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Fsx Crashes When Overclocked Beyond 3.8ghz

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I can successfully run FSX at 3.8GHZ however any time I go beyond 3.8Ghz FSX will crash. I just tried running at 3.94Ghz and got a crash with the following results:Faulting application fsx.exe, version 10.0.61637.0, time stamp 0x46fadb14, faulting module nvd3dum.dll, version 7.15.11.8048, time stamp 0x491b7aed, exception code 0xc0000005, fault offset 0x001effb6, process id 0xd78, application start time 0x01c9526ee1dd6def.Any ideas on how to remedy this? Thank you.

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Probably because you are pushing your system too far, every overclocked system has different limits, and will throw up different errors when it eaches those limits. I'm no expert but I'd hazard a guess that as the crash you are getting is related to an nVidia component, the graphics card or the OS is having difficulties at such a high overclock. Is your PCI-e bus being overclocked? How about your memory?Have you stress-tested your system as you apply each overclock to find a known stable limit you can reach without errors or crashes? If not, thats where to start. Also look into the PCI-e and memory bus speeds beyond 3.8GHz, and critically, the CPU temperature. Find the max CPU temperature for your processor from the manufacturer specifications and monitor it when overclocking to make sure you dont get near or over it. If you do and you want to overclock at that speed, you'll need much better cooling.

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I can successfully run FSX at 3.8GHZ however any time I go beyond 3.8Ghz FSX will crash. I just tried running at 3.94Ghz and got a crash with the following results:Faulting application fsx.exe, version 10.0.61637.0, time stamp 0x46fadb14, faulting module nvd3dum.dll, version 7.15.11.8048, time stamp 0x491b7aed, exception code 0xc0000005, fault offset 0x001effb6, process id 0xd78, application start time 0x01c9526ee1dd6def.Any ideas on how to remedy this? Thank you.
I have a similar problem with FS9. If I push beyond 3.925 GHz, FS crashes pretty quickly. My solution was just to run at a little over 3.8 GHz. I'm pretty happy with performance where it's at but, knowing why it happens would be nice. Just curious, is your situation that everything but Flight Sim runs great up around 4GHz? I know with my system, I can get up to about 4.1GHz with absolutely no problem. Temps, RAM, GPU all run great.I think Trelane uses a e8600 cpu and, IIRC, gets beyond 4GHz without issue. Sorry I don't have the answer.Best Regards,Jeff

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I have a similar problem with FS9. If I push beyond 3.925 GHz, FS crashes pretty quickly. My solution was just to run at a little over 3.8 GHz. I'm pretty happy with performance where it's at but, knowing why it happens would be nice. Just curious, is your situation that everything but Flight Sim runs great up around 4GHz? I know with my system, I can get up to about 4.1GHz with absolutely no problem. Temps, RAM, GPU all run great.I think Trelane uses a e8600 cpu and, IIRC, gets beyond 4GHz without issue. Sorry I don't have the answer.Best Regards,Jeff
That's exactly the problem. I can run my system pretty nicely at even 4Ghz but for some reason the only software that does not get along with the overclocking is FSX.

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That's exactly the problem. I can run my system pretty nicely at even 4Ghz but for some reason the only software that does not get along with the overclocking is FSX.
Try running OCCT Custom MIX and/or Prime95 Blend test for at least 4 hours. If it fails, your clock is not stable in relationship to the CPU and memory working together. Individua tests may succed but the combined tests may fail. FSX stresses the memory subsystem quite a bit and my guess is that you'll find your problem there.Check this thread to see what I went thru to resolve it.http://www.simviation.com/cgi-bin/yabb2/Ya...?num=1225569427Good luck! :)Vic

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Probably because you are pushing your system too far, every overclocked system has different limits, and will throw up different errors when it eaches those limits. I'm no expert but I'd hazard a guess that as the crash you are getting is related to an nVidia component, the graphics card or the OS is having difficulties at such a high overclock. Is your PCI-e bus being overclocked? How about your memory?Have you stress-tested your system as you apply each overclock to find a known stable limit you can reach without errors or crashes? If not, thats where to start. Also look into the PCI-e and memory bus speeds beyond 3.8GHz, and critically, the CPU temperature. Find the max CPU temperature for your processor from the manufacturer specifications and monitor it when overclocking to make sure you dont get near or over it. If you do and you want to overclock at that speed, you'll need much better cooling.
I ran the Prime torture test overnight and that was ok however the OCCT test reported that the CPU was too hot after about a minute. That's kind of odd since Realtemp never reported the CPU goin over 54C

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Try running OCCT Custom MIX and/or Prime95 Blend test for at least 4 hours. If it fails, your clock is not stable in relationship to the CPU and memory working together. Individua tests may succed but the combined tests may fail. FSX stresses the memory subsystem quite a bit and my guess is that you'll find your problem there.Check this thread to see what I went thru to resolve it.http://www.simviation.com/cgi-bin/yabb2/Ya...?num=1225569427Good luck! :)Vic
Thanks for that link Vic. It made for some good reading. Nick has helped me out alot too. It was nice to witness the birth of a new "guru". I'm pretty sure I'll never reach that distinction. :(The only mistake I made in building my current system was not going with the DDR-3 MB. Right now, I'm not sure I would want to go through everything for a .225 GHZ boost though. I'm running a 450MHz FSB at 8.5 now and my system is extremely stable. I'm guessing that my current BIOS is likely the issue though I'm not certain of that. If and when I decide to take the plunge into flashing my BIOS, I may give the 9 multiplier a try again, to see if FS will run @ 4.05 GHz. Best Regards,Jeff

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Prime95 and OCCT will not tax your system in the manner that FSX will. Just because you can run Prime95 or OCCT for what appears to be a stable clock, its no guarantee that your system will be stable when running FSX.

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I can successfully run FSX at 3.8GHZ however any time I go beyond 3.8Ghz FSX will crash. I just tried running at 3.94Ghz and got a crash with the following results:Faulting application fsx.exe, version 10.0.61637.0, time stamp 0x46fadb14, faulting module nvd3dum.dll, version 7.15.11.8048, time stamp 0x491b7aed, exception code 0xc0000005, fault offset 0x001effb6, process id 0xd78, application start time 0x01c9526ee1dd6def.Any ideas on how to remedy this? Thank you.
I find Orthos to be a good indicator as to whether I will have problems in FSX. Usually if I fail Orthos within the first half hour, I will not be able to run FSX without it crashing.

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Prime95 and OCCT will not tax your system in the manner that FSX will. Just because you can run Prime95 or OCCT for what appears to be a stable clock, its no guarantee that your system will be stable when running FSX.
What would you recommend as a better test? Thank you.

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I find Orthos to be a good indicator as to whether I will have problems in FSX. Usually if I fail Orthos within the first half hour, I will not be able to run FSX without it crashing.
I just ran the Orthos test and it crashed after about a minute so I guess there is some kind of problem but how do I proceed from this point? Thank you.

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I just ran the Orthos test and it crashed after about a minute so I guess there is some kind of problem but how do I proceed from this point? Thank you.
It usually means you have reached the limits of your CPU and or RAM. You can try to fine tune things like upping voltages, and changing other Bios settings. If you check out Nick N's posts, you will find a lot of good advise in how to proceed in this area.I used to have an E6850 on an Asus P5Q pro motherboard, and could only get it to run stable at 3.4 Ghz, no matter what I did. Sometimes you just get a dud chip.Bill

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It usually means you have reached the limits of your CPU and or RAM. You can try to fine tune things like upping voltages, and changing other Bios settings. If you check out Nick N's posts, you will find a lot of good advise in how to proceed in this area.I used to have an E6850 on an Asus P5Q pro motherboard, and could only get it to run stable at 3.4 Ghz, no matter what I did. Sometimes you just get a dud chip.Bill
Would you happen to have specific links for those posts? Thank you.

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Would you happen to have specific links for those posts? Thank you.
I would recommend you do a search using the keyword overclocking in this forum. However, you may find more generic, and better suited to your particular hardware, articles by doing an internet search on the keyword overclock guide.You must pass Prime95 and Orthos running on multi-cores reliably to avoid issues in FSX - or most intense titles. You can quit after about 30 minutes of the torture tests. I found on my rig that overclocking a single core wasn't entirely difficult and passed most tests easily. Getting all 4 cores to be stable was a completely different story, and FSX will use 3 near 100% from what I can tell.Good luck, and don't burn that CPU up :)PS: I had FSX running at 5.1GHz for about 30 minutes before I got cold feet and tuned it down to 4GHz on a QX9650 on H2O, +30% FPS average all things being equal. :)

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Can you report the difference in over-clocking in terms of FPS. I have a Dell 720H2C liquid cooled quad core at 3 ghz. I over-clocked it to 3.47 and want to push it to 3.7. I never noticed the difference in FPS's and want to know if it really worth it.Paul

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I just ran the Orthos test and it crashed after about a minute so I guess there is some kind of problem but how do I proceed from this point? Thank you.
First and foremost, what temperature did OCCT report when it crashed? What cooling are you running?Your overclock is definitely not stable but chances are there's a setting or two (or ten) that need to be changed in your BIOS to fix this (assuming your system isn't over-heating).Can you tell us what your voltage settings are in your BIOS? Also need to know your FSB and RAM clocks and timings.

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First and foremost, what temperature did OCCT report when it crashed? What cooling are you running?Your overclock is definitely not stable but chances are there's a setting or two (or ten) that need to be changed in your BIOS to fix this (assuming your system isn't over-heating).Can you tell us what your voltage settings are in your BIOS? Also need to know your FSB and RAM clocks and timings.
I dont remember the temperature that OCCT reported. I'm using stock cooling which I know is not the greatest. I'm definitely going to upgrade that soon. The following shows my BIOS settings when I am trying to achieve 4Ghz. Thank you for your assistance.MB Intelligent Tweaker (MIT)Robust Graphics Booster...........:AUTOCPU Clock Ratio...................:9XCPU Frequency.....................:4.00Ghz (422x9.5)CPU Host Clock Control............:ENABLEDCPU Host Frequency(Mhz)...........:422PCI Express Frequency (Mhz).......:100C.I.A.2...........................:DISABLEDPerformance Enhance...............:STANDARDSystem Memory Multiplier (SPD)....:2.66DMemory Frequency(Mhz).............:1125DRAM Timing Selectable ...........:MANUALStandard Timing ControlCAS Latency Time (tCL)............:5DRAM RAS# to CAS# (tRCD).........:5DRAM RAS# Precharge (tRP).........:5Precharge Delay (tRAS)............:18Advanced Timing ControlACT to ACT Delay(tRRD)............:AUTORank Write to READ Delay (tWTR)...:AUTOWrite To Precharge Delay (tWR)....:AUTORefresh to ACT Delay (tRFC).......: AUTORead To Precharge Delay (tRTP)....: AUTOStatic tREAD Value (tRD)..........:AUTOStatic tREAD Phase Adj............: AUTOCommand Rate (CMD)................:AUTOClock Driving and Skew ControlCPU/PCIEX Clock Driving Control...:800MvCPU Clock Skew Control............: NORMAL(G)MCH Clock Skew Control.........: NORMALSystem Voltage ControlDDR2 OverVoltage Control...:NORMALPCI-E OverVoltage Control.,.:+.10VFSB OverVoltage Control......:+.10v(G)MCH OverVoltage Control,:+.025CPU GTLREF1 Voltage*.......:AUTOCPU GTLREF2 Voltage*.......:NORMALLoadline Calibration..............:AUTOCPU Voltage Control...............:1.38125vNormal CPU Vcore..................:1.22500VAdvanced Bios FeaturesLimit CPUID Max to 3..............:DISABLEDNo-Execute Memory Protect.........:ENABLEDCPU Enhanced Halt(CIE)............:DISABLEDCPU Thermal Monitor 2.............:DISABLEDCPU EIST Function.................:DISABLEDVirtuaalization Technology........: DISABLED

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I dont remember the temperature that OCCT reported. I'm using stock cooling which I know is not the greatest. I'm definitely going to upgrade that soon. The following shows my BIOS settings when I am trying to achieve 4Ghz. Thank you for your assistance.
Stock cooling is not even remotely sufficient for the overclocking goal you have in mind. My E8400 reaches over 60 degrees C in OCCT with overkill case cooling and a mammoth heatsink with two 120mm fans on full blast. Given these facts I would say your CPU is likely overheating.Also, the setting "FSB over-voltage control" should be left alone or adjusted DOWNWARD for 45nm CPUs. I was stuck at 3.6GHz on my Gigabyte P35 board until I figured this one out. Now I can run 4GHz all day long no sweat.There's also a good chance you have to adjust your MCH voltage upwards. I need to run mine at 1.4V for the FSB/memory speed I run, you should be able to get away with a +.2 setting for 1.3V though. Looks like you're only running 1.125V on the MCH right now as you have a +.025 setting.

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Stock cooling is not even remotely sufficient for the overclocking goal you have in mind. My E8400 reaches over 60 degrees C in OCCT with overkill case cooling and a mammoth heatsink with two 120mm fans on full blast. Given these facts I would say your CPU is likely overheating.Also, the setting "FSB over-voltage control" should be left alone or adjusted DOWNWARD for 45nm CPUs. I was stuck at 3.6GHz on my Gigabyte P35 board until I figured this one out. Now I can run 4GHz all day long no sweat.There's also a good chance you have to adjust your MCH voltage upwards. I need to run mine at 1.4V for the FSB/memory speed I run, you should be able to get away with a +.2 setting for 1.3V though. Looks like you're only running 1.125V on the MCH right now as you have a +.025 setting.
Thank you. What sort of cooling would you recommend?

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Would you happen to have specific links for those posts? Thank you.
In addition to Nick's posts, you may want to take a look at the Xtreme systems forum here:http://www.xtremesystems.org/forums/index.phpThere is alot of system specific information that may help you out with oc'ing your rig.Like TechGuy said though, stock cooling isn't going to get it done when it comes to pushing these systems.Best Regards,Jeff

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Thank you. What sort of cooling would you recommend?
I linked to the cooler I'm using in my previous post. Keep in mind it comes with one fan, and I run a second fan for additional cooling so your results may vary. Otherwise Coolermaster's new V8 looks like a great cooler. Then there's the ThermalRight Ultra Extreme 120 aka TRUE 120 which seems to be the unofficial heatsink of choice for overclocking. Both should be available at Newegg. Keep in mind these are gigantic heatsinks that may not fit every system, so it would be wise to check the dimensions of each and compare to your system. Also be aware the TRUE 120 usually does not come with a fan, so you'll need a 120mm (or two).
In addition to Nick's posts, you may want to take a look at the Xtreme systems forum here:http://www.xtremesystems.org/forums/index.phpThere is alot of system specific information that may help you out with oc'ing your rig.Like TechGuy said though, stock cooling isn't going to get it done when it comes to pushing these systems.Best Regards,Jeff
I'll second the recommendation to check out XS. First place I go when I need more o/c'ing info.

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I linked to the cooler I'm using in my previous post. Keep in mind it comes with one fan, and I run a second fan for additional cooling so your results may vary. Otherwise Coolermaster's new V8 looks like a great cooler. Then there's the ThermalRight Ultra Extreme 120 aka TRUE 120 which seems to be the unofficial heatsink of choice for overclocking. Both should be available at Newegg. Keep in mind these are gigantic heatsinks that may not fit every system, so it would be wise to check the dimensions of each and compare to your system. Also be aware the TRUE 120 usually does not come with a fan, so you'll need a 120mm (or two). I'll second the recommendation to check out XS. First place I go when I need more o/c'ing info.
Thank you everyone for all of the info. I do try to read as much as I can on overclocking and I do visit various forums. The problem that I have is that each place has various or different info so it makes it really hard to know what's right, what's wrong, what;s recommended, and what's totally stupid. I wish I could find a guide or some articles that deal specifically with the Gigabyte GA-X48-DQ6 with an E8500 so that I can immediately apply the lessons learned as well be able to experiment with something that directly pertains to the articles or info.

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Thank you everyone for all of the info. I do try to read as much as I can on overclocking and I do visit various forums. The problem that I have is that each place has various or different info so it makes it really hard to know what's right, what's wrong, what;s recommended, and what's totally stupid. I wish I could find a guide or some articles that deal specifically with the Gigabyte GA-X48-DQ6 with an E8500 so that I can immediately apply the lessons learned as well be able to experiment with something that directly pertains to the articles or info.
Well, you can start with these. There are a number of threads about the board in this search.http://www.xtremesystems.org/forums/search...archid=10364914Unfortunately, after a very brief scan of a couple of the threads, the news isn't all that good with that particular board. Some of threads get long and you really have to read through them. Hope this helps.Regards,Jeff

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Thank you everyone for all of the info. I do try to read as much as I can on overclocking and I do visit various forums. The problem that I have is that each place has various or different info so it makes it really hard to know what's right, what's wrong, what;s recommended, and what's totally stupid. I wish I could find a guide or some articles that deal specifically with the Gigabyte GA-X48-DQ6 with an E8500 so that I can immediately apply the lessons learned as well be able to experiment with something that directly pertains to the articles or info.
XS has info on overclocking your motherboard, many using similar Wolfdale (E8000 series) chips. Replace your cooler, change the settings I've suggested, and if that doesn't deliver the results you'd like then check out this thread @ XS. Or just read the thread anyway, but don't go getting crazy ideas like running @ 4.5GHz on air ;)

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I linked to the cooler I'm using in my previous post. Keep in mind it comes with one fan, and I run a second fan for additional cooling so your results may vary. Otherwise Coolermaster's new V8 looks like a great cooler. Then there's the ThermalRight Ultra Extreme 120 aka TRUE 120 which seems to be the unofficial heatsink of choice for overclocking. Both should be available at Newegg. Keep in mind these are gigantic heatsinks that may not fit every system, so it would be wise to check the dimensions of each and compare to your system. Also be aware the TRUE 120 usually does not come with a fan, so you'll need a 120mm (or two). I'll second the recommendation to check out XS. First place I go when I need more o/c'ing info.
Is there any particular reason you would not choose this for cooling?http://www.newegg.com/Product/Product.aspx...N82E16835186134or this?http://www.newegg.com/Product/Product.aspx...N82E16835118223Thank you.

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