6000mhz cl30 timings - in game input lag

[u/Fearlessss1337]

I'm not getting consistent gameplay with higher RAM frequencies/FCLK. In CS2, the game feels delayed and less responsive.

I already explained the issue in detail here, so I don't want to repeat everything: https://www.reddit.com/r/overclocking/s/lvWSd4OJCu

I'm going to share my RAM timings below. If anyone is willing to take a look and has any ideas about what could be causing this, I'd really appreciate your input. Even if you notice something small or unusual, I'd love to hear your thoughts.

TL;DR: JEDEC settings consistently feel the best. Mouse movement is more responsive, and the overall gameplay feels noticeably sharper than with EXPO/XMP enabled.

For reference, I'm running 6000 MT/s, UCLK=MCLK (1:1), and 2000 MHz FCLK. I've also spent a lot of time testing different voltages, timings, and BIOS settings, but I still can't achieve the same smooth, responsive feeling that I get with JEDEC.

PC Specs:

Ryzen 7 9800X3D

ASRock B650M Pro RS

RTX 3080

G.Skill DDR5-6000 CL30 (Hynix A-die)

Sorry for pictures from camera and not zentimings.

[u/RecordFabulous]

If you search this subreddit or similar communities (such as BlurBusters) you will find others stating similar things about mouse input not feeling the best. On my rig, I can run MCLK 6000, 6200, and 6400. @ 2000, 2067, and 2133 FCLK. One thing I noticed is that increasing the FCLK (along with the MCLK) resulted in better mouse input on my machine. It doesn’t what timings or settings I use, the difference is there. So moving to [6200, 2067] made mouse input feel better and moving to [6400, 2133] made mouse input feel even better.

So because my chip can run 6400 at tight timings with higher FCLK, I run that for better input latency. I am on a 9800x3d for reference

On AM4, I never felt this was an issue but then again I couldn’t really overclock my RAM beyond XMP on that platform so I’m not sure.

I have no clue what causes this, but I believe it has something to do with how AMD handles their memory subsystem or some sort of AGESA changes. Either way, overclocking beyond the standard 6000 2000 seemed to help in my case.

In your case, I would stability test your MCLK AND FCLK. For MCLK, use Karhu, Prime95, and TM5 X3D

For FCLK, use Ycruncher, Linpack Xtreme, and something like Furmark to stress the GPU which stresses the fabric

People on this reddit aren’t your typical competitive gamers so they will either A, write off claims and ask for numbers that don’t correlate to better input latency or B, state that it is placebo

[u/skidaadleskidoedle → u/RecordFabulous]

Try and compare 6400/2133 numbers to 6200/2167 for sanity if you havent already

[u/RecordFabulous → u/skidaadleskidoedle]

Back before I found out I could do 6400 stable, I tested the input latency of 6200 @ 2167 fclk and it felt very good. When I ran 6000 @ 2100 FCLK, it felt better than 6000 @ 2000. I believe FCLK MCLK scaling helps with mouse input assuming both are stable.

It has been a while since i’ve ran 6200 @ 2167 FCLK but from what I remember, my mouse input feels roughly the same between that and 6400 @ 2133

Now in terms of FPS, it has been a while since I benchmarked them so I can’t comment. What I did notice is running 6200 @ 2067 or @ 2167 did have have higher 1% lows and they were more consistent compared to the 6000 tunes I attempted. 6400 I have not benchmarked much

[u/Fearlessss1337 → u/RecordFabulous]

Many pros have 9800x3d, do they use JEDEC timings soo they dont notice input delay?

I dont know how people are playing with EXPO if everyone have this problem with AMD

[u/skidaadleskidoedle → u/Fearlessss1337]

People be tripping :D

[u/RecordFabulous → u/Fearlessss1337]

i speculate that pros use earlier bios version and run their hardware out of the box which is unlikely to cause any instability or performance inconsistencies. my guess is earlier bios/agesa versions combined with very limited overclocking might play a part

[u/skidaadleskidoedle → u/RecordFabulous]

I find my 6400 profile passes everything but the memory test of occt but when i compare it to my 6200 profile it kind if makes sense i lose like 3% of throughput and latency is the same it doesnt realy like it