NEED HELP! corroded cpu pads!

[clutchmaster]

i gotba i5 3470 that i have overclocked to 4.3ghz and 3 pads have blackened/pitted i did not notice this after i upgrade to a 3770k and was running that at 4.2ghz for 3 months decided to redo the LM on it and did not see this issue after redoing my application of my delid i decided to push it farther and got it stable at 4.5ghz on a cryorig m9i 100mm cooler everything going great but my hotest core was getting 17 - 20 F higher then the coldest core so i toned it down to 4.4ghz and used it like that for 3 - 4 months before today which my mugan 5 arrived and i discovered i can direct die cool it which i didb but i noticed the samething has happened to my 3770k but to only a single pad in the same area as the 3470

could someone tell me what these pads are for?
is it possible that enabling PLL overvoltage could be the cause?  the only difference between the 4.2ghz and the 4.5ghz OS was that setting
asus p8z68 pro/gen3

[Guest]

I believe this is the correct orientation of what we are trying to look at. If it where the other corner, perhaps the cpu would not boot missing Vccio pad. 

 

So I circled what it is that I cannot read lol. 

SA_CS I think (2) ?? 

 

 

 

[clutchmaster]

14 minutes ago, ShrimpBrime said:

I believe this is the correct orientation of what we are trying to look at. If it where the other corner, perhaps the cpu would not boot missing Vccio pad. 

 

So I circled what it is that I cannot read lol. 

SA_CS I think (2) ?? 

this is the corrected image as it would look like if it was mounted in the cpu socket

[Guest]

Fuck I haven't looked a pinout diagram in a long time lol. Did some pin modding with socket 940 pin (server, not AM2) for that extra v-core.....

right mirror imaging. 

 

From what I can read.... VSS is a ground. The other two, be damned I can make it out. My eyes need assistance and it's not on my nose right now. lol

[clutchmaster]

3 minutes ago, ShrimpBrime said:

Fuck I haven't looked a pinout diagram in a long time lol. Did some pin modding with socket 940 pin (server, not AM2) for that extra v-core.....

right mirror imaging. 

 

From what I can read.... VSS is a ground. The other two, be damned I can make it out. My eyes need assistance and it's not on my nose right now. lol

the blue one is "SA_D  something 48

[Guest]

Not terribly sure to be honest. 

I am curious if the pads are missing opposed to corroded? 

Also, to help answer a question about the temp difference, I thought that was pretty common on these chips. Not super certain, don't quote me. I generally operated mostly AMD hardware.

[clutchmaster]

2 minutes ago, ShrimpBrime said:

Not terribly sure to be honest. 

I am curious if the pads are missing opposed to corroded? 

Also, to help answer a question about the temp difference, I thought that was pretty common on these chips. Not super certain, don't quote me. I generally operated mostly AMD hardware.

all the pads are there i scraped them to be sure they didnt fall off i found another diagram showing 2 of the pins are for bclk no idea if the pll overvolt setting plays a roll in bclk clocks

[clutchmaster]

here the image
https://abload.de/image.php?img=pins_clark4mfk.png

[clutchmaster]

temps i get at stock after direct die mounting my cooler

[clutchmaster]

after finding that 1 pitted pad on my 3770k and scraping it, it posts 5 seconds faster now i just thought it was slow because my 4 hdd took up that time though it was like that when i first got it

[papajo]

You are looking at it wrong first this is the pinout diagram of the lga socket (so the cpu goes on top of it ) the burned pads are K1,L1 and L2

 

 

And they are fried because of your OC

 

two of those are DMI connections which is basically what connects everything in the PC (north-bridge/south-bridge) consider yourself lucky that the computer still operates but you probably will encounter random issues such as corrupt data or restarts or BSods unless these particular pins are only important for things you dont use/have plugged in (like some sata port that is unpopulated or what not) 

 

There is also a chance to cause more severe damage to your system if those pads need to be triggered at somepoint when you do something with your pc so I would advise you to change your cpu  and also the motherboard if possible. 

[clutchmaster]

1 minute ago, papajo said:

You are looking at it wrong first this is the pinout diagram of the lga socket (so the cpu goes on top of it ) the burned pads are K1,L1 and L2

 

 

And they are fried because of your OC

 

two of those are DMI connections which is basically what connects everything in the PC (north-bridge/south-bridge) consider yourself lucky that the computer still operates but you probably will encounter random issues such as currpt date or restarts or BSods unless these particular pins are only important for things you dont use/have plugged in (like some sata port that is unpopulated or what not) 

 

There is also a chance to cause more severe damage to your system if those pads need to be triggered at somepoint when you do something with your pc so I would advice you to change your cpu  and also the motherboard if possible. 

there paads dude as long as they pass electricity without a high resistance the cpu and board will be just fine aka i could just solder the pads so theres a low resistance material there since only the gold is gone

[clutchmaster]

6 minutes ago, papajo said:

You are looking at it wrong first this is the pinout diagram of the lga socket (so the cpu goes on top of it ) the burned pads are K1,L1 and L2

 

 

And they are fried because of your OC

 

two of those are DMI connections which is basically what connects everything in the PC (north-bridge/south-bridge) consider yourself lucky that the computer still operates but you probably will encounter random issues such as currpt date or restarts or BSods unless these particular pins are only important for things you dont use/have plugged in (like some sata port that is unpopulated or what not) 

 

There is also a chance to cause more severe damage to your system if those pads need to be triggered at somepoint when you do something with your pc so I would advice you to change your cpu  and also the motherboard if possible. 

if i take the corrected image and flip it in the way that the top stays at the top it will match the real life image i provided of my 3470

[clutchmaster]

8 minutes ago, papajo said:

You are looking at it wrong first this is the pinout diagram of the lga socket (so the cpu goes on top of it ) the burned pads are K1,L1 and L2

 

 

And they are fried because of your OC

 

two of those are DMI connections which is basically what connects everything in the PC (north-bridge/south-bridge) consider yourself lucky that the computer still operates but you probably will encounter random issues such as currpt date or restarts or BSods unless these particular pins are only important for things you dont use/have plugged in (like some sata port that is unpopulated or what not)

There is also a chance to cause more severe damage to your system if those pads need to be triggered at somepoint when you do something with your pc so I would advice you to change your cpu  and also the motherboard if possible. 

aditionally when i was runing a 4.2ghz oc and after months of running like that on my 3770k i inspected the bottom cause i had to clean the pads sines i was trying to get my hotest core colder and the 1 and only 1 pin on the 3770k was not pitted it was perfect! after reassembly i pushed it to 4.5 for benchmarks then pulled the core to 4.4 and dropped the voltage because the heat difference between the core
the critical difference between the 2 oc is i had PLL OVERVOLTAGE ENABLED for months after i pulled it back to 4.4

[clutchmaster]

and only today i pulledbit apart to discover that pin is pitted the i5 3470 has pins specificaly for frequensy which is why u can only adjust the multiplier to 4.0 ghz and to get any farther u have to use the bclk clocks and yes i had the PLL OVERVOLTAGE ENABLED on the 3470 and that ran like that for 2 years and the only bsod's was cause i F'ed up mybram oc

[clutchmaster]

one critical piece of information im trying to determine is, is it the PLL OVERVOLTAGE the cause of the pitting. and are these pads related to the PLL 

[papajo]

43 minutes ago, clutchmaster said:

there paads dude as long as they pass electricity without a high resistance the cpu and board will be just fine aka i could just solder the pads so theres a low resistance material there since only the gold is gone

You clearly dont understand how electronics work but its your computer so be my guest

 

40 minutes ago, clutchmaster said:

if i take the corrected image and flip it in the way that the top stays at the top it will match the real life image i provided of my 3470

yes you are right on that my bad

 

So the affected pads are DBR# (Data bus reset) BCLK_ITP and BCLK_ITP# (system buss clock signals tap signals) 

 

BCLK is used for differential clocking, not being able to signal it  may introduce EMI and jitter and bad or no power state scaling you may also find issue in deep sleep state since it calls for bclk but I believe those ports (ITP/ITP#) are connected in parallel for debug reasons so you may be fine

 

[Guest]

15 minutes ago, clutchmaster said:

one critical piece of information im trying to determine is, is it the PLL OVERVOLTAGE the cause of the pitting. and are these pads related to the PLL 

I think it's pretty crazy the pads got burn. 

I'm going to assume the pad is gold plated? and the gold burnt or melted off? 

 

Well, from background, and speaking of grounds, that may have been all it was. That's why people clean those pads with alcohol, ground points are pretty important. 

 

Could it have anything to do with PLL overvoltage?

Well sure, it could have. Or you fry the PLL chip.

Or burn a pad off the chip I guess from the looks of it.

 

I for one don't have a direct answer, @Beerzerker might know a bit more in depth of this sort of thing maybe. 

But with overclocking, there's all sorts of risks. Anything can happen.