Ram timings help.
Ram timings help.
IMO, ditch that, and run the Memtest86 tests.
Memtest86
Go to the Passmark software website and download the USB Memtest86 free version. You can do the optical disk version too if for some reason you cannot use a bootable USB flash drive.
Create bootable media using the downloaded Memtest86. Once you have done that, go into your BIOS and configure the system to boot to the USB drive that contains the Memtest86 USB media or the optical drive if using that option.
You CAN use Memtest86+, as they've recently updated the program after MANY years of no updates, but for the purpose of this guide I recommend using the Passmark version as this is a tried and true utility while I've not had the opportunity to investigate the reliability of the latest 86+ release as compared to Memtest86. Possibly, consider using Memtest86+ as simply a secondary test to Memtest86, much as Windows memory diagnostic utility and Prime95 Blend or custom modes can be used for a second opinion utility.
Click here to download Memtest86 USB package
Create a bootable USB Flash drive:
1. Download the Windows MemTest86 USB image.
2. Right click on the downloaded file and select the "Extract to Here" option. This places the USB image and imaging tool into the current folder.
3. Run the included imageUSB tool, it should already have the image file selected and you just need to choose which connected USB drive to turn into a bootable drive. Note that this will erase all data on the drive.
No memory should ever fail to pass Memtest86 when it is at the default configuration that the system sets it at when you start out or do a clear CMOS by removing the CMOS battery for five minutes.
Best method for testing memory is to first run four passes of Memtest86, all 11 tests, WITH the memory at the default configuration. This should be done BEFORE setting the memory to the XMP profile settings. The paid version has 13 tests but the free version only has tests 1-10 and test 13. So run full passes of all 11 tests. Be sure to download the latest version of Memtest86. Memtest86+ has not been updated in MANY years. It is NO-WISE as good as regular Memtest86 from Passmark software.
If there are ANY errors, at all, then the memory configuration is not stable. Bumping the DRAM voltage up slightly may resolve that OR you may need to make adjustments to the primary timings. There are very few secondary or tertiary timings that should be altered. I can tell you about those if you are trying to tighten your memory timings.
If you cannot pass Memtest86 with the memory at the XMP configuration settings then I would recommend restoring the memory to the default JEDEC SPD of 1333/2133mhz (Depending on your platform and memory type) with everything left on the auto/default configuration and running Memtest86 over again. If it completes the four full passes without error you can try again with the XMP settings but first try bumping the DRAM voltage up once again by whatever small increment the motherboard will allow you to increase it by. If it passes, great, move on to the Prime95 testing.
If it still fails, try once again bumping the voltage if you are still within the maximum allowable voltage for your memory type and test again. If it still fails, you are likely going to need more advanced help with configuring your primary timings and should return the memory to the default configuration until you can sort it out.
If the memory will not pass Memtest86 for four passes when it IS at the stock default non-XMP configuration, even after a minor bump in voltage, then there is likely something physically wrong with one or more of the memory modules and I'd recommend running Memtest on each individual module, separately, to determine which module is causing the issue. If you find a single module that is faulty you should contact the seller or the memory manufacturer and have them replace the memory as a SET. Memory comes matched for a reason as I made clear earlier and if you let them replace only one module rather than the entire set you are back to using unmatched memory which is an open door for problems with incompatible memory.
Be aware that you SHOULD run Memtest86 to test the memory at the default, non-XMP, non-custom profile settings BEFORE ever making any changes to the memory configuration so that you will know if the problem is a setting or is a physical problem with the memory.
there are numerous timing errors present; please adjust them yourself. here is the error reference. (move to data 0.7b and scroll down to absolut)
The device successfully completed memtest86 with four passes at both standard and XMP configurations. The testing process lasted all day and night, indicating strong stability when manual settings were used, including manually setting XMP primaries and voltage. I used a USB stick from a year ago during previous Patriot set tests. The results showed three working units and one faulty, with eight total sticks tested before identifying four functional ones.
To configure Prime95 for RAM-only testing, ensure the minimum voltage increment for the RAM matches the motherboard requirements. There were occasional discrepancies where reported voltages fell below the set values. The XMP value for the kits was 1.45V, but the motherboard and HWiNFO displayed fluctuations between 1.32V and 1.48V depending on system load.
TM5 also completed several passes without errors, though I removed the kits before testing one at a time to isolate potential issues. It’s possible debris from the initial installation caused early instability that resolved afterward.
Regarding timing settings, secondary and tertiary timings are important for RAM stability. Some users report temperature sensitivity based on timing choices. If the hottest stick reaches around 49.9°C during extended TM5 runs (over seven hours), temperatures have been consistently high in the 30s to mid-40s. Most units run cooler, but without temperature control in my environment, I aim for about 22.5°C.
It seems the XMP settings often clash with certain boards. When XMP fails, it's usually due to pre-set secondary or tertiary timings, and disabling XMP prevents these from being set. Therefore, if you define speed, voltage, primary timing, and typically the first secondary timing (which I assume is tRFC), and leave the rest automatic, the board may adjust settings during POST to suit it. This can help when XMP doesn't perform well. Many memory configurations function well initially, but after repeated passes the temperature rises and errors appear more often—this is why multiple attempts are recommended. If you don’t encounter issues on the fourth pass, you’re likely safe under normal use unless your workload is extremely memory-heavy. I’ve relied on these tips before and continue to use them now.
If you're looking for a fast solution while keeping your XMP profile active:
Set the ProcODT to 43.6 or 48, as you already have 4 Ranks (4x8GB) of RAM; I recommend starting at 48.
Choose RTTNom 7 or 34 Ohm, and RTTWr 3 (or 60 Ohm).
RTTPark should be between 3 to 1 (or 60 to 240 ohm).
Use AddrCmdDrvStr: 24.
The RTT value stands for RZQ/240; for example, 3 gives 3/240 which equals 60.
If you want to push or optimize the secondary and tertiary components further, consider these settings:
tRC: 50 (tRAS+tRP)
tRRDS: 4
tRRDL: start at 4, but try 8 then 6
tFAW: 16
tWTRS: 4
tWTRL: go as low as 8 or 6, but try 12 then 10
tWR: begin at 16, then adjust to 8
tRFC: set to 560 initially, fine-tune afterward after adjustments.
tRTP: try 12, then reduce by 2, possibly aiming for 8
tRDWR: your current values are high; standard XMP kits usually start at 8, so set it accordingly. Begin tuning from there.
tRFC down as much as possible.
tRTP: experiment with 12, then lower to 8
tRDWR: these are your current settings, but aim for 3 or 1 if needed.
PowerDown is off.
Attempt to reach the lowest feasible settings, then verify booting with TM5 Absolut configuration for 3 cycles.
Alternatively, consider easing the primary timings first:
tCL and tCWL: 16
tRCDRD: 16
tRCDWR: 16
tRP: 16
tRAS: 36
tRC: 52
You might also adjust the LLC for SOC (and CPU if desired); it often helps during tuning of Ryzen iMs. Keep in mind, BIOS values tend to rise above 50°C, so lowering voltage and carefully selecting LLC options is advisable. This usually means sacrificing some primary timing flexibility for better stability.
tCL could be reduced by 2 for tCWL, which balances secondary and tertiary timings while keeping voltage low. This approach can work well if you manage to lower the primary settings slightly. BIOS models often require 16 flat, so test various combinations—ideally aiming for balance and perfection across both timing and voltage.
Remember to update your motherboard BIOS and chipset drivers to the latest versions (around version 4.11 as of this writing).
For a Ryzen platform? No.
All the timing settings I've encountered across different Ryzen systems—whether through automatic configurations or articles about Ryzen timing—suggest that odd-numbered primary timings, except possibly tRAS, tend to perform poorly or not at all on these platforms. The typical values seem to be 14, 14, 14, 36, or variations like 14,16,16,38, or 16,16,18,38. These aren't the exact timings you'd find in primary settings, but rather more common alternatives. Similar patterns appear in secondary timings as well.
Agreed. Ryzen dislike odd timings since they disrupt how infinity fabric functions. Particularly with dual rank RAM, such as 16Gb or higher, or certain 8Gb dimmers, and when I/O handles mismatched numbers from both ranks.
Yes, because GDM tCL typically begins around 16 or 14 for solid kits, while cl18 is standard in all budget 3600mhz kits. Even if I used odd numbers, the board would round up—like 15 becoming 16, whether it's tCL or tCWL.
For Ryzen, tRCDWR might drop a bit, and tRCDRD could also decrease, but it’s best to keep it higher rather than lower. However, OP kits usually run at 14-15-15 at 1.45v for 3600mhz, which is quite high for cl14. Even with normal XMP settings, errors can appear in tests like Kahru or TM5 using 1usmus v3 or anta777 absolute config. So, aiming for a slightly higher primary—like cl16—and keeping the voltage as low as possible (around 1.4 or 1.36-1.39v)—would be worthwhile. This reduces temperatures without significantly affecting R/W/C performance. I noticed OP secondary and tertiary timings are often off, so even with a lower primary, the R/W/C still suffers from poor secondary and tertiary results.