temperatures reached 58c on the inner 2 DIMMs.
The 2nd overclock profile was an attempt to get tight timings first and foremost and see what the highest possible frequency would be. This profile runs 3600Mhz 15-15-15-30-CR2 with tRFC 350, 50000 tREFI with a DRAM voltage of 1.45v and VCCIO and VCCSA voltages of 1.175v. This overclock profile passed the 2-hour Prime95 Custom FFTs test.
The 3rd and final overclock profile is used as a daily driver and was the best possible trade-off in voltages, memory frequency and timings. This profile runs 4000Mhz 17-17-17-34-CR2 with tRFC 300, 60000 tREFI with a DRAM voltage of 1.45v and VCCIO and VCCSA voltages of 1.2v. This overclock passed a 2-hours Prime95 Custom FFTs and MemTestHelper2 350% coverage stress test.
This kit from G.Skill comes single rank Hynix C-die(CJR) and an A1 10 layer PCB with RGB. And has to stable overclock profiles tested. The highest possible frequency runs 3800Mhz 18-20-20-40-CR2 with tRFC 500, 50000 tREFI with a DRAM voltage of 1.45.
The 2nd overclock profile is an attempt to lower the timings to gain performance with memory frequency being a secondary. This profile runs 3200Mhz 15-17-17-34-CR2 with tRFC 450 and 50000 tREFI with DRAM voltage of 1.40v.
A G.Skill Royal kit that comes with single rank Samsung B-die on an A0 10 layer PCB with RGB. This kit several stable overclock profiles test. The 1st profile is on an X370 motherboard with a Ryzen 2600. Opting for real tight timings on the XMP frequency of 3200Mhz 12-12-12-28 CR1 with tRFC of 300 and a DRAM voltage of 1.5v.
The 2nd profile is Intel-based and centres around getting the highest possible frequency with the tightest timings. This profile runs 4000Mhz 16-16-16-34 with a 300 tRFC, 65535 tREFI with a DRAM voltage of 1.475v.
The go-to G.Skill kit when it comes to DDR4 overclocking with Samsung B-die it has no RGB just a beefy heatsink. The highest possible profile and this was on a mid-range Z490 motherboard was 4200Mhz 15-15-15-30-CR2 with tRFC of 310, and 65000 tREFI with a DRAM voltage of 1.50v.
The 2nd profile was set to get very tight timings with the highest possible frequency. Even on a mid-range Z490, this is far easier and the overclock was locked in at 3800Mhz 13-13-13-28-CR2 with tRFC of 310, 65000tREFI and a DRAM voltage of 1.5v.
This kit comes with dual-rank Micron E-die and a B1(Dual Rank IC PCB) PCB without RGB. And has two stable overclock profiles tested. The highest possible frequency profile runs in 3700Mhz 16-19-19-38-CR1 with tRFC 560, 28800 tREFI with a DRAM voltage of 1.45v.
The 2nd overclock profile is a to try to get the timings as tight as possible with memory frequency a secondary. This profile runs 3333Mhz 14-17-17-34-CR1 with tRFC 515, 11430 tREFI with a DRAM voltage of 1.45v.
- Good luck!