Asus Z790 14900ks throttling question.

[sneekypeet]

I’ll probably just end up settling on like 6600 or 6400 or something. The voltages are definitely too high, but I was curious to see what it could do. I won’t let it stay like that for a daily though.

PS: Hey uhh, lemme get that encore real quick. I PROMISE I’ll give it back…

I get it, just be careful on ambient air cooling, things can turn into a smoke machine real fast going a bit too far.

 

[D007]

I get it, just be careful on ambient air cooling, things can turn into a smoke machine real fast going a bit too far.

Yea.. I’m dialing it back now. Lol but it was fun to play with.
Thanks.
Wish I knew about those 2 slot boards…. /cry

Hey, can you guys give me some suggestions on some two slot motherboards? I’m actually thinking about just swapping the system out.

 

[ShrimpBrime]

I’ll probably just end up settling on like 6600 or 6400 or something. The voltages are definitely too high, but I was curious to see what it could do. I won’t let it stay like that for a daily though.

PS: Hey uhh, lemme get that encore real quick. I PROMISE I’ll give it back…

It's all trial and error.

Properly setting up my memory for benchmarking took me, well, I'd say 3 months on and off daily tweaking, testing, blue screens, screen freezes, and even a little data corruption.

But man, once dialed in, I started kicking LN2 guys butts @ir_cow at way lower frequencies. And it's Samsung die. Just gotta know where to tweak it and each system takes many hours practice. Reading, looking at other people's screen shots, taking notes. This helps prevent me from buying kit after kit. I just get some and work with what I got. Figure it out and dial it in. But because you need frequency to get fast sometimes, yes I resort to chilling because it's a drag race.

Your system, looser than CL 30 timings for daily use just needs to be stable. You won't see any performance loss going CL34 6800mt/s. If anything, it's placebo for most users.

 

[Dr. Dro]

I’m actually finding that to be pretty good advice. Bumping up the SA voltage seems very necessary.
Right now, I’ve got my voltages at:
Memory controller 1.55
Dram VDD and VDDQ at 1.55
SA at 1.35

I’m on the Z790 Dark Hero.

I tried 1.5 on the memory voltages but it crashed. Running more tests right now but temps seem sustainable on air.
I’ll lower it once I get stable and see where it ends up. It could be too high but I’m not so sure.

I know most posts say 1.45 on the memory controller but I don’t see anything definitive on it.
And it definitely needed more than 1.5 on the DRAM at 6800 with stock timings for the 2x32 (64gb) Gskill 6000mhz 30-40-40-96 1.4v kit.
Trying not to loosen my timings at all and see where it can get.

Those voltages are nuts, especially your MC volt, it's just too damn high

If it helps these are the volts I'm using for 7600 on my 13900KS - I have the Encore too like @Super Firm Tofu, but my kit is an older Trident Z5 6800 overclocked

 

[ir_cow]

1.60v for....what? ... v-core? I thought OP and I was talking about Vdimm and SA here. LN2 guys?

I was strictly talking about the VDD2 (IMC) being 1.55v. I wasn't very clear from the beginning.

 

[D007]

Those voltages are nuts, especially your MC volt, it's just too damn high

If it helps these are the volts I'm using for 7600 on my 13900KS - I have the Encore too like @Super Firm Tofu, but my kit is an older Trident Z5 6800 overclocked

View attachment 369500

Yea, it’s not easy pushing these 2-32 GB modules. 64 GB is a bit of a pain in the ass to overclock apparently. Lol

i’d still love to get some suggestions on some good two dim slot motherboards though. I might just swap the whole system out.

Thank you for the information though. I appreciate it.

 

[ir_cow]

It's all trial and error.

But man, once dialed in, I started kicking LN2 guys butts @ir_cow at way lower frequencies. And it's Samsung die. Just gotta know where to tweak it and each system takes many hours practice. Reading, looking at other people's screen shots, taking notes. This helps prevent me from buying kit after kit. I just get some and work with what I got. Figure it out and dial it in. ....

You are exactly right, trial and error and the experience that comes with it the failures. I spend a lot of time looking up other peoples results, testing what I have available and seeing where I land in the mix.

tRFC(SB) has been a tricky one for me recently. I sometimes forget about it and at a certain point it's too low for the frequency your ocing to. Throws errors no matter what and I get confused for hours until I remember haha. Unfortunately this is hidden in Thiphoon burner and is on the 2nd tab page for Asus memtweaks, so it's a guessing game what people have it set for. Hynix is fairly forgiving and scale linear, micron and Samsung hates me.

 

[Dr. Dro]

Yea, it’s not easy pushing these 232 GB modules. 64 GB is a bit of a pain in the ass overclock apparently. Lol

i’d still love to get some suggestions on some good two dim slot motherboards though. I might just swap the whole system out.

Thank you for the information though. I appreciate it.

Basically the Apex Encore and Tachyon X. But it is utterly and absolutely not worth purchasing one, especially since if you're buying another motherboard you might as well flip the whole machine and get a Z890 Apex + a Ultra 9 285K if you're going that far.

IMO, buying another board is simply not worth it at all, even considering you have a 14900KS. These XOC boards are noticeably simpler than your Dark Hero (which is about as good as a general purpose motherboard gets) - target DDR5-6600 C32 (it's already a 10% overclock for your 6000 memory if you're really getting too much grief, which shouldn't be happening IMO), or even 6400 with around CAS 30 latency, it's a much wiser move and a ton lighter on the wallet.

I still think your memory clocks are affected by these absolutely bananas voltages you're running. My 13900KS gets ultra moody with high SA voltage, to the extent that it was lowering it that made it stable. Try 1.2V on the SA or even 1.10-1.15, might help you *plenty*. On the Z690 Ace I used to run - 6400 C30 was a 1.00 V SA for this same chip I am using right now.

 

[D007]

Basically the Apex Encore and Tachyon X. But it is utterly and absolutely not worth purchasing one, especially since if you're buying another motherboard you might as well flip the whole machine and get a Z890 Apex + a Ultra 9 285K if you're going that far.

IMO, buying another board is simply not worth it at all, even considering you have a 14900KS. These XOC boards are noticeably simpler than your Dark Hero (which is about as good as a general purpose motherboard gets) - target DDR5-6600 C32 (it's already a 10% overclock for your 6000 memory if you're really getting too much grief, which shouldn't be happening IMO), or even 6400 with around CAS 30 latency, it's a much wiser move and a ton lighter on the wallet.

I still think your memory clocks are affected by these absolutely bananas voltages you're running. My 13900KS gets ultra moody with high SA voltage, to the extent that it was lowering it that made it stable. Try 1.2V on the SA or even 1.10-1.15, might help you *plenty*. On the Z690 Ace I used to run - 6400 C30 was a 1.00 V SA for this same chip I am using right now.

Yeah, maybe you’re right. Not really worth it in the end to go that far.
I’m dialing back all my voltages now.
1.25 SA
1.5 VDD/Q
1.45 MC

i’ll keep dialing it back until I can’t dial it back anymore at 6600 C32

thank you all for the information. It’s been a great help.

 

[ir_cow]

..... My 13900KS gets ultra moody with high SA voltage, to the extent that it was lowering it that made it stable. Try 1.2V on the SA or even 1.10-1.15, might help you *plenty*. On the Z690 Ace I used to run - 6400 C30 was a 1.00 V SA for this same chip I am using right now.

Same for me. I can run 6000 at 1.4V SA and get tons of errors. But 1.2v, zero. I also genuinely think the SA IO overheats because after an hour or two fiddling with high voltages it will throw errors even with XMP disabled. Turn it off for 15-20min and I'm back. Simply easier to void voltages that piss off the CPU.

1.25 SA
1.5 VDD/Q
1.45 MC

Your missing one

SA (CPU)
VDD/Q (Ram)
VDD2 (IMC)
CPU_VDD_TX (CPU)

All 4 are memory related. Unfortunately every vendor named these different. Like ASUS just calls VDD2 "Memory Controller"

 

[D007]

Same for me. I can run 6000 at 1.4V SA and get tons of errors. But 1.2v, zero. I also genuinely think the SA IO overheats because after an hour or two fiddling with high voltages it will throw errors even with XMP disabled. Turn it off for 15-20min and I'm back. Simply easier to void voltages that piss off the CPU.


Your missing one

SA (CPU)
VDD/Q (Ram)
VDD2 (IMC)
CPU_VDD_TX (CPU)

All 4 are memory related. Unfortunately every vendor named these different. Like ASUS just calls VDD2 "Memory Controller"

You know that has actually been driving me crazy. What does Asus called the TX voltage? Lol

Ahhh IVR transmitter.
What do you think I should set that to?
I’m thinking 1.4.

 

[sneekypeet]

Let it be known, my chip works at higher frequencies with 1.21 or less SA. Some of them are just funny like that.

Offhand I'm not sure of the naming, but it can be found in the advanced memory voltage tab.

 

[D007]

Dialed it all back.
2x32 (64gb) 30-40-40-40-96 @6600
VDD2 & Q at 1.43
SA at 1.15
TX (aka IVR) and memory controller at 1.4.

So far, so good.
Honestly if I can pull a 10% boost with no drop in timings, I’d be very happy with that.

 

[Dr. Dro]

Dialed it all back.
2x32 (64gb) 30-40-40-40-96 @6600
VDD2 & Q at 1.43
SA at 1.15
TX (aka IVR) and memory controller at 1.4.

So far, so good.
Honestly if I can pull a 10% boost with no drop in timings, I’d be very happy with that.

I feel your memory controller voltage is still way too high, you should lower this to 1.15-1.2 range as well

 

[ir_cow]

I feel your memory controller voltage is still way too high, you should lower this to 1.15-1.2 range as well

That's one of the benefits using 2-slot MB, less voltage needed. It might only be 0.05v, but that can be the difference of 200-300Mhz.

It took me a while to map out my CPU to pass memtests and y-cruncher 2.5b using the ASUS Z790 Apex (Encode is the same).

8400 (Single Rank) uses the same voltages as 6933 Dual-Rank. Pretty much the limit of my CPU without going into unsafe land (the way I see it).

SA 1.375
TX. 1.40
VDD2 (IMC) 1.45

Dropping it down to 8000 (S) 6400 (D) and it's as the following

SA 1.15
TX 1.25
VDD2 1.25

Two ways to get the best voltage.

1) easiest and most dangerous, is to set to a known stable voltage for Targeted frequency and work down.

2) Start at a low frequency (with XMP for target) and work your way up. If it fails to post, raise one at the time until it posts again. Do this until you get to the desired frequency. Now fine tune it. Make sure it passes y-cruncher, memtest and a cold boot.

 

[lexluthermiester]

Dialed it all back.
2x32 (64gb) 30-40-40-40-96 @6600
VDD2 & Q at 1.43
SA at 1.15
TX (aka IVR) and memory controller at 1.4.

So far, so good.
Honestly if I can pull a 10% boost with no drop in timings, I’d be very happy with that.

Been lurking, glad you got it sorted!

 

[D007]

I feel your memory controller voltage is still way too high, you should lower this to 1.15-1.2 range as well

Wouldn’t post at 1.2. Posted at 1.3 though.

Been lurking, glad you got it sorted!

Thank you buddy. I’m actually really happy with how this is turning out. Tight timings with a 10% boost in bandwidth. And my voltages are so much better that temperatures dropped a lot. I really appreciate all the help. Running Aida64 now and downloaded YCruncher.
Thank you guys.

 

[ir_cow]

See if IMC and TX can go down to 1.35 if you know what you posted above is stable. Might need up to 1.25v for SA. It's different for everyone.

 

[D007]

See if IMC and TX can go down to 1.35 if you know what you posted above is stable. Might need up to 1.25v for SA. It's different for everyone.

Yea. I took MC down to 1.3 but errored pretty quick. I’ll try both at 1.35
Upped SA to 1.2. Will bump it to 1.25 if not stable.
Thank you.

 

[ShrimpBrime]

I’ll probably just end up settling on like 6600 or 6400 or something. The voltages are definitely too high, but I was curious to see what it could do. I won’t let it stay like that for a daily though.

PS: Hey uhh, lemme get that encore real quick. I PROMISE I’ll give it back…

Latency improvement! Nice work!

Now would be 9.697ns CL32 6600mt/s according to that trusty little calculator.

Glad the other guys stepped in to help. Good bunch I tell ya. Not sure about that one guy though....

 

[D007]

Latency improvement! Nice work!

Now would be 9.697ns CL32 6600mt/s according to that trusty little calculator.

Glad the other guys stepped in to help. Good bunch I tell ya. Not sure about that one guy though....

It’s actually looking pretty good right now at 30-40-40-40-96 6600.
I had to bump some voltages back up because it wasn’t stable when I tried to lower it too much.
SA 1.25
VDD & Q at 1.46
TX and Memory controller at 1.4
Still not passing 63c under load in Aida64 for the last hour.
VPP and 1.8 are at 1.9 btw.

Mind if I ask how long I should run Aida64 and YCruncher?
I’m thinking like an hour of each should be adequate right?

 

[Dr. Dro]

It’s actually looking pretty good right now at 30-40-40-40-96 6600.
I had to bump some voltages back up because it wasn’t stable when I tried to lower it too much.
SA 1.25
VDD @ Q at 1.46
TX and Memory controller at 1.4
Still not passing 63c under load in Aida64 for the last hour.
VPP and 1.8 are at 1.9 btw.

Mind if I ask how long I should run Aida64 and YCruncher?
I’m thinking like an hour of each should be adequate right?

If your rig survives 4h Y-cruncher VST I doubt it's gonna crash under heavy load in 99% of cases, full day then, you're probably completely set for the lifetime of the machine

 

[D007]

If your rig survives 4h Y-cruncher VST I doubt it's gonna crash under heavy load in 99% of cases, full day then, you're probably completely set for the lifetime of the machine

Excellent! Guess I’ve got some fine tuning to do. Thanks!

Edit:
Never used why Ycruncher before, but from what I see I should probably do the 10b benchmark option?
64gb of ram.

 

[lexluthermiester]

Mind if I ask how long I should run Aida64

No more than 20minutes. Beyond that, you're going have saturation in your cooling solution and stability will be properly tested. Also, like Furmark, AIDA pushes hardware to it's limits and can cause permanent faults if your parts have any weakness.

 

[D007]

No more than 20minutes. Beyond that, you're going have saturation in your cooling solution and stability will be properly tested. Also, like Furmark, AIDA pushes hardware to it's limits and can cause permanent faults if your parts have any weakness.

Well it passed an hour of AIDA64 lol

would you mind telling me how to use Ycruncher on 64 GB? Lol

Passed the 10b thing anyway if it matters lol.