I think he confused you with me, I made that joke. Yes, women are nice here and cheap
of course its speculation!
since quite some people read this and some even posted that they are worried about getting this or another 1156 board, i figured it might make sense to sum up what might have caused it and to list what people could do to avoid this from happening... the lowest vcore that you guys used and had it blow/melt a pad was 1.5v vcore though, right? so this def wont affect normal end users and even normal overclockers...
cirthix, kiwi, my bad... no idea why i confused you with each other
Are you sure? Do they store the maximum frequency ever in some registers? If so what is the purpose? I am just curious
Wprime over 5180 @ -102 Celsuis on an 870 with 8 threads yesterday and checked the socket today and found this;
This is the ASUS Maximus III ROG this time using the same 'Foxconn socket' as the GB board. Same corner of the socket as the others too - coincidence? CPU pads were clean for those wondering.The CPU that was in the ASUS board this time has some discoloured and mishapen VCC pads, although none have gone missing completely. Power draw was in the region of 20.5 amps on the EPS12V line. Factor 15-20% switching loss, and also some power to the VTT rail from that figure - so what around 160-170w to the CPU @ -100 is enough to light up the sh1thouse in some cases. Ran the same CPU in the EVGA board at 5.2 the day before and no problems (it uses a CPU socket from LOTE I think)
Not sure if its just the socket as the first CPU I had burned out a pad in the EVGA board although the socket took zero damage. The thing with the LOTE socket seems to be that it can handle the current, but that does not protect the CPU if there's a problem at the CPU side of things.
Last edited by Raja@ASUS; 09-29-2009 at 10:10 AM.
I just did a quick VCC pin check - looks like around ~ 175 VCC pins to i5 and around 250+ to i7. Power draw between both is very very close, i5 just is'nt designed for this kind of use under 8 thread loads (not that we did not already know...lol).
I should add at this point, if you run 8 thread Linx over 4.4GHz at ambient temps the power draw of some CPU's is very much the same as what I was pulling at near 5.2 @ -100. Only you don't have the luxury of the cooling preventing a serious burnout. So next time one of the stability boys harps on about needing to see 8 hours of Prime etc on 4.3GHz + OC's using the i5 platform , tell him to 'F*** O**!'.
Last edited by Raja@ASUS; 09-29-2009 at 10:53 AM.
Thx for the share Raja.
My 860 comes this week.....still not sure if i want to toss it in UD4P or UD6.
I think the phase will matter none at all as both use the same socket.
For every beginning there must be an end
Will be around to help with AMD specific hardware till shortly after BD launches, after that I'm Ghost
Last edited by Raja@ASUS; 09-29-2009 at 12:18 PM.
Last edited by Raja@ASUS; 09-29-2009 at 12:56 PM.
It was obvious all the time, that amps can burn the socket that way. I was testing Wprime and Vantage as well.. low frequencys at that point, but still a lot more load for the board.
I think we should just test lighter applications
You are as good as your samples are!
Seems to be clearer now whish for every body that should be fixed ...so the lesson is to be carefull now ^^
Thx for the share Raju (and I really liked your post up ahead : so true lol)
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32m, 3dmark, 01, 03 and 05 should be fine.
I only posted today because we had a few guys speculating in this thread that we don't know how to insulate or have too much lint in our sockets. I give the prize to the 1 VCC pin question myself
Just to be clear, is this risk present at the X58 i7's aswell? or does it have way more VCC pads?
Im not around for that long already, but no reports have been made regarding burned pads with the X58 i7's right?
This socket and the shape of it's pins suck...I told you....
There are more to come out of it in time......
INTEL PWA FOR EVER
Dr. Who my arss...
The LOTE socket has better pins (the EVGA sockets are better), but you guys don't forget you have 75 less VCC pads on i5. SO just looking at the socket pins shape as the cause is not going to cure this issue. i7 has over 250 VCC pins while i5 seems to have about 175. ALmost same current draw with less pads. I lost one VCC pad even on the LOTE socket (which by the way has the same kind of pins we saw on the i7 sockets). So failing a complete redesign of the pin and contact area (pad size/density/count), there is not too much that can or will be done at this stage.
Last edited by Raja@ASUS; 09-29-2009 at 10:14 PM.
well it does what its supposed to do... see it from their point, why should they spend even a fraction of a cent more per socket if its good enough for the rated specs intel asks them for?
thats what foxconn is great at, good enough for as cheap as possible...
i dont want to defend them, for ocing their sockets seem to suck...
thx for all the testing raja! great stuff!
are you sure its the vcc pins though and not vss pins?
wasnt it the vss pins that had diagonal rows 1 pin thick and vcc were 2 rows thick? it looks like there is one burned pin, then right to it 2 pins are barely burned or ok, and then theres a clearly singed pin again...
160W only can cause this... damn...
thats def achievable on air without even trying too hard...
i checked the intel docs but couldnt find any rating as to current draw per pin... theres just a max resistance per pin value i found...
i wonder if intels specs are that tight or if foxconn actually fails the specs intel asks for...
ps, its lotes, not lote afaik?
It is LOTES, just me being a bit hasty in typing and checking.
Whichever way you look at it, it's current draw related. 160+w is pushing the socket design quite hard it seems, and yes running Linx you can get to this quite easily over 4.3GHz, so people just need to be a little more cautious, no need to torture the design too much to prove its stable or otherwise.
Both times it has happened to me on two different CPU's (one was a real bad CPU for frequency only 4.8Ghz max), it has been when I have seen full load EPS 12v draw at 20.5 amps (both times different boards). PWM efficiency at these kinds of loads should be 80-85% at a guess, and then you have say 30-40w (guess) going to VTT as well, so 160-180w to VCC.
BTW even on the beefy pin sockets, the the contact point density is pretty much the same and limited by the pad design of the CPU. Real solution here would be just to have more VCC pads.
Last edited by Raja@ASUS; 09-29-2009 at 10:49 PM.