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Thread ID: 116733 2011-03-17 21:47:00 Problems with new sandybridge build dugimodo (138) Press F1
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1187154 2011-03-31 19:48:00 I have put everything back together as originally built and enabled all the onboard devices again, RAM voltage is still set at 1.56. PC remains stable :)

:thanksguys for all your patience and suggestions

I feel a little sheepish, we started out(me included) suspecting RAM, and after a couple weeks of mucking around trying all kinds of things it turns out to be.... The RAM :groan:

I have a ticket in with corsair support to see what they have to say, this RAM is one of the 3 modules they gaurantee compatible with the non-B3 version of my board.

But as long as it remains stable I don't think I will be messing with it any time soon. 		dugimodo (138)
1187155 2011-04-03 22:11:00 So are things still working for you? I have been fighting with the same problem but it takes up to 3 days for the hang. My memory is on the approved list, 2 x 4GB - GSKILL F3-10666CL7D-8GBRH. I also have an identical machine set up with same processor/memory/motherboard that runs flawlessly, but it is just a server so not much graphics. Both machines had the original recalled chipset. I was hopeful that the replacement mother board would fix my issue, but it had not impact.

I have played with BIOS XMP vs auto settings and it doesn't seem to have any impact. I have been using the on-board graphics to drive dual monitors. My latest change is putting in an nvidia card and it has now been running for 24 hours in a stress situation.

Your thoughts that it is a timing or interaction issue between the processor and memory could explain this. Changing from on-board graphics could impact the memory access pattern just enough.

So what is the bottom line for your solution? Was it just changing the voltage of your memory? You still have the original 2x4gb modules? You have been using a discrete graphics card all along, correct? 		emkquinn (16282)
1187156 2011-04-03 22:26:00 I have put everything back together as originally built and enabled all the onboard devices again, RAM voltage is still set at 1.56. PC remains stable :)

:thanksguys for all your patience and suggestions

I feel a little sheepish, we started out(me included) suspecting RAM, and after a couple weeks of mucking around trying all kinds of things it turns out to be.... The RAM :groan:

I have a ticket in with corsair support to see what they have to say, this RAM is one of the 3 modules they gaurantee compatible with the non-B3 version of my board.

But as long as it remains stable I don't think I will be messing with it any time soon.

Is your board B2?....are you not concerned with SATA bug? 		SolMiester (139)
1187157 2011-04-03 22:28:00 Yes it's still stable and the only change that made a difference was the memory voltage, bumped up from 1.5V to 1.56V. Other threads I've read had different solutions so it's a wierd one.

Yes discrete graphics the whole time, but not the same one - 2 x GTX 460, tried in SLI and each by itself, also tried an HD4850 - various drivers as well. At one stage I disabled everything non-essential in the BIOS in a fit of frustration.

I have still got the corsair 2x4GB but corsair have suggested I RMA it, haven't quite decided on that one as I'm not convinced it's faulty Then again it won't work at 1600 settings and it should.

If you have two machines are they both using the exact same RAM ? perhaps try swapping it over. My new machine initially ran almost a week before this started happening.

I'm considering getting a kingston hyper X 4G dual channel kit then RMA'ing the corsair RAM -after two weeks of fighting this thing I don't want to disable it while I wait for more RAM

Edit - as for Solmeisters question - my board is the B3 stepping but Corsair don't list it on their site so I used the earlier one to find RAM suggestions - figured the only difference was the SATA fix 		dugimodo (138)
1187158 2011-04-03 22:32:00 Yes it's still stable and the only change that made a difference was the memory voltage, bumped up from 1 . 5V to 1 . 56V . Other threads I've read had different solutions so it's a wierd one .

Yes discrete graphics the whole time, but not the same one - 2 x GTX 460, tried in SLI and each by itself, also tried an HD4850 - various drivers as well . At one stage I disabled everything non-essential in the BIOS in a fit of frustration .

I have still got the corsair 2x4GB but corsair have suggested I RMA it, haven't quite decided on that one as I'm not convinced it's faulty Then again it won't work at 1600 settings and it should .

If you have two machines are they both using the exact same RAM ? perhaps try swapping it over . My new machine initially ran almost a week before this started happening .

I'm considering getting a kingston hyper X 4G dual channel kit then RMA'ing the corsair RAM -after two weeks of fighting this thing I don't want to disable it while I wait for more RAM

Edit - as for Solmeisters question - my board is the B3 stepping but Corsair don't list it on their site so I used the earlier one to find RAM suggestions - figured the only difference was the SATA fix

Yeah, I ordered the 2x4Gb HyperX for my SB build, and I took great pains to get a combo where the RAM was QVL on an affordable board that was in stock! 		SolMiester (139)
1187159 2011-04-03 22:34:00 Is your board B2?....are you not concerned with SATA bug?

B3 - Post #4 		Speedy Gonzales (78)
1187160 2011-04-03 22:39:00 The QVL is a right pain, reading through lists of products comparing the codes is headache inducing! also very hard to find any of them available for my board.

Not to mention that products not on the list may have a product code that differs by one or 2 letters.

But lesson learnt,next time I will be doing what you did and attempting to find a combo that's on the list, how I got mine was simply by picking the board on CL website, then picking combo deal, choosing RAM that looked good on the list....

I did pay CL $50 for a precheck - not sure what they do for it but perhaps they should check the list and at least mention if your selection isn't on it :( 		dugimodo (138)
1187161 2011-04-03 22:40:00 Specs:
Gigabyte GA-P67A-UD4-B3
i5 2500K
8G DDR3 dual channel corsair RAM
Palit GTX460 x 2 in SLI
Ccorsair TX850 PSU
WD black 1 TB hdd


post 1 actually :) 		dugimodo (138)
1187162 2011-04-03 22:43:00 Yes, exact same memory, same mobo, i7-2600 vs i7-2600k processor. Both on-board graphics but very different usage. My web server, still on the original v1 motherboard runs flawlessly, only rebooting for windows updates. But it just drives a 1280x1024 monitor. My dev machine runs dual monitor 2500x1600 + 1600x1200. As a development machine, the on-board graphics does surprisingly well for this setup and keeps my machines energy consumption at just 35watts. Except possibly this little hang issue.

First I am going to try your trick with the memory voltage.
Next, I'll try swapping memory between the machines.
Lastly, I'll just swap hard drives between the two machines (windows activation might complain since the processor/mobo id's will be different from installation). This will tell me if it is something in the way I use the machines such as the difference in monitor setup or something in the hardware itself. Wouldn't tell me what is wrong but could hugely divide the possibilities.

Thanks for the insights. 		emkquinn (16282)
1187163 2011-04-03 22:44:00 The QVL is a right pain, reading through lists of products comparing the codes is headache inducing! also very hard to find any of them available for my board.

Not to mention that products not on the list may have a product code that differs by one or 2 letters.

But lesson learnt,next time I will be doing what you did and attempting to find a combo that's on the list, how I got mine was simply by picking the board on CL website, then picking combo deal, choosing RAM that looked good on the list....

I did pay CL $50 for a precheck - not sure what they do for it but perhaps they should check the list and at least mention if your selection isn't on it :(

I think the issue most of the time is the board doesnt know the correct timings and voltages for the RAM (AS not on QVL) and just uses default settings, this leaves the RAM unstable, causes freezing and lockups....however, if you know your way around a BIOS and the umpteen different memory settings, you can set them yourself and get a stable system... 		SolMiester (139)
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