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Igors Lab: Less MLCC, more crashing and lower clocks?

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Frammish
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 13:15:25 (permalink)
@kevinc313 - you may not like how Lokator said it, and Lokator may or may not know all about capacitors, but he paraphrased the article well and those are the same terms Igor used in the article. Also, there are many different kinds of ceramic and tantalum capacitors. Using the terms he used, Lokator was more specific about the caps than you were. Professionals do call them by their “formal” names when those differences are important to the conversation - such as here with these.
 
And there is a cost difference. I don’t know what prices they are paying but there are 10 MLCCs or one poly in each of the six locations on the back of the board. If there was no cost difference, all boards might be using all MLCC caps like the ROG Strix. Why do you think the cheap boards are using polys? It’s because there is a price difference somehow and the polys are cheaper especially in a 10:1 situation. That’s 10 parts placements instead of one in each location using MLCCs. Maybe not a big difference price wise (you’d need to run all the numbers to know) but the lines will be faster when you use fewer parts. That has a cost and benefit.
 
Also, just to be clear, different capacitors have different filtering characteristics but you probably already know that. I do not mean to say that all MLCC is necessarily better than all or some poly. It could be in practice you want both there for each to knock out some frequency of noise, provide some stability to the power, etc. Asus, for whatever reason, decided to go all MLCC on their high end cards.
 
@mrjeffos - I would bet the system power supply does play a role in this but very hard to say how much in this particular case. Weak/cheap supplies will have more ripple, more switch noise, etc. That just makes margins less for anything that runs off it and could be a factor. But hard to really say without more information.
#61
jsteedman
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 13:33:20 (permalink)
ehabash1
jsteedman
 
 We do know that live on air GN showed the first 3080 to hit 14k on port royal on LN2 and that it was a FTW3 with 0 MLCC... Before that it was the highest overclocking card on air at 400watts.


It actually had 1


I count 0
 

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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 13:35:46 (permalink)
Jay2Cents just posted a video about it. 
 
https://youtu.be/x6bUUEEe-X8 
#63
Axejess
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 13:43:21 (permalink)
jsteedman
ehabash1
jsteedman
 
 We do know that live on air GN showed the first 3080 to hit 14k on port royal on LN2 and that it was a FTW3 with 0 MLCC... Before that it was the highest overclocking card on air at 400watts.


It actually had 1


I count 0
 


;
https://www.reddit.com/r/nvidia/comments/izhpvs/the_possible_reason_for_crashes_and_instabilities/g6k90vz
https://imgur.com/a/IMVFdTP

Maybe his was a earier model or something seems fine now with 4-2


#64
robertdinh
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 13:45:23 (permalink)
EVGANewMember2719
Jay2Cents just posted a video about it. 
 
https://youtu.be/x6bUUEEe-X8 


Thanks, will check it out.
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ccoyne83
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 13:48:00 (permalink)
Interesting discovery by Igor and others. Certainly limits options if true
#66
HawkOculus
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 13:52:41 (permalink)
robertdinh
Seems like AIBs weren't given enough time by nvidia to properly test everything.


Yeah, which makes the artificial stock problems even worse. It was orchestrated by Nvidia to start with, and then with their usual secrecy all of the AIBs had to deal with this nonsense.

It all makes sense now.
#67
jPup omg
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 13:53:56 (permalink)
ccoyne83
Interesting discovery by Igor and others. Certainly limits options if true




Which cards would you say are most viable with this in mind?
#68
vinnces
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:00:55 (permalink)
Welp, looks like I'm going Asus this gen.
#69
Talon2020
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:01:06 (permalink)
EVGA RTX 3080 XC3 Ultra, no crashes for my card yet. 

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Crismac1
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:07:49 (permalink)
You would think if you charge $1800 for 3090 FTW ultra you would get 6 MLCC. If in fact, this is the problem causing crashing.
 
Hmm, I need to rethink and consider FE and TUF cards if this is true. I am definitely going to watch this story closely.


 
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#71
SpriteCup1
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:07:56 (permalink)
Are we going to get official comment from EVGA and Jacob on this?

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EVGANewMember2719
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:09:42 (permalink)
Crismac1
You would think if you charge $1800 for 3090 FTW ultra you would get 6 MLCC. If in fact, this is the problem causing crashing.
 
Hmm, I need to rethink and consider FE and TUF cards if this is true. I am definitely going to watch this story closely.




I backordered a Strix 3080 now from CDW. Just in case I need to return the FTW card that is in route to me. 
post edited by EVGANewMember2719 - 2020/09/25 14:31:30
#73
jsteedman
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:09:52 (permalink)
Axejess
 
https://www.reddit.com/r/nvidia/comments/izhpvs/the_possible_reason_for_crashes_and_instabilities/g6k90vz
https://imgur.com/a/IMVFdTP

Maybe his was a earier model or something seems fine now with 4-2




Yeah it was possibly a prerelease, it also had a 400watt bios instead of a 420 so a couple things were different.  But it makes sense that they now seem to have 4-2 that they were delayed, recertified for boost clock, etc...
#74
joeeoh
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:10:05 (permalink)
gaubry
EVGA RTX 3080 XC3 Ultra, no crashes for my card yet. 


This is good to hear as an XC3 Gaming owner with LOTS of crashing. You should also list what you've been playing. I'm still confident, power caps aside, that the issue is also in large due to only having 1.0 driver. Nothing to roll back to or beta test really limits the breadth of speculation imo. 1 MLCC 5 POS BTW.


#75
TakingOnWater
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:10:09 (permalink)
gaubry
EVGA RTX 3080 XC3 Ultra, no crashes for my card yet. 

What's your POSCAP - MLCC ratio though?


#76
Nostyke
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:12:16 (permalink)
Crismac1
You would think if you charge $1800 for 3090 FTW ultra you would get 6 MLCC. If in fact, this is the problem causing crashing.
 
Hmm, I need to rethink and consider FE and TUF cards if this is true. I am definitely going to watch this story closely.



same, would be nice to get official confirmation on this that 3080 and 3090 ftw3 cards have 2 mlcc's.
so far 2 different posts on reddit confirmed users 3080 cards have 2x mlcc though so i feel a bit more relieved but its a bit conflicting with GN getting a 6x polys board
#77
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:16:03 (permalink)
Now we see why Asus Strix is considered the best card and not just "Paying for ROG" Branding. They got all 6 MLCC. 
#78
Desaccorde
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:18:23 (permalink)
Yeah, EVGA disappointed me this gen with their FTW3 approach to be honest. 1800Mhz against the main competitor's 1935Mhz and now this MLCC/POSCAP issue. Also GN's FTW3 has 6 POSCAP and users reporting 2+4... So now we have different productions as well or is this corrected and GN's was a sample?
 
Need more info on this but certainly off putting.
#79
YURIIII
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:20:26 (permalink)
I'm also thinking getting Strix OC instead of FTW3, if we are not getting answers for this issue. I'm not paying premium price for a "flagship" card that has limited clockability or possible stability issues on boost clocks because of few capacitors.
 
You gotta remember that STRIX OC promises 1935MHz boost clocks in OC-mode, which could be because of 6xMLCC. Strix OC is also a bit cheaper than FTW3 Ultra. It seems that FTW3 Ultra promises 1800MHz with 2x4 configuration not to mention FTW3-non ultras, do they have even 2MLCC:s, if this happens to be the case.
 
For what I understand MLCC-capacitors would be able to filter different frequencies (like 10nF, 30nF, 100nF, 330nF etc) where these POSCAP-capacitors has only one filtering frequency? Obviously they have other pros and cons aswell.
 
Better filtering = more stable on higher clocks
 
XC3 Black and XC3 = 0/6
XC3 Ultra and FTW3 = 1/5
FTW3 Ultra = 2/4
KINGPIN = 6/6
 
I hope this is not the case
 
IF this is the case, why would anyone buy non ultra-ftw3 for example, if its artificially limited by a capacitors.  It has higher power limit, bigger cooler, better vrm but doesn't clock, basically handicapped XC3 Ultra.
 
Hope we get someone to answer to these questions.
 
 
post edited by YURIIII - 2020/09/25 14:43:57
#80
amd20x6
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:20:35 (permalink)
This seems way overblown. There's nothing "cheap" about a tantalum capacitor, they're usually considered a premium part. Placement of ceramic cap arrays in lieu of 1-2 tants may or may not change end GPU behavior depending on the PCB layout and supporting circuitry.

I'll enjoy my 3080 regardless of what caps EVGA placed behind the GPU. If I have issues I'll RMA for a card with an updated BOM. That's why I'm buying EVGA- they take care of their customers.
 
The only verifiable fact I see here is that Gamers Nexus broke a Port Royal record on a "bad" FTW3. I don't think we're seeing the whole picture.
post edited by amd20x6 - 2020/09/25 14:23:33
#81
EVGANewMember2719
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:23:56 (permalink)
YURIIII
I'm also thinking getting Strix OC instead of FTW3, if we are not getting answers for this issue. I'm not paying premium price for a card that has limited clockability or possible stability issues on higher clocks because of few capacitors. You gotta remember that STRIX OC promises 1935MHz boost clocks in OC-mode, which could be because of 6xMLCC. It seems that FTW3 Ultra promises 1800MHz with 2x4 configuration not to mention FTW3-non ultras, do they have even 2MLCC:s, if this is the case.
 
For what I understand MLCC-capacitors would be able to filter different frequencies (like 10nF, 30nF, 100nF, 330nF etc) where these POSCAP-capacitors has only one filtering frequency? Obviously they have other pros and cons aswell, but this could be the case.
 
Better filtering = more stable on higher clocks
 
 




EVGA will probably only give you the 6x MLCC for the Kingpin Version. They want you to pay extra $$$$. 
#82
Crismac1
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:24:12 (permalink)
EVGANewMember2719
Crismac1
You would think if you charge $1800 for 3090 FTW ultra you would get 6 MLCC. If in fact, this is the problem causing crashing.
 
Hmm, I need to rethink and consider FE and TUF cards if this is true. I am definitely going to watch this story closely.




I backordered a Strix 2080 now from CDW. Just in case I need to return the FTW card that is in route to me. 

You are the man thanks been waiting for someone to backorder got an October 6 date est on delivery.


Oh and I know you meant 3080 :)
post edited by Crismac1 - 2020/09/25 14:28:49


 
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#83
pbmpharmacist
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:27:04 (permalink)
I just started looking into this but it LOOKS like anything other than Nvidia or Asus is garbage right now. And it's hardware so it's unfixable

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#84
pbmpharmacist
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:29:52 (permalink)
amd20x6
This seems way overblown.


Pun intended? Haha

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#85
jpotter
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:30:07 (permalink)
vgerik1234
EVGA 3090 FTW - 2 MLCC. It just arrived. 





Hey vgerik1234, would you mind filling out the information in this thread when you get a chance?: https://forums.evga.com/RTX-3000-Series-Capacitor-Issue-MEGATHREAD-m3094372.aspx 
#86
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:32:55 (permalink)
2x MLCC is Nvidia spec. So I'd be happy with that. Probably wont get a stable overclock as high as a GPU with 6x MLCC though. 
#87
gpkgpk
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:36:16 (permalink)
Worth repeating EVGA FTW3 pics https://imgur.com/a/IMVFdTP (Scroll down to 2nd pic)


#88
z999z3mystorys
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:38:25 (permalink)
yeah, seems the stock photo is old/inaccurate for the ftw3, I'm guessing the kingpin will have MLCC x6 however. (or is there an option above MLCC that exists? hmm)
#89
LordNVader
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Re: Igors Lab: Less MLCC, more crashing and lower clocks? 2020/09/25 14:38:43 (permalink)
gpkgpk
Worth repeating EVGA FTW3 pics https://imgur.com/a/IMVFdTP (Scroll down to 2nd pic)



Thats nice to know. So 2 shouldn't have problems since thats nvdias specs right
#90
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