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Fixing Broken Pins - Phenom 955 - Page 11

post #101 of 134
Thread Starter 
What are we trying to determine exactly? And maybe I should just run 24 hours memtest86 (or memtest86+, or hci memtest 4 instances... im not sure, i usually just use prime95 24 hour test blend as my ram test after using hyperpi to fine tune it, and my ram at stock settings and overclocked 1348/cl7 runs hyperpi just fine, but i havent tested it exhaustively since 2 years ago)

edit.

On a side note, I can pass IBT 10 runs and basically any stress test but 6+ hours of prime95 blend on 1333mhz (i mean twice i made it up to 8-9 hours but this is over like 50 different configurations at least). I always fail p95 at 288fft lengfth, although i've failed at a few other lengths (1152, etc), all of them were 288fft length or above (ie not at 8).

Or, I could run a 24 hour memtest of some type (not exactly what would be best, memtest86/86+/hci) at stock settings. I mean obviously there's a faulty component in here, I think we all think its the IMC, but it's possible my RAM just sorta crapped out...? I mean, it is odd that even at stock 1333mhz at slightly raised vdimm 1.616, i cant pass p95, but it is entirely possible that within the last 2 years my ram went bad.

Is it possible something other than the imc as at fault? what about my dimm slots (maybe put my 2 sticks in the 2 slots further from the mobo instead). and would running ganged mode or a single stick solve this problem?
Edited by Belial - 11/18/12 at 1:31am
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post #102 of 134
Just try that test. The occt one which i recommended.
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post #103 of 134
Thread Starter 
Passed 3:30 small data set occt test. 3.6ghz, 1.472vcore, 1333mhzCL9 dual channel

I mean 6-9 hours is fairly stable. I think most people would just brush it off and say it's stable enough.

But it's interesting to have uncovered a consistent instability problem that only shows up at 6-9 hours of testing (i mean i'd say maybe half the time it'd crash within 4 hours, a little less than half the time, at 6 hours at 288fft length, and twice above 288 fft).

I can't really find much on other people saying the same problem, besides you saying you can only run a single stick of ram (did you try underclocking it like i did? what about running it ganged mode?).

Currently running 3.7ghz@1.472vcore, 1066mhz, 1.568vdimm (this is lowest my motherboard will do, its stock bios setting, its 1.6v in bios), going to run this for 24 hours (hopefully), and then my next test I think I'm going to try my 2 x Ram in the 2 other motherboard slots. That would rule out if the motherboard/dimm slots are to blame. Then, I'll run it on ganged mode, see if that changes anything. Then, maybe run it on 1333mhz with loosened timings... maybe should try single channel sometime too.
Edited by Belial - 11/18/12 at 4:59pm
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post #104 of 134
Do try that. Hope it does pass 24hrs p95. If it doesn't open a new thread specifically saying the exact test that it fails in p95.
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post #105 of 134
Thread Starter 
Well 3.7ghz/1.472vcore/1066mhzCL9 Dual Channel failed at 16 hours of prime95 (bsod 124). Im sure i can tweak something to make that work.
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post #106 of 134
Pins are such a broken design. I much prefer the "pins" to be on the motherboard. They're also more "loops" than "pins" which is even better. Some older chips used to use ball-bearings which was cool.
post #107 of 134
Quote:
Originally Posted by Belial View Post

Well 3.7ghz/1.472vcore/1066mhzCL9 Dual Channel failed at 16 hours of prime95 (bsod 124). Im sure i can tweak something to make that work.
Tad bit more of cpu nb voltage! The IMC of your chip is bad,this i know because as you lowered the ram frequency stability increased. I'm guessing the broken pins are right under the IMC part of your chip.
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post #108 of 134
Thread Starter 


H2, AL3, AL4, AK30, C1, are the broken pins

It's kind of a mishmash of where the broken pins are. I don't think the broken pins are an issue, i believe it's something like less than 2% of the 938 pins on the CPU are redundant/unnecessary, the chances that 5 of the broken pins are such is infinitesimally small, and would the unnecessary pins really be along the edges?

I mean maybe it is... there could be a million things going on here, I guess we'll just have to figure it out. Maybe i just got really lucky/unlucky and one of the pins didn't connect right but it's not a crucial pin. I mean I can understand if a pin isn't necessary, but are any the pins of such where "well if this pin is missing than your IMC will be slightly less good".

I should try a prime95 24 hour test on stock settings (after i attempt this 24 hour pass on moving sticks to other slots), see if the chip is damaged or just some odd overclocking headroom. And then it's still possible the RAM is faulty, although I have a feeling that any sort of memory test (memtest, 86+, etc) would pass even if it was slightly unstable, given how I can pass anything except 6-9+ hours prime95 blend even at 3.8ghz, tightened 1333mhz ram. Or maybe I should just do an exhaustive 24 hour memtest.... i'll work on that after 24 hour stock/24 hour switch dimm slots.
Quote:
Tad bit more of cpu nb voltage! The IMC of your chip is bad,this i know because as you lowered the ram frequency stability increased. I'm guessing the broken pins are right under the IMC part of your chip.

Really? I think cpu voltage would be just upped a bit to help on 3.7ghz. I did some playing at 3.8ghz, and it was struggling to not BSOD instantly on prime95. I was slowly upping voltage from 1.472 to 1.502, which went from hard, instant bsod, to 10 minutes reset, which is a good sign of increasing stability imo, but my point being that 3.7ghz is right about the limit of the chip i think. I mean maybe a little more cpu-nb voltage would have helped. It failed on 336fft length or 2560fft on the 4th core (the first 3 cores completed 2560, failure occurred either because of 336 on the first 3 cores or 2560 on the last core). Im not worried about it though, right now trying to figure out exactly what is going on - bad RAM, bad chip, bad mobo, if IMC has issues at overclocked or at all levels, if cpu-nb can be compensated or not. I mean frankly having to run ram at 1066mhz would be perfectly fine, wouldnt have much real world impact, but i'd like to know if i need to downlock my ram, or if my chip is screwed up at stock levels or when overclocked only or what.

Anyways, when I was first plugging in my RAM to the 2 other slots, I had some weird issues where it wouldn't boot up. Eventually with just a single stick moved from the 3rd to the 4th slot, it worked, and after that I couldn't recreate the problem. Kind of odd, I'm not sure what that means, The settings were set to 1.6vdimm (the lowest it'll go on my mobo, which is about 1.56voltage), 1066mhz. I dont know if it means anything, just kind of odd.
Quote:
Pins are such a broken design. I much prefer the "pins" to be on the motherboard. They're also more "loops" than "pins" which is even better. Some older chips used to use ball-bearings which was cool.

I prefer pins on the CPU. That way you can get certain chips for super cheap if they have bent pins, can't do that with Intel. I suppose you could have a similar thing with Intel motherboards, get them for cheap, but you can't really fix broken pins on an intel motherboard as easily as you can with AMD. I mean, if a pin breaks, your screwed, there is no wiring trick to get them to work.

i mean either way you are kinda screwed. I havent really seen anyone out there fix an AMD cpu like I did (although ive heard people mention it as advice), maybe it's possible to fix a broken intel mobo pin.
Edited by Belial - 11/19/12 at 8:10am
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post #109 of 134
Do you know where the IMC of your chip is?
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post #110 of 134
Thread Starter 
I'm assuming your getting at that on the actual deneb chip, the imc is on one of the edges...

but the actual deneb is a very tiny thing on the entire CPU. do pins line up in proportion to the cpu? and i have pins missing on multiple sides of the cpu...

I mean it's entirely possible one of the broken pins just isn't making contact, but being able to hit 3.6+ghz? i mean it's just odd.

http://www.xtremesystems.org/forums/showthread.php?260662-Crappy-Deneb-IMC&s=ab31725ba50c8a642af090d7b0368be1
here's some people saying their ram ran fine on another CPU, but on a deneb (especially c2 revision, although even c3 and thubans have a problem sometimes) they had to downclock the ram. Although I dont see anyone saying 1333mhz was a problem and had to go to 1066, most of them are saying 1600+ mhz, but I'll keep looking.

Apparently the issue is because a lot of these phenom ii's have both a ddr2 and ddr3 memory controller, and the ddr2 controller is kind of holding things back, and the ddr3 controller isn't that hot.

If a broken pin wasn't making contact, I could go back in and make sure all the pins are touching? I mean what I did was I stuck in a slightly larger copper wire in (which is still only like 2mm, very short, because when 'locking' the socket the pin comes out a bit), and then took a phillips head screwdriver and sort of mashed the wire into the socket, so its sort of like a ball at the point of contact to ensure good contact. I dont have any TIM anymore, although i suppose it doesnt really matter and i wouldnt need to replace the tim just to reseat the cpu.
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Phenom ii X4 955C2, $31, 5 broken pins, works! ... Biostar A770e3 6.3 Red&Black MSI GTX 460 768mb Twin Frozr II 2 x 2GB Kingston HyperX 1333 OC to 1348CL7@1.65v 
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