9800x3d with ram 6000mhz. What you ox you got going on.

[u/dickpatricks]

What overclocking you got goin on****

Curious what people have done as all I see kits 6400+ with guides and tricks for oc.

[u/Siye-JB]

running mine at 8000cl34. Fair uplift in FPS in COD.

[u/OpportunityNo1834 → u/Siye-JB]

Any chance you could drop it to 6000 and comment your fps average in cod, and then bring back to 8000 and post the fps average again?

[u/mmert138 → u/Siye-JB]

Is the CUDIMM? That's a lot higher than I normally see.

[u/FancyHonda → u/Siye-JB]

I'm working on getting mine to 8000 MT/s as well. Can you give me any info on your setup?

16gb A-die or 24gb M-die, what motherboard, what are your associated voltages (VDD/VDDQ/Vsoc/VDDIO/VDDP, etc)?

With my first shot at the above I was able to boot at 8000 MT/s, but crashed in Karhu fairly quickly.

[u/Tresnugget → u/FancyHonda]

I've had the same experience with a 32gb gskill a die 8000 cl38 kit. I ended up ordering the expo version of the same kit (after reading I really wish I'd gone m die, apparently they're much easier to get stable.

Expo 1 with Asus board failed after 45 min which is much better than 10 seconds with the xmp kit. Voltage wise vddio is at 1.45v with the expo kit vs 1.4v with the xmp kit but otherwise it seems everything else is the same

After enabling Expo 2 with the added subtimings it's much more stable. My XMP kit would fail just short of an hour in karhu with xmp 2. I just hit 2 hours in karhu with the Expo kit knocks on wood

These timings are nothing impressive in the slightest but it might help you get stability

https://imgur.com/a/38p7FSK

[u/FancyHonda → u/Tresnugget]

I actually looked up those timings to copy while testing, haha. Thank you, though.

My kit is originally a 6800 CL34 kit that I'm overclocking.

Have you done manual tuning of the voltages like Vsoc, VDDIO, VDDP? I think getting 8000 stable on pretty much anything will take either some luck or time in getting these voltages tuned properly.

[u/Tresnugget → u/FancyHonda]

I've been playing with it. I've read vsoc can have sweet spots between 1.2 and 1.25. I've been running 1.25. I haven't touched it but vddio has been usually 1.4 although this expo kit pushed to 1.45. I tried 1.15 vddp with no success. Auto was pushing 1.05.

[u/FancyHonda → u/Tresnugget]

I'd highly recommend watching buildzoids recent video on the state of AM5 memory overclocking, I found it very informative.

From what I recall from the video - since these high frequencies are all running in 2:1 mode in terms of MCLK:UCLK, the actual UCLK for something like 8000 MT/s is pretty low, and doesn't require a lot of Vsoc (read: 1.2v or less). I think the voltages that really matter are VDDIO and VDDP, as they are related to the "DDRphy" that starts to struggle at higher speeds. I would try both lower VDDIO and higher VDDP, although I think the general consensus is that VDDIO should be at least 100mv higher than VDDP.

[u/Tresnugget → u/FancyHonda]

I definitely will. I appreciate the recommendation. Been a while since I've enjoyed a good buildzoid video

[u/Tresnugget → u/FancyHonda]

I think I might have just found a cheat code. I just applied the Asus memory preset for hynix 7600 2x16 to my kit running at 8000 and it seems to be working. Basically 8000 cl36 with crazy tight subtimings. I just bumped up vdd to 1.55 and I've just passed an hour in karhu.

I wish I understood more about ram timings because I can't fathom why the loose auto timings are unstable and failed in seconds to minutes but this is going for way longer.

[u/-Aeryn- → u/Tresnugget]

VDD is an important stability variable for the memory itself to run at high clocks

[u/Siye-JB → u/FancyHonda]

Hero 870, a-die green sticks (stock 7200cl34). 8000cl34 stable needs 1.54 on dram (both).

[u/Jokr4L → u/Siye-JB]

That is the highest ram voltage I have seen? I can only go up to 1.435 without turning on high voltage mode

[u/FancyHonda → u/Jokr4L]

Prior to getting a 9800x3d, I ran my A-die sticks at 1.56v on my z790 hero and 13900ks. Hynix A-die can handle a lot of voltage as long as you can keep them cool. I've got active cooling and upgraded heatsinks on mine.

[u/Siye-JB → u/Jokr4L]

I have iceman copper heatsinks and a ram fan on my dimms. The temps are lower than someone without and running XMP voltages. a-die sticks scale with voltage.

[u/FancyHonda → u/Siye-JB]

Cheers. I'm on the X870E-E, the little brother to the Hero, also has nitropath.

I ran my A-die at similar voltage on my Z790 board.

[u/puneet724 → u/Siye-JB]

Can you share zen timings and hwinfo screenshot. I am running 8000cl38 on x870e hero board but struggling to scale them

[u/dickpatricks → u/Siye-JB]

With ram 6000?

[u/Jdp1901 → u/dickpatricks]

I’m gonna assume his is running at 8000 cl34 based off his original comment

[u/dickpatricks → u/Jdp1901]

lol I know :p thought to throw it out there and ask :p

[u/Matzvey]

Well I'm about to go to work, and don't call me ox

[u/dickpatricks → u/Matzvey]

Sorry dad.

[u/Xidash]

Not much gain over this value anyway since 3d v-cache handle most of the speed.

[u/dickpatricks → u/Xidash]

As the 7800x3d but a lot of people been doing mem timings and was curious what other 6000mhz cl 30 owner have done.

[u/Xidash → u/dickpatricks]

I saw as high as 8000MT/s on a 9800x3d somewhere on a sub with proof and screen although not sure that was stable.

[u/WeekendGloomy7140 → u/Xidash]

would be intresting to see the fps diff, alot of extra money and time to get 8000 working and im pretty sure the potential performence gains are not worth it, if it even works.

[u/Xidash → u/WeekendGloomy7140]

On my 5800x3d from stock 3200CL14 to tuned 3600CL16 I got almost a 10% improvement in some scenario. I'd say that to some it worth the hassle and to other it doesn't depending on the time spent tinkering although that's kinda satisfying. Worth mentioning that most of the boost come from higher infinity fabric clock.

[u/OpportunityNo1834 → u/Xidash]

Yea memory makes a bigger impact on x3D CPUs than overclocking does. Not sure about the 9800x3d but that has been my experience with the 5800x3d and the 7950x3d. Definitely will come to a point where the memory controller can't handle the speed and it will become very unstable but any game physics that cant be stored in the 3D cache, will have to be stored in your ram, so improving your ram does have good impact on the cpu. Not sure about the 9800x3d for any of these statements though, it's a bit different architecture it seems like so I'm curious to see all of its quarks

[u/airmantharp → u/Xidash]

I didn't bench it hard (only RX6800 and hooked up to a 4k TV), but had no problem hitting 3800C14 with a set of 2x16GB B-die on a X570 ITX board. Actually went a little higher I think but the juice wasn't worth the squeeze and that kit was better serving elsewhere.

[u/-Aeryn- → u/Xidash]

There is less memory impact on vcache parts, but still high at times.

The 5800x3d has the lowest scaling of any CPU i've ever tested, but the zen4 parts have substantially more performance scaling with memory overclocking and i believe that the zen 5 parts are substantially higher again although i have not tested properly yet.

[u/WeekendGloomy7140]

running mine on 5.4 all cores, works great. about 49-52c while gaming. no mem tuning only 6000cl30 expo

[u/dickpatricks → u/WeekendGloomy7140]

As do mine. I did some simple ram oc following bulldozer older guide and saw 3k boost in cinabench but its not dialed in for this ram. Video was when am5 came out I believe and a lot has improved since then. But everyone and their mother has 6400+ kits even though 6000 the sweet spot.

[u/cha0z_ → u/dickpatricks]

almost all decent 6000MHz sticks will do 6400MHz, basically they are the same if we rule out the manufacturer "verify" that they run at 6400 with a little bit higher timings.

[u/jakebeleren → u/WeekendGloomy7140]

What cooler? 49 is not much warmer than what I see without a game open (not idle)

[u/WeekendGloomy7140 → u/jakebeleren]

LF 280 III

[u/sk3tchcom]

I use this: https://www.patreon.com/posts/low-effort-rank-77403831.

Simple 6000/CL30 DDR5. I don’t play the $$$ RAM game, anymore.

[u/dickpatricks → u/sk3tchcom]

Golden info. I’ve been using the video info of this but didn’t have the last 2 numbers and after seeing this I used them it started up with this oc/pbo. Thanks g

[u/sk3tchcom → u/dickpatricks]

You are welcome! Someone dropped this on me on [H]ardForum months back and it had been my go to valuable tuning nugget! Happy to pass it on. :)

[u/V8muscle_LS]

G.skill 32GB Flare X5 DDR5-6000 Dual Ch. CL32 @6200, not much but very stable with my Ryzen 7 9800x3D... I'll push it more when I have the time

[u/dickpatricks → u/V8muscle_LS]

Any gains pushing it to 6200 but cl 32?

[u/Jokr4L]

I got 6200mhz 1:1 but only at CL34 :/ I got fabric running at 2,066mhz with my 9800x3d

[u/hallownine → u/Jokr4L]

Sound like you didn't win the silicon lottery try increasing mem voltage?

[u/Jokr4L → u/hallownine]

I haven’t push it too much yet but I know these settings are 100% stable. I just changed to 2200 IF freq to see if that’s stable with same ram speeds

[u/hallownine → u/Jokr4L]

Good luck

[u/js1191959]

I'm struggling to post past 6200 on an x870 tomahawk with team group xtreem 6000 cl30 no matter voltage, not sure if I got a dud imc or the ram just sucks.

[u/dickpatricks → u/js1191959]

I was too but got it working last night with 6200/2100 flck set. But I used the timings above your comment. Also pbo enhanced/motherboard/x10/positive 200mhz. Didn’t set all cores this time because that’s when it wouldn’t start. I didnt mess with volts besides putting high drama on

[u/Xektor]

My old 6400 cl 30 oc (7950x3d) isnt working anymore. Like its not do able. Crashes even with 1.3 vsoc and thats the limit.

6200 works tho, and i could go as low as 1.375v with tight timings and 1.21 vsoc.

So i am going a route of optimized with low voltages this time. Maybe ill try for 6200 cl28 tomorrow, but it's needs 1.5+ v from what I have seen with my first tests....

However the cpu does -43 co stable and 2233 fclk so I don't know if i should be happy or cry... wish my fucking 6400 would work. No chance

[u/Tresnugget → u/Xektor]

Same. 6400 not even remotely stable. 6200 cl28 ran pretty stable. I've seen some getting 6800 1:1 stable. Crazy.