OCed Q6600 on P6N SLI- intermittant blue screens

[spdfreak]

It is running at 9x333 with 2GB Corsair XMS 6400, XP Pro, voltages are all default, RAM timings are defaults at 1:1 so it is no where near its limits. The blue screen usually only pops up during internet browsing and email and say something like "tried to write to read only memory" and then it reboots before I can read anything else. But it will run 8 hours straight encoding video with all 4 cores at 100% with no problems. The windows error report page says it is a device driver or hardware error. That's a big help! Anyone have any suggestions? Memory voltage, NB voltage, etc?

 

[jadeiceman]

Did you try running Memtest86+? Maybe there's a problem with the ram.

 

[SolMiester]

BSOD is either hardware drivers or RAM......IE browsing?......memory read\write error corrupted the O\S shell I would guess.

What voltage have you got on the XMS?

 

[spdfreak]

Originally posted by: SolMiester
BSOD is either hardware drivers or RAM......IE browsing?......memory read\write error corrupted the O\S shell I would guess.

What voltage have you got on the XMS?

Firefox for the browser... 1.8V (default) on the memory.

 

[n7]

Prime95 25.6 small FFTs for CPU
Blend for both CPU/RAM
Memtest86+ for RAM specifically

Start testing.

 

[Drsignguy]

Originally posted by: n7
Prime95 25.6 small FFTs for CPU
Blend for both CPU/RAM
Memtest86+ for RAM specifically

Start testing.

Yup, Do this first, then...................

Try loosening the timings too. you just might have too, I did and it made a difference.

I had BSOD's only when running F@H and by loosening them, it helped and no more BSOD's.

 

[taltamir]

the default ram multi for a Q6600 is not 1:1, its 3x fsb, you need to lower it to 2.4x fsb (1:1 = 2x FSB)

333 x 3 = 999mhz, that is the speed you are now running your ram unless you changed your ram multiplier.

Your ram "XMS 6400" is PC2-6400 XMS (xtreme memory something, aka, good timing), which means that with extra voltage (above the default of 1.8v) it could maintain good timings at DDR2-800, aka 800fsb.

So you need to change your ram multi so it runs at 800mhz (333x 2.4 = 800) instead of 1000mhz, and then I suggest you increase the voltage to what corsair recommended for your ram, and then set the timings manually to what they recommended for a little juice up in performance.

When you are done with that. run memtest+ from memtest.org
Get 5 full test passes (a single pass can take several hours!)
If you have a SINGLE error then your ram is being pushed too hard.

PS. If it was running 1:1 then your ram would have been at 333 x 2 = 666mhz. Which is a serious underclock, and completely pointless, just loosing performance for no reason.

 

[spdfreak]

Originally posted by: taltamir
the default ram multi for a Q6600 is not 1:1, its 3x fsb, you need to lower it to 2.4x fsb (1:1 = 2x FSB)

333 x 3 = 999mhz, that is the speed you are now running your ram unless you changed your ram multiplier.

Your ram "XMS 6400" is PC2-6400 XMS (xtreme memory something, aka, good timing), which means that with extra voltage (above the default of 1.8v) it could maintain good timings at DDR2-800, aka 800fsb.

So you need to change your ram multi so it runs at 800mhz (333x 2.4 = 800) instead of 1000mhz, and then I suggest you increase the voltage to what corsair recommended for your ram, and then set the timings manually to what they recommended for a little juice up in performance.

When you are done with that. run memtest+ from memtest.org
Get 5 full test passes (a single pass can take several hours!)
If you have a SINGLE error then your ram is being pushed too hard.

PS. If it was running 1:1 then your ram would have been at 333 x 2 = 666mhz. Which is a serious underclock, and completely pointless, just loosing performance for no reason.

Yep, it is running at 1:1 (666) so that it will run at 1T which gives slightly better benchmarks than running it faster at 2T. For all practical purposes, I'm sure it makes no difference... 1.8 is the rated voltage for this RAM. I'm sure running it at 1.9 would be fine, but at 666 it shouldn't need it. I have seen some guys complain that their MSI 650i boards wouldn't run at 333fsb without a bump in the NB voltage, but mine booted and ran fine right from the start. At any rate, I will run memtest86 on it tonight after I'm done recording the Olympics in HD. First things first! Thanks.

 

[VirtualLarry]

1T? Dont run 1T.

 

[Pentacore]

I had the same CPU as you and the same mobo and was getting BSOD. I yanked my 2 sticks of Patriot memory and put in some new memory and the errors went away. Like you my BSODs came when just doing random things like web surfing or whatever. I suspect your ram.

 

[spdfreak]

I ran memtest for 8 hours last night with no errors... what next next? It will run orthos all night as well.
VirtualLarry- Any specific reason I shouldn't run 1T?
Pentacore- what memory did you end up using?

 

[dclive]

Originally posted by: spdfreak
It is running at 9x333 with 2GB Corsair XMS 6400, XP Pro, voltages are all default, RAM timings are defaults at 1:1 so it is no where near its limits. The blue screen usually only pops up during internet browsing and email and say something like "tried to write to read only memory" and then it reboots before I can read anything else. But it will run 8 hours straight encoding video with all 4 cores at 100% with no problems. The windows error report page says it is a device driver or hardware error. That's a big help! Anyone have any suggestions? Memory voltage, NB voltage, etc?

Have you tried debugging the dump? No help if it's hardware, of course, but if it's software it will help a lot. Post output of !analyze -v if you like and we can look. (See my .sig)

 

[spdfreak]

I changed the memory config to 800, 2T and 1.9v and haven't had a blue screen yet. Maybe it didn't like the 1T. If I get another one, I'll definitely post the file. Thanks.