any idea why pc freeze or crashing when i put my ram to 8000mhz

[zenith elm]

mobo msi mpg x870e edge ti
amd 9800x3d
gpu rtx 4090
ram G.Skill Trident Z5 Royal DDR5-8000 expo
2t samsung pro
power 1200w asus
windows 11

and ram sticks are on a2 and b2

i have updated bios and cpu and and windows updates and i go menu and change to expo

so pc only crash and freeze when i change ram 4800 to 8000 ???
i have even tooked memtest and its was fine

[red tangle]

?

why is it shocking your overclock not working

[latent abyss]

Run at 6000

[red tangle]

not bad idea

[latent abyss]

You will find no or very very negligible gains to try and run at 8000 if you can get it to work with a 9800x3d

[zenith elm]

well i just press on bios that expo setting and its just put 8000

[red tangle]

depends on workload but i think its best

[red tangle]

what ram

[zenith elm]

u mean cl ?38-48-48-128 and 32 gb

[red tangle]

ok set 6000 30-36-36-76 and rest of setting in this https://www.patreon.com/posts/low-effort-rank-77403831

[red tangle]

it will be faster

in most workloads

[zenith elm]

well i have my older ram sticks should i try them... g,skill 6400 intel cl32

[red tangle]

ok, good chance will not work

[zenith elm]

cause i read manual and its say its support also intel

xmp

[red tangle]

xmp and expo are the same

[red tangle]

just down to trade marks is why we have xmp and expo and not just 1

[red tangle]

its working?

[zenith elm]

i changed it and not yet freeze or crash put some how 3dmark start slower

[red tangle]

uclk=mclk?

[red tangle]

what stress tset?

[zenith elm]

its 6000 mhz

[red tangle]

ok

[zenith elm]

lol i got even worst Time Spy Extreme score 14 056 on 6000 mhz and when its was 4800mhz i got
15 018... so its look working cause i was even crash and freeze when tryed 3dmark

[red tangle]

so its stable in 3dmark with ddr5 6000

but slower?

send zentimigns image i bet its doing somthing stuip

[zenith elm]

yes when its star loading or star up

[red tangle]

just send image of zentimings

[red tangle]

well thats lookos mosty nomral

just nomral shit timings

[zenith elm]

like i said im new on pc stuff on what goes tuning or overclock etc

[zenith elm]

what is smt its say false

[latent abyss]

Slower but stable naturally. Also real world benchmarks > 3dmark etc benchmarks

A 4070 benches raster higher than a 7800xt in 3dmark. A 7800xt on average is better than a 4070 in raster in games.

Just as an example of why benchmark tools are not the definition of better performance hardware

[latent abyss]

SMT is multithreading. You want it on in BIOS settings normally. Oddly you’re not the first person to recently say this was off. Had someone a few days ago with a prebuilt that had it off. It should be on by default, or AUTO.

[zenith elm]

well there was only options disable and auto...

[hard dawn]

6400*

[latent abyss]

I think I’m standard operation should be 6000 and PBO up to 6400?

[zenith elm]

update its still little bit freeze when gaming

[red tangle]

?

SMT is how your 8 cores get 16 threads

[red tangle]

PBO has nothing to do with ram

[latent abyss]

I thought it changed the FCLK now. Apparently not it’s still manual.

[red tangle]

?

[red tangle]

what fclk your set?

[keen hare]

8000 is real high

[red tangle]

depends on a few things its easy then 6400

[red tangle]

the limit for uclk is around 3000 to 3200mhz meaning 1:1 max is 6000 to 6400
where 2:1 its more how good mobo is and more down can your chip do that/is your cpu good with not uclk

[red tangle]

https://www.patreon.com/posts/my-personal-am5-116922010

[zenith elm]

could it be Stutter issue ?

[keen hare]

fix ?

[zenith elm]

well i chage some settings on 6000mhz and works but lets see on longer use what happens.

[red tangle]

your running jedec 6000