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This is what happened. Before I changed anything, except for changing it to DOCP1/EXPO1 and I had 3200 and 1600. Aida 64 showed latency of 86. When I did Passmark Performance test, it had a lantency of 56 and the graph said I was in the top 80% of memory in their database. After I changed the UCLK to 3200 and changed the FCLK to 2133 (UMLK/1.5) the system booted but Aida64 struggled to work and than gave me a latency score of 241 and the ram numbers for speed were crazy. Passmark Performance test showed latency at 76 percent and the ram was now in the 56% are in their data base. I tried to run the stress test in Aida 64 but it kept causing the pc to crash. Then just turning on the pc it would crash. So I updated to the latest bios. Set the UMLK and UCLK to 3200 each, didnt mess with the FCLK this time. Tried the Aida64 for performance test again and still high latency 76, but did not try its stress test this time. I think something is wrong with Aida64, not working well with my system. I did the Passmark Performance test again and now the latency is 49 and the ram is in the top 96% in their database. I tried using Y-Cruncher but it would not launch. I used Burn in Test by Passmark and it went for 57 cycles 4mins and no errors. I will do longer tests later.

Thanks!!!

Thanks !!!

Thanks, oh what about the TRAS number in the CAS? Its 102, if I change the timings what should I change that too?

Ok, if I wanted to mess with the CAS are there any settings that might be good, and also if change to 6000 do I still enable DOCP1/EXPO1? And do I still change the UCLK from auto?

Oh If I change it to 6200 or 6000, the CAS will be what the kit came with for the 6400 unless I manually change it?

Thanks!!!

Why would they release ram, say it works with mb, say set to DOCP1/EXPO1 and then not say to change the UCLK? The mb I have stock bios says it supports up to 6400mhz ram. I updated the bios to the December 23 bios. So that means people are buying ram and many not know to change the UCLK are not receiving the advertised speed?

So after setting the UCLK, watch out for crashes and blue screens? Run the stability tests?

Thanks!!!

Thanks everyone. I downloaded and used HWinfo, it shows the MCLK at 32.00mhz, and UCLK at 16.00. So that means change the UCLK in bios? If I dont change the UCLK, what situations would the latency affect performance? Gaming? 3D animation and rendering? What stress software would you suggest? The ones mentioned earlier are all from 2010 and 2013. No updates.

So Auto for the UCLK means the ram is at 3200? I dont understand, the bios and even 3DMark shows my ram at 6400 speed. So how is at 3200? What is happening if I dont change the UCLK from Auto? If I am not lowering the speed, why do I need to change the TRFC? I have the bios update from December 2023.

If it is stable now and the timings are good and the voltages, I dont know if I want to mess with the UCLK. What are some signs to look for that would say to change the UCLK to 1:1? You would run a stress test for 24 hours?

I went into bios and without changing anything here is what bios shows DOCP1/EXPO1 Memory Frequency DDR5 6400 FCLK Frequency Auto CPU Core Voltage 1.440V-1.432V Auto CPU SOC Voltage 1.320V Auto DRAM VDD Voltage 1.35000 DRAM VDDQ Voltage 1.3500 Memory Timings CL32 TRCD39 TRP39 TRAS102 UCLK is set to Auto TRFC is set to Auto Notes in bios says DOCP1/EXPO1 Load the DIMMS default DOCP/EXPO memory timings and other memory parameters optimized by ASUS DOCP/EXPO Tweaked Load DOCP/EXPO profile with tweaks for improved performance if config matches DCOP2/EXPO2 Load the DIMMS complete default DOCP/EXPO profile So seems to be fine. Do I need to change anything? I can change ram speed but do I need to? Whats the big differences between the DOCP/EXPO settings? Is it worth trying the tweaked option?

So I look for something called vsoc and set it to 1:1 and 1.3v. Or if downclock set to trfc 500. What is vsoc and what is trfc?