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From i3-540 to i7-870 ... unstable.

post #1 of 53
Thread Starter 
Hi!

I've built the following machine in December '10, which was rocksolid:

- Gigabyte P55M-UD2 Rev 1.1 (BIOS F11), 4 x 2 GB KVR1333 Kingston RAM, Intel i3-540 @ 3.06 (stock), XFX HD5770 1G, Coolermaster Extreme Power Plus 500W.

One week ago, I sold the i3-540 and dropped an i7-870, which I needed to accelerate C++ compilation.

Result: video freezes (with TDR bugcheck in Windows) and lockups in Linux, even browsing or doing anything with light cpu/gpu load.

I did not clear the CMOS, but it's necessary? Most parameters seems to be OK.

I don't know where to start, altough I went to BIOS and noted that the following changes made the system far more stable:

- Line load calibration: AUTO---> Disabled
- EIST: Enabled ---> AUTO
- C1E: Enabled --->AUTO
- C3/C6: Enabled ---> AUTO (This disables C3/C6 so I get only 3.1GHz Turboboost instead of max 3.6GHz).
- Memory Performance Enhance: Turbo
> Standard

May be I can go 100% stable lowering features, but e.g I want turboboost feature since I also ran some 1 and 2-thread utilities frequently! (and some games for my son biggrin.gif) .

I'm technically wise, programmed drivers, x86 assembly,etc, but I feel lost.

Where to start?

Thank you!

PD: Recently passed 10 hours of Memtest86+. Zero errors.
post #2 of 53
Clear CMOS is necessary.
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post #3 of 53
For sure clear cmos.
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post #4 of 53
Thread Starter 
Right, I'll do that first. I expect to be able to use all features such as Turboboost and power-saving at stock clocks.

Let me ask two more questions, please:

1) It's necessary to increment Qpi/VTT if 4 DIMMs are installed? I'm at defaults (worked in the i3 flawlessly but don't know with the i7 and it's integrated PCIe controller,etc)

2) Can I use 1T Command Rate for increased memory bandwidth if I achieve stability at 2T? I'm in 2T ( all to SPD/Auto).

Thanks.
post #5 of 53
1) It probably is necessary. The best way to test for stability in my opinion is LinX or Intel Burn Test on max memory. 20 passes should do. If you fail, increase the QPI/VTT as necessary until stable.

2) You should be able to run 1T no problem. To be safe you could run 1 pass of memtest86+ on the 1T setting. If you do decide to run 1T, make sure you set it first and then check for stability using LinX/IBT; don't do it in reverse order.
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post #6 of 53
Thread Starter 
I still didn't clear CMOS as my son is still building homes with Sims 3 (he does not care much about 'life' but he likes to construct houses rolleyes.gif ).

3 hours and still no crashes.

I'll keep reporting. I think I modified LLC setting after the last BSOD. There is a possibility of Loadline calibration setting affecting something at stock clocks?
post #7 of 53
Your should clear cmos even after removing a video card and putting it in a diff pci/pcie slot. Processor definitely requires a clear. It takes literally less than 10 seconds and will allow your board to sort out all the changes. Alot changed with that processor, ram mulitplier, fsb, proc multi.... Just saying
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post #8 of 53
Quote:
Originally Posted by Hatfieco;14407538 
Your should clear cmos even after removing a video card and putting it in a diff pci/pcie slot. Processor definitely requires a clear. It takes literally less than 10 seconds and will allow your board to sort out all the changes. Alot changed with that processor, ram mulitplier, fsb, proc multi.... Just saying

After removing a video card laugher.gif

I never clear cmos unless I have an issue with an overclock that requires it. Usually a reboot is enough. When i swap cpu's or get a new board, first thing I do is go to bios and make changes, thus I don't have a need to clear cmos.
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post #9 of 53
Quote:
Originally Posted by indiocolifa;14407493 
I still didn't clear CMOS as my son is still building homes with Sims 3 (he does not care much about 'life' but he likes to construct houses rolleyes.gif ).

3 hours and still no crashes.

I'll keep reporting. I think I modified LLC setting after the last BSOD. There is a possibility of Loadline calibration setting affecting something at stock clocks?

Sims 3 is a valid way to stability test? Great, that's what I'm going to use from now on. So 3 hours and I should be good?
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post #10 of 53
Thread Starter 
Quote:
Originally Posted by Dopamin3;14407568 
Sims 3 is a valid way to stability test? Great, that's what I'm going to use from now on. So 3 hours and I should be good?

Haha! No, my claim was scientifically invalid. But Sims 3 did crash after 1 hour in the last week biggrin.gif

What I wanted to say was that I can't take my son out of my box. I'll make serious testing when he's in bed.
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