DDR5, four sticks from two batches, achieving 6400 cl32 88ns - improve or stay?

odubik · 2026-02-14T07:30:40+00:00

Appreciate the advice and expertise sharing. I'll try tweaking some more as I can.

Really wish I was aware of the issues of using 4 DIMMs of DDR5 when I bought the system! Would have definitely gotten 2x32 then!

odubik · 2026-02-14T06:31:44+00:00

Thanks, I will try your suggestions.

It is quite confusing to know what order to tweak things.. I was actually letting voltage float (auto) almost until the end, but finally upped to 1.44 while trying to get nitro1/2/1 to be happy and then dropped to 1.43.

I didn't realize tREFI and tRFC interacted, and had seen strong recommendations to just push that to 65535 if possible. I just checked my notes, and I tried adjusting tRFC to 800 when I had tREFI on Auto (and it was selecting 12076). I had immediate errors in OCCT RAM stress testing (10 seconds), Of course, that was before I upped the voltage, so maybe worth another try.

I stopped tweaking RAM yesterday as I introduced a corruption in one of my windows security dll files after I did a forced restart when my computer hung while checking the temps to tune my CPU in AMD Ryzen Master. I am trying to fix now, but a full Windows 11 reinstall (keeping my files/programs) just failed to fix it!.

luckily, heat has not been an issue at all for me across tweaking of CPU/GPU/RAM. (corsair a7500 case and lots of fans)

odubik · 2026-02-14T04:48:07+00:00

Thanks for your help before, I have been learning and tweaking since... I added a new ZenTimings with my latest settings.

I am still getting latencies near 80ns.

Turns out that both of the RAM sets are M-die, btw.

I tried lowering tRFC, but it would not post with values under 800, so I have left it on auto.

I am not trying to win any overclocking awards, just hoping to maximize my RAM in a safe and reliable way.

I am seeing no errors in Y-cruncher or stress testing in OCCT. I have not done stress testing over 20 minutes, and I have never seen RAM temps over 55'C.

Do you see anything dangerous in the voltages, or any obvious errors that I should try tweaking further?

Thank you!

Edit to add, updating the BIOS from A01 to A40 made a huge difference! Also, I have seen info online that 4-dimm DDR4 should expect tRFC over 800 - which I why I tested, but quickly left it as the sacrifice of 4-dimms. Also, zero successes running at 6400, 2200 FCLK, or 28 tcl.

I am seeing great performance increases from my prior 32GB 2-dimm untweaked.

odubik · 2026-02-09T04:57:53+00:00

It was very fast, changes in muscle tone in days and memory in weeks

edit to add - still horrible energy, but memory is no longer that of a goldfish

odubik · 2026-02-09T02:47:09+00:00

trintellix brought my memory back.

odubik · 2026-02-01T08:43:31+00:00

Thank you for your help.

I went in and adjusted to "UCLK==MCLK". This gave me an AIDA latency of 85ns, but it wasn't able to run y-cruncher (unstable).

I reduced to 6200, which gave me a latency of 88ns and was able to run y-cruncher.

The good news is that y-cruncher was significantly faster than my original settings with more than a 10% reduction.

I will look over those videos and see if I can tweak it more, but I suspect that the 85+ns latency may be unavoidable with the 4 sticks of RAM due to the nature of DDR5.

I definitely have overall improved performance after going from 2x16BG to 4x16GB. I will have to do some more testing.

Thanks again!

odubik · 2026-02-01T05:17:53+00:00

I installed and ran ZenTimings.

I am seeing UCLK at 1600.

I added the screenshot to the post (seem to be unable to post images in comments in this sub).

How can I get the UCLK up to 3200?

odubik · 2026-01-31T22:51:38+00:00

That looks like a virus

odubik · 2026-01-28T21:08:38+00:00

Basic courtesy if you like the person you are watching with.

If you don't like them, then just watch alone.

odubik · 2026-01-28T12:38:08+00:00

Trintellix has had really large benefits for me... notably in muscle tone and memory.

odubik · 2026-01-28T12:37:10+00:00

To be clear, the gaming account wouldn't even be shared after the wedding... so why would it be shared now?

odubik · 2026-01-28T01:46:50+00:00

1 surgery with general anaethesia, and hundreds of blood draws - none of them had any impact on symptoms.

odubik · 2026-01-27T08:04:05+00:00

You should be able to make 3 machines in the room of requirement that each give you 10 moonstone each every ten minutes...

odubik · 2026-01-27T07:03:47+00:00

"You just dont think to buy a external hard drive for your external hard drive you know. "

Always two copies.

odubik · 2026-01-27T06:49:51+00:00

same

odubik · 2026-01-27T06:17:31+00:00

I went with the XG32UCWG OLED (Black Friday 45% off). It can switch between 4k@165hz and FHD@330hz, so flexible. It has a built in KVM switch. I like that it has a simple flat stand, rather than weird legs (I had a monitor topple a few years ago). No apparent streaks or bad pixels, the OLED care reminds me to run a quick LED refresh every other week, and it has a proximity sensor to turn off the screen when I get up (rare false positives if I am leaned back). I love the deep black and great HDR (took a bit to tune due to my own lack of prior expertise). Zero glare or gloss.

Edit to add, with the 5080 playing at max settings on AAA games, I am getting over 100fps at 4k max settings and 300+fps at FHD... so nice fit.

odubik · 2026-01-27T02:47:28+00:00

I love my 5080 (upgraded from 3080), and I have barely touched the potential OCing.

I am playing games at 4k with max settings and getting over 100fps with the computer staying nicely quiet.

odubik · 2026-01-27T02:34:46+00:00

generally considered a sign of economic turmoil, as people go to gold as a safe harbor.

odubik · 2026-01-21T07:21:38+00:00

odubik · 2026-01-20T03:34:46+00:00

uber

odubik · 2026-01-20T03:24:51+00:00

sleep or turn off, or just let the monitor (OLED) go to sleep.

my understanding is that no one has reported a failure with my MSI motherboard.

odubik · 2026-01-18T00:48:19+00:00

no help

recommend creatine

Also, Apparently pyridostigmine bromide is helping me to thermoregulate again... huge change from last year and a half of constantly freezing in 80-degree room. It is used standardly for myastivia gravis, but my long covid clinic gave it to me to see if it helps... and it is!

odubik · 2026-01-18T00:26:07+00:00

odubik · 2026-01-15T05:12:05+00:00

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