"Finding" the limits of Hynix DDR5 at 6666Mbps

Changing timings in the BIOS is frustrating and time-consuming, especially for temperature-sensitive timings. Every single change requires a few minutes for the temperatures to go up again after firing TestMem5. How is it possible to enable edits in the OS? I have ASRock B760 Riptide with an option to turn "Realtime Memory Timing" on, but it doesn't work (shows disabled in ASRock Timing Configurator), even though I have memory integrity turned off in Win11.

Just FYI: this video is in your ddr4 playlist

My 6600 gskill hynix dont go bellow 390 tRFC and 290 TRFCPB on asus z690f which seems really weird. Hat pretty much the same tight timings and on intel latency benchmark i hit 55ns and on aida 57ns. Seems pretty bad considering it passed memtest at 300% and ycruncher. Running a pretty good 13700k but the motherboard maybe the problem.

where can u get that mem tweakit tool?

I see your tREFi is 262143, mine is default at 6250. That's a massive 100x gulf, is there a reason for that?

So is it possible to have a 128G PC running at 6400 MT/s or the available memory is not there yet ?

Hynix or samsung chip?

so the limit of Hynix M-DIE what is it?

Have you figured out N:1 on MSI with DDR5? Nothing but 2T boots for me on 12900K at 6400 and 13700K at 6666-6800 (4 slot mobos)

Hi, i have G-skill 6600 CL34, looks like they are A-die, do you think that i can follow what you did here? I mean you said that should go higher in frenquency and not that low in timing so..
But by the way my mobo is an msi carbon wifi (z690 12700kf), good mobo but not specially designed for ram oc either, so i'm looking for something "simple" to get more out of my rams in daily uses, mainly gaming :).

Hope it was readable because i'm from belgian and there we do not natively speak english, sadge ^^

Thanks in advance for any kind of answer, have a nice day and thanks for all your knowledge!

I have this kit CMH32GX5M2B6000C40. Can you help me with the timings ?

Can you do another hynix settings video for ddr5 7000-8000 range?

Could you tell us how to get VDD over 1.435V on MSI motherboard? My MSI Z790 Carbon locks under 1.435V..

12600k 5.2ghz all core 1.28v load.
Fighting to keep 6600mhz stable does CPU OC affect Ram OC stability???? CPU need more voltage now that I’m pushing DDR5 harder??

Are all Hynix DDR5 kits Hynix M-Die? Or is there different Hynix dies for DDR5? Some mobo manufactures have DDR5 memory compatibility kit lists and they say the die for each kit but some kits say "Hynix" then some kits say "Hynix M-Die"... Is that just a screw up on their part and they're the same Hynix Die? I've been looking through these lists because I want to buy myself a Hynix DDR5 kit for overclocking but want to make sure I get the right die.

Can anyone link the document which buildzoid refers to as the intel document?

I think I got omega screwed on my CPU's memory controller or something's seriously wrong with my board from looking at this. I got a Dark Kingpin as a prize, a 12900k, and a Hynix kit that's 5600Mhz/CL32-36-36-76 at default XMP. Even at 1.4v I keep getting memory errors at a mere 6000Mhz, all else the same as XMP.

can you upload memtweakit so i dont have to download from some sketchy site im on msi z690 unify x

i have g skill 6400 cl32 kit on 12900k asus formula i overclock it to 6666 with 1.5 vdd and 1.45 vddq timing is 30 40 40 46 2n and rest timing r same as u but when i run memtestpro i m getting 4 errors when test reach 600% or above any solution to it

Having difficulty getting my hynix 6400 CL32 chips stable in games. Doing exactly what you do here I can get things pretty tight sub timings within two ticks of yours and still pass 1000% memtestpro and 1 hour of TM5 at 6933mbps 34 40 40 28 @1.55v, Cpu MC @ 1.37v, SA @1.3v. Giant box fan pointed at the board so seeing RAM Temps never go over 50c.
However despite being stable in benchmarks, I will get memory error blue screens or directx crashes in game sometime between as soon as 10 minutes, to as long as 10 hours other days. Lowered it to 6800mbps and not her changes. Increased to 1.56v dram and if anything it may have got worse. After this video I'm now trying 6667mbps but it is frustrating that things run at 6933mbps and sometimes for an extremely long time and others it doesn't.

I'm probably playing lotto by trying to find cheap hynix huh...

You'll have to get hold of an ASRock Riptide motherboard to see if it actually is any good

100% safe for hynix and samsung is 1,4? For daily use or 1,45 ? For benchmarks it will be like 1,5 V ? VDD/vddq. SA 1,35 ? If any one knows

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Not the video for that but speaking of finding limits, have you tried using PYPrime2.2 instead of all the other "Pi" benchmarks? It's far more modern than those and gives great and quick results.

It's great for the whole aspect of overclocking the memory so to say, FCLK, UCLK, Ring bus, MT/s etc etc I find it very nifty and (obviously) better than Aida64 as well; just recently I've tightend my 3800 Rev B for fun, and got a consistent 120 MS reduction there, given how every other variable didn't change it's just fantastic at testing the memory timings as well. I assume you could incorporate it into such videos for a quick check of the parameters as well.

Edit: lol just saw the "Corsair DDR5 invitational overclocking competition part 1: PYPrime LN2 sessions 1&2" video tho 2.2 is better than 2 imo. Honestly it's great to see newer and better benchmarking software being added in general, guess I am just happy there's some alternatives.

Could you please weigh in on 2x32GB DDR5 kits? Are these all the same?

I can't wait to see what Zen 4's dedicated DDR5 IMCs will do with SK Hynix chips!

thank you buildzoid for another great hynix tutorial, ive been significantly improving my ram performance after your last few videos on this topic and its just bliss 😇 will you do a similar video to this with b-die ddr4? i would like to dial in my 2nd rig according to your recommendations as well^^ thanks again for all your work, appreciate it tons, crazily helpful stuff 😁

Buildzoid I have Z690 Aorus Master, 12900K and 2x16GB Corsair Dominator 6200mhz Cl36-39-39 Hynix and it won’t run stable on xmp at 6200Mhz, I’m getting errors in TM5 after 2 minutes. This mobo should be able to handle 6200mhz. What can I change to improve stability at 6200MHz with XMP?

Isn't it helpful to punch in timings in the BIOS as early as possible so that the board has the opportunity to retrain? Won't that allow for iteratively better timings? Or does that only apply to the primaries?

The theoretical max. bandwidth of single-rank 6800 Mbit/s DDR5 should be around 110 GB/s, right? How can you reach this in AIDA if not all clock ticks are used for sending data? Is there some channel interleaving going on with the two 32bit channels on one DIMM?

Iam excited for the new am5 plattform. Looking forward to see how good/bad the mem controller is.

Seems like i9s have utter trash imc generally even if they are supposed to be the highest bins, my 11900K couldn't even boot over 3600Mhz in Gear1 at any voltage settings, then i swapped it out for a 11700K and i can do 3866Mhz in Gear 1 with it at 1.3 VCCSA and 1.25 VCCIO2 (kit is the F4-3600C16D-32GTZN 2x16 dual rank B-die)

12700k when?

great video

how far can you push the frequency and timings with just 1.35v?

Why aren't these stress tests integrated into the BIOS? At the least there needs to be a UEFI versions of these tools.

My 6400 cl 36 Hynix can not do those timings BZ started with. Just no way. For daily tight timings I'm running 6600.

6666 "mbps"?

Six! Six six! Uh, six! The number of the beast!

Satan certified overclock

When do you think they'll send you some A dies?

Can I ask you a question? How is the msi carbon wifi? I think it may be enough to do what I need but I really really want the apex. Lol

6666 mhz is 2x ddr4 2433mhz ddr3 32core trads together lvl fore limits over 4166mhz 4k emo

DDr5 runs to 20 30 ram timings on intel 100 radio its how 200 on my 2.00ppl 1.48v 1.45-6-8 volt on 2 dims ram am can it not do but ddr 4 yes over 2 dims 32gb ram 200 radio for 8c 24gb 100 radio gpu for 6core 48 for 200 radio limit balance cpu ssd ram dis booster software rom all over 1 rim with driver ip from slot allon cpu ram ssd so easy boost it do it

I have the GSkill 6000/CL30 kit which is Hynix, are there some good tweaks I can do out of the box without pushing things too much?

ohh man you also have to look at what makes your cpu minimal how high and low it drives what you drive together with treds always count from 4166mhz these are 4 6 7 9 12 14 15 16 17 timings what you need and higher look what it is lowest and drives the highest number of times you can drive double with timing and radio that's what you can do at the limit with ram if the only 6666 have bad luck wrong software lock you then have to bring the cpu to the limit on the ram lvl to max and then you can if 4x stable 8x stable on cpu timing up to turbo 5.4ghz is 4.62 5.5= 4.63 5.6 4.64 and so on every clock with mhz 150 at radio speed 100 on cpu and 150% mhz set at 350% mhz on ram cpu cpu is at 200 mhz klock high at the limit are 12x ram or 8x ram that you need for max 350 are 150 and 200 position i have that i just don't need it because i drive 4gb at 12x 6x there have 4166 at 12x the same 16.400mhz together i then makes the more power 6 cores 12t are as with 8+ too together 32 cores 8c 16 t = 24 and and from 30 cores you are at max 6200mhz do ddr3 ddr4 ddr5 2133mhz max normal 30 timings from 32 cores you are at 6400mhz ddr4 ddr3 ddr5 the end is at 2133mhz 6200mhz at pu so.ghz c5.7 ist the balanced at 44x radio at 200mhz bus speed if a main core runs at 4.64ghz at 5.7 from 10 nm and 3.7mhz the smaller the higher the cpu has to boost for the lvl all the more cores is unfortunately like that So 4 core one core to keep what 128 cores do or 32 cores do 64 cores do double the calculations yourself and you have to start low 8x24 if not goes from 9900k lvl 14nm or whatever for 32 cores with treads at 3.7ghz to 44x max start with low x radio work high with tuner destop test what's up with ram max i'll tell you only with 256 core 256 cash used 48 gb ram 48 used and 24tb you get 8 ram at 16.400mhz otherwise you don't have to build that simulate without emu on ram that is limit 12 x ram at 4166 or 8 x ram 16.400mhz that's the same with 1.48 pipeline 1.86 with 6 cores 12t cpus with 8 cores 1.88-9 ppl also 1.96 6 cores 1.98 v if you don't even get 4 full at 4.75 ghz in the car getckteten yourself oc ubd self-adjusted ram boost amount that you have to switch tminig to get to the limit up to 1.96. with 6 c with 8c 1.98volt ppl or ram 1.48v board with 4x ram that is only 1.44v to 14.6 volt 6 c 8 core count up you need 32 cores together on 32 for ddr4 limit 6400 at 16 17 timings and 6 7 boot at 288 max = 256 core with 32 core lvl 128 with = and 64 too and below that everything is just 32 is ddr4 to get max try with x32 only to start testing. with new ones from 14 nm at 3.6 3.7 to get 5.4 ghz or 12nm 10 whatever you can calculate yourself look at your timkng that you can drive 64000mhz is 17 timing with ram so 6600mhz 19 timing no 44x you are at 8460 mhz at x44 at 200radio cpu 196 i drive radio for 4.4 4.75ghz turbothat is 5.7 at 1 0 nm 3.7ghz calculate down or hoh who is smaller nm intel only has 100 at 10nm so is the x88 lvl can you never do it with 4 with 2 yes ddr4 only with auto on and so x32 switched and turns itself overspanned to x44 not set nut tuning and see the right timing when busting what you have and ram over 6600 mhz limit you have to drive balanced on x44 that is not possible you would have to block ramslotz drivers 2x at 4 so that nothing goes on it dumnes board sorry .think about it simulating rsm disc with tuner on cpu ssd connected or only ssd with tuner speed on your lvl ram endlvl bosdt then your radio as stop pippline rest for power so easy why don't you all check how it works and you are experts my face hey sorry I explained it to you end.

Abou max. OC and Clock...how would a single rank x16 kit behave?
Kingston has 6000 CL40 Modules (Samung or Hynix) with 8GB. KF560C40BBK2-16.
I know performance is worse than x8 kits, but what about the OC behaviour?

How come that in one generation, one manufacturer dominates (DDR4 -> Samsung B-Die), but that doesn't translate to the next generation at all?