r/overclocking

DDR5 ECC is silently correcting errors. How do I know if my OC is actually stable?

I've been pushing my DDR5 kit and getting decent benchmark scores, but I'm worried about ECC masking instability. I'll run tests for hours with no errors reported, yet I suspect the memory is correcting errors on the fly instead of actually being stable. Is there a reliable way to check if ECC is kicking in and hiding problems? I've heard y-cruncher VT3 can show performance regression but I'm not sure what to look for. Does a drop in test speed always mean ECC is active? I want a truly stable overclock, not one that's just getting corrected by the memory controller. Any advice on software or specific test settings would help.

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u/Initial-Flamingo6806 — 3 hours ago
I can't undervolt due to Afterburner not adopting the set clock speed

I can't undervolt due to Afterburner not adopting the set clock speed

Hi,

I've been wanting to undervolt my GPU so I booted up Crimson Desert, let it run for 30 minutes and noticed my default GPU profile let it boost to 2805 mhz at 1.025v.
So I went into the curve editor, chose the 0.95v point and dragged it up to 2800+ then flattened the curve.

The voltage limit seems to be taken into account, however my clock speed fell to 25XX-26XX mhz and performance suffered as a result. I legitimately don't know why it's doing this, this is really weird. I've been trying to go further to see if I could move the ceiling so now I'm at 2722mhz for 0.94v but it seems weird to me that Afterburner just doesn't follow my instructions.

How do I fix this?

Thanks

https://preview.redd.it/wtysjbkwkmtg1.png?width=2799&format=png&auto=webp&s=99c236fc8ab00dc571e057d6501a2294485176c8

reddit.com
u/Mihtaren — 22 minutes ago
Image 1 — 9070xt OC model - a lot more Efficient than non-OC model!??
Image 2 — 9070xt OC model - a lot more Efficient than non-OC model!??
Image 3 — 9070xt OC model - a lot more Efficient than non-OC model!??

9070xt OC model - a lot more Efficient than non-OC model!??

So I have got a Very Good 9070xt OC sample

Steel nomad:

- 8030 max (-110mv, 2782mhz fast, +10%=363w, not game stable)

- 7930 (-75, 2782mhz fast, +10%=363w, all game stable!)

But I started to wonder how would it compare to other cards:

- 9070xt non-OC model (tested 6 of those) score 7350-7450 typically on game stable tune(304+10%=334w)

• changed my game stable tune to

330-17%=274w and it scored 7405!

So my OC model sample needs 60w less power to get same 74 fps as base model (best part gaming Oc sells at same MRSP price as base model cards)

Insane!

(Now let’s say I got Gold Sample and typical 9070xt Oc model would only be 5% above base close 7350-7450, so would be 7700-7800 on stable tune. we can estimate and I had 1 out of 6 tested base model cards score 7530 on stable tune)

- so gold sample OC model to Good sample base model:

• my card needed 330-12%=290w to get same 7525 score! (So 44w less than even best base model 9070xt!!!)

——-/ conclusion /——-

- so delta between typical and gold sample 5% fps

- so delta between base model typical and OC model typical 5% fps

- however typical OC models need 12% less power to get typical base model score! (Or -17% if you got oc model gold sample)🤯🤯

——- question!!!———-

(All of that in compact 30x31x18cm ITX custom modded case)

u/BMWupgradeCH — 1 hour ago
Image 1 — Efficiency 9070xt - how it compares ?
Image 2 — Efficiency 9070xt - how it compares ?

Efficiency 9070xt - how it compares ?

So I have got a Very Good 9070xt OC sample

Steel nomad:

- 8030 max (-110mv, 2782mhz fast, +10%=363w, not game stable)

- 7930 (-75, 2782mhz fast, +10%=363w, all game stable!)

But I started to wonder how would it compare to other cards:

- 9070xt non-OC model (tested 6 of those) score 7350-7450 typically on game stable tune(304+10%=334w)

• changed my game stable tune to

330-17%=274w and it scored 7400!

So my OC model sample needs 64w less power to get same 74 fps as base model (best part gaming Oc sells at same MRSP price as base model cards)

Insane!

(Now let’s say I got Gold Sample and typical 9070xt Oc model would only be 5% above 7700-7800 on stable tune, we can estimate and I had 1/6 tested base model cards score 7530 on stable tune)

- so gold sample OC model to Good sample base model = my card needed 330-12%=290w to get same 7525 score! (So 44w less than even best base model 9070xt!!!)

——-/ conclusion /——-

- so delta between typical and gold sample 5% fps

- so delta between base model typical and OC model typical 5% fps

- however typical OC models need 12% less power to get typical base model score! (Or -17% if you got oc model gold sample)🤯🤯

——- question!!!———-

  1. What power setting / consumption 5070ti / Oc model needs to get same 7400 and 7530 score ?

  2. How about 5080 ?

u/BMWupgradeCH — 1 hour ago

3600MHz B-Die, fine tuning and tightening timings.

Next round of tests for my B-Die at 3600MHz. I've managed to loosen tRFC to 140ns while staying stable, and tightened:

tRC from 48 → 44, tWR from 18 → 16, tWTRS/tWTRL from 5/12 → 4/10, tRRDL from 6 → 4, and SCLs from 4 → 2.

I feel like I'm nearly where I want to be with this tune now. I'll probably lower tRTP from 10 → 8, maybe tRDWR from 12 → 10, and probably try tRC from 44 → 42.

it's been quite an experience, and I feel like I've pushed my IMC to its max really. Maybe I'll try 3733MT/s in the future? But honestly, I don't think it's worth it for my use case really.

That's all I really have to say for now anyway, I'll probably make another post when I hit the floor of what I can do with these timings.

Full res screenshot, for those who care.

i.redd.it
u/TheFlyingDutchman99 — 1 hour ago
5700g igpu disabled micron rev e oc advice?

5700g igpu disabled micron rev e oc advice?

https://preview.redd.it/nxeuuehy9mtg1.png?width=387&format=png&auto=webp&s=39b15969d3f8c47878b2e6c90a4d4a16af8d5a3f

the settings above are stable and the dram is 1.4v

it boots 4000mt 1.45v 1.25 soc 2t cmd rate cl 18 22 22 42 96 2000 fclk but it crashes after 2 minutes tm5 anta 777 absolute. is there any way i can make it stable 4000mt 2000 fclk like making it cl 19 23 23 43 or what should i do.

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u/Dull_Werewolf_9642 — 1 hour ago

i5 9600k 50 clock 44 ring ratio 1.35v medium llc avx 2

Brand new to overclocking. Z390 pro WiFi MB.

Prime95 runs 85-93 Celsius and Cinebench runs ~70

Is this ok? Should I be worried for 24/7 use.

It’s not a “high tier” cpu cooler.

reddit.com
u/enoKcMenahS — 2 hours ago

Overclocking Checklist Review - 9800x3d

hi everyone, my computer is below:

Ryzen 7 9800x3d (-25 curve optimizer, +200 boost)

MSI B850M Mortar

32 GB ddr5 Ram (SK Hynix - CL30 | Timing 30-38-38-96) - just set to expo in bios, nothing fancy

Asus Prime 5070TI -stock setting

Corsair SF1000 SFX

Lian Li Galahad LCD 360 mm AIO

Thermal Grizzly Phasesheet as my thermal paste replacement (got me 10c lower than the thermal paste that came with the AIO)

So, I've been moving through a checklist of sorts for my overclock stability testing and I want to make sure I'm being thorough enough without being silly. the initial testing I did led to me buying the phasesheet as I noticed I immediately thermal throttled when stress testing. with the Phasesheet I can stress test for hours without hitting above 85c. I had one short window where I hit 87 during cinebench after applying the phasesheet but nothing after that.

my plan for stability testing is below.

completed:

  1. cinebench - 6 cycles to get phasesheet properly situated (thermal grizzly recommended 10 cycles of 10 minutes above 60c but I began other stress testing after the first six runs when my temps stopped going above 85c)

  2. OCCT: 1 hour test, executed only once, no errors and temps never exceeded 85c

  3. Prime 95: planned for 8 hours but got dinner and went 9 hours instead. Never exceeded 85c, no errors indicated by hwinfo and prime95. no throttling occurred throughout testing.

  4. Y-Cruncher: I'm mid test on SFT V4, currently 4 hours in and planned for 6 hours.

Planned:

  1. Y-Cruncher: VT3 - 4-8 hours (may end at 6)

  2. AIDA64: 6 hours

  3. Core Cycler: not sure. probably 6 hours

I think this should be thorough enough to test full stability for the CPU overclock settings. I would appreciate some feedback on my planned test structure. throughout this journey I've learned A LOT about how fan curves need to be set, how much air is pushed by my fans, the ins and outs of different CPU thermal solutions, etc.

For Context:

I mostly plan to game and do some light ML / simulation work on this computer. this is a personal computer and not necessary for work so I'm not as concerned about rock solid stability as I would be in a work environment.

thank you all, this is very neat stuff to learn about!

One note actually: although cinebench r23 scores ~ 24,150 my time spy score went down on CPU section vs. stock settings

I was never throttled at any point but I'm wondering if anyone could tell me what's potentially happening there.

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u/Leather_Taco — 2 hours ago
5090 UV stable in cyberpunk but unstable in less-demanding games

5090 UV stable in cyberpunk but unstable in less-demanding games

Set my 5090 to 2825 mhz with 890mV, testes in stress test which went very well, then played cyberpunk for around 2h which also didn't cause any problems. Finally played some world of tanks and my game crushed about 10 min of playing ? Can someone explain this to me?

u/Koladek — 3 hours ago

PC build/tweaking help

For hardware longevity, (preferably 10 years, the longer the better), can I get advice on setting the following:

  1. I'm trying to get a 7600x to run within the same thermal limit as the 7600. Is it as simple as turning on Eco mode?

1b Which voltages would I be able to further experiment at lowering?

  1. Regarding the overclocked memory kits that run at 1.4v. Does running ram beyond the base Jedec specs affect the likelihood of the processor/motherboard lasting 10 years? If not, what are the absolute safe limits for the individual voltages for DDR5?
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u/Goble4 — 3 hours ago
Image 1 — I7 6700k pre-delid
Image 2 — I7 6700k pre-delid
Image 3 — I7 6700k pre-delid

I7 6700k pre-delid

I maximised my i7 6700k overclock on the Z170 Prime before my Z270 Apex arrives and i delid the cpu to replace the standard TIM with TG Conductonaut Extreme, it performs quite well and beats the current best score on occt benchmarks at 4.86ghz

u/Comfortable-Pause116 — 9 hours ago
GMKtec K12 won't let overclock RAM
▲ 2 r/MiniPCs+1 crossposts

GMKtec K12 won't let overclock RAM

hi! i was trying to overklock my ram, but the bios shows me that error message. Is there any way to bypass that?

u/Zaissz- — 8 hours ago
are my voltages safe and normal(stable)?

are my voltages safe and normal(stable)?

cpu-9800x3d

motherboard-x870e aorus elite

ram-64g 6000mhz cl30 hynix a die

im not trying to oc anything currently well i just want to make sure nothing is getting deep fried or is lower then what the optimal for stability

both of my vddg were 0.900 which from my understanding is lower then min 0.950

vsoc is supposed to be 1.250?

any help would be nice

u/Usual_Connection7430 — 7 hours ago
Image 1 — Arrow Lake weird memory behavior
Image 2 — Arrow Lake weird memory behavior

Arrow Lake weird memory behavior

I'm primarily on Linux, so excuse the lack of timings screenshot, I'll add one if this frustrates me enough to set up Windows to stabilize the OC. Tertiaries omitted in photos, as they're all Auto.

First of all, let me preface this by saying I got the 270K because I wanted decent gaming performance but my 7800X3D wasn't doing it for the work I do on the same machine, so I'm hoping to get a solid middle ground.

Unfortunately, my 6000 16 Gbit M-Die kit (32-38-38-96) really doesn't like anything above 6000, even with loose timings, so I figured I'd focus on sub timings instead. I didn't have a lot of hope, because D2D took 1.35V to get stable at 32 multiplier - so my chip may be a dud either way.

What I noticed is that any tertiaries will basically lead to no POST and the only way to recover isn't even setting timings back to Auto, but loading a pre-existing profile that I know is stable, even if the only change has been 1-2 tertiary timings.

From what I remember RDRD_sg and WRWR_sg on DDR5 should pretty much always be 8, with *_dg between 12 and 16. None of that works. Sometimes even setting the same timings as the BIOS is showing for the auto setting seems to no POST right after (I did this purely out of desperation).

In general, it's been really weirdly unstable/inconsistent. I haven't even touched the cores at all, one because I'm on air, but also because the second I've even attempted to change LLC or power limits, it would no POST again.

And to be clear, I am not at the edge of stability here. Loading the stable profile and stress testing Prime95 or OCCT (memory, mixed) for hours isn't a problem.

Has anyone else experienced any of this? Is there some weird BIOS setting I'm missing? I haven't done much OCing on Intel since Coffee Lake, besides some quick and dirty Alder Lake ones.

u/schaka — 7 hours ago
Can someone explain this to me? My Zotac Solid Core OC 5080 at a much lower Core Clock is pushing almost as high of a score of my previous Astral OC 5080

Can someone explain this to me? My Zotac Solid Core OC 5080 at a much lower Core Clock is pushing almost as high of a score of my previous Astral OC 5080

The picture is of my Zotac Solid Core OC 5080 2975mhz at .975v +3000 mem 105% power usage (380w). It pulls about 360w with this undervolt and gets this score.

One thing that is strange is that if I didn’t apply an undervolt and just let it run free with a +285 core clock applied with the same mem and power settings listed above, it will only score 9500 with a 3030mhz at 1.01-1.02v. It refuses to go out to its max of 1.05v, however it will hit that in games with a core of 3175mhz at 1.04-1.05v.

In comparison, my Astral OC 5080 scored 9952 with no undervolt, +3000 mem, 112% power (450w). 3270mhz at 1.07v.

My question here is, how can my Zotac at a much lower core clock score almost as good as my Astral with a much higher clock?

My second question is undervolting my Zotac barely lowers its power consumption and when running Steel Nomad, it’s using its full 360w at 3075mhz and 1.015v. Why is it hitting its power limit so early when bench marking?

I had another Zotac solid core oc 5080 that I had traded in for the Astral. That card would only use 260w of power with a 3105 at .975v and would score a 9200 in steel nomad.

TLDR: Zotac Solid Core OC 5080 scores higher in benchmark than exact same model that could get a higher core clock. Also scores almost as high as 5080 astral that has a much much higher core clock. Looking for someone who good knowledge of overclocking and GPU binning to explain my findings.

u/FadesGaming — 20 hours ago

Want to optimize my setup

hello folks,

I have:

7600x3d

6400 CL34 2x24gb

Asus Prime OC 9070XT

ACER GM9 gen5 2tb

B650e Asus ROG ITX

Nr200p max case with fans in bottom and radiator fans swapped for arctic p14 pro

I run -30 CO and PBO enhanced on the cpu

EXPO enabled 5o kit advertised timings in 1:1 mode and 2133fclk

-60mv and -10% and -350mhz on the GPU.

what can I do to improve performance and reduce power and heat?

I know nothing about ram oc/optimization, where do I grt started? not many 7600x3d specific posts tbh hence confused.

reddit.com
u/bustsheedi — 7 hours ago
Image 1 — Finally got around to y-cruncher VT3 — 8000MT/s stable
Image 2 — Finally got around to y-cruncher VT3 — 8000MT/s stable

Finally got around to y-cruncher VT3 — 8000MT/s stable

Following many requests to prove long-term stability, I’ve completed a 9-hour overnight run of y-cruncher VT3. To be 100% sure of the results, I’ve been dailying this config for a while now with zero issues, crashes, or WHEA errors.

271 iterations later, I think it's safe to say this 8000MT/s setup is rock solid. No GDM, tight timings, and full stability. I also completed a 3-hour run of TM5 1usmus v3 without a single error.

I’m planning to run several more tests, including an 8-hour TM5 session, as soon as I can leave the PC long enough. Cheers to everyone who pushed me to do a proper stress test!

u/No_Engineering_3000 — 21 hours ago
Week