Ddr4 Trfc Chart
Reference the linked DDR4 Overclocking Wiki for more specific details for specific IC's. Below is a list of ICs with a good overclocking potential mileage that may vary on the specific IC. For a more accurate list of DDR4 IC's please visit this Reddit article for a more in-depth picture of all available IC's Reddit DDR4 IC listing.
Explanation to several of the key timing parameters in DDR4 memory like CL, CWL, tREFI, tRFC, tDQSS, tCCD_S, tCCD_L and many more a certain number of refresh commands and make up for it later. This mode was added to DDR4 to overcome the performance penalty due to refresh lockout at the higher densities. The number of refresh commands that
If you have a tRFC of 1000 and a tREFI of 10000, 10 of the time your RAM is refreshing refilling the capacitors and therefore unusable. If you're down at 500 tRFC or even lower 250 is possible on some DDR4, you're then only spending 5 or 2.5 of your time refreshing respectively and can get a lot more operations done in that amount of time.
If yes, then high trfc is definitely holding you back, it is the limiting factor. The only solution is to invest in a bdie kit, the cheapest if possible. I usually go with 3200CL14 2x16gb. With this you should easily be able to run 3800CL14 280 TRFC 5456ns. However you may need additional cooling as 3800CL14 requires 1.4556 volts.
For 16Gb Use tRFC of 550ns. JESD79-4B 4B is outdated June 2017 4D came out July 2021. I have not read C nor D, but I can imagine what they say for 16Gbit, Micron and Samsung and Hynix are usually developinggrading for the 350ns optional. Very early 16Gbit modules, and other manufacturers might be 550ns.
C WPF to automate HCI MemTest. Contribute to integralfxMemTestHelper development by creating an account on GitHub.
To set timing parameters for DDR4 non-custom memory parts, see the following table and steps. Table 1. User Parameters for DDR Non-Custom Memory Parts User Parameter Value Format Default Value Units C0.DDR4_TREFI Long 0 ps C0.DDR4_TRFC Long 0 ps C0.DDR4_TRFC_DLR Long 0 ps Important The values entered are not validated
But now I noticed that CPU-Z shows 18-18-38 and a tRFC of 825 clocks. I do not remember seeing what the tRFC was before nor do I remember seeing tRFC at all. 32GB Mushkin Redline 3200MHz DDR4. Aorus A530 Elite WIFI. Bequiet Shadow Rock 3. EVGA RTX 2060 Super. Phanteks AMP 650W. Fractal Pop Air. Windows 11 Arch Linux.
Kit is G.Skill Ripjaws V Series 32GB 2 x 16GB DDR4 3600 CL16-19-19-39 1.35V Dialed down 2 amp 4 and left the main tRFC set to AUTO. Previously they were tRFC2 - 192tRFC4 - 132. and according to this chart, the best tRFC you can expect is 414, which you are beating by quite a bit and are actually in Samsung B-Die territory. If you are
Refresh, just like nearly every other DRAM timing, is roughly constant in terms of absolute time. Double the clock frequency, timings expressed in terms of clock cycles because that is the only expression of time digital electronic can directly work with also double.