Simviation Forum - Freezing on long flights

Feb 24^th, 2009 at 2:43pm

stevehookem Offline
Colonel
Hello!

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Posts: 388

I am loving the i7! However there is one issue that I can't get resolved.

I wanted to test the sim and took off from IAH direct Paris by GPS. The autopilot is flying perfectly. I wanted to let it run in real time and land when it arrives.

I can never get that far. About 800-1000 miles into a flight (at least this last time, there is no set number but it's usually fairly far into a flight) like this, FSX freezes with the outside view still intact but the sound in a repetitive loop. Nothing moves and I can't quit out. I have to power down on the case.

Is this just something that I have to live with or am I missing something. My son is actually wanting to use this for flight training so long flights are a must.

What can I do?

i7 940 at 4.0ghz • Asus P6T Deluxe • 6gb OCZ Gold 1600 • BFG 285 Superclocked • Velociraptor 300gb HD • LG BlueRay Burner • Thermalright 120 cooler • PC Power 750W PS • Antec 1200 • Windows XP 64

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Reply #1 - Feb 24^th, 2009 at 4:32pm

NickN Offline
Colonel
FSX runs fine... the problem
is you or your system

Posts: 6317

list the Vcore , DRAM and QPI DRAM voltages being run

and if you are clocking the video card I would back off of that first and verify

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Reply #2 - Feb 24^th, 2009 at 11:43pm

stevehookem Offline
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Hello!

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Silly question: is there a utility that I can use to see these or do I need to go back into the BIOS?

I am only OCing the video card by about 10%. I'll back it off some.

Starting at about noon I took off from ATL in the A340 and got almost to the Canary Islands before my son wanted to fly this evening. I just let it fly as a test all day while I was out. No crash!

i7 940 at 4.0ghz • Asus P6T Deluxe • 6gb OCZ Gold 1600 • BFG 285 Superclocked • Velociraptor 300gb HD • LG BlueRay Burner • Thermalright 120 cooler • PC Power 750W PS • Antec 1200 • Windows XP 64

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Reply #3 - Feb 25^th, 2009 at 12:06am

NickN Offline
Colonel
FSX runs fine... the problem
is you or your system

Posts: 6317

addons can cause crashes too...

if DRAM is 1.65 and QPI DRAM is 1.35 I would nudge Vcore up just a touch and see if the crash stops.

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Reply #4 - Feb 25^th, 2009 at 11:21am

stevehookem Offline
Colonel
Hello!

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Posts: 388

I must be dense. I've OC'd before but this BIOS is new to me.

Here's what I see. Tell me if I missed something....

CPU Voltage=1.375
CPU PLL= auto
DRAM=1.64 (it jumps to 1.66. I can't get 1.65)
QPI DRAM=1.33750

I am stable at 4.07ghz with this--as far as the system is concerned. I was able to make a long flight last night without crashing in fsx.

Should something be adjusted?

i7 940 at 4.0ghz • Asus P6T Deluxe • 6gb OCZ Gold 1600 • BFG 285 Superclocked • Velociraptor 300gb HD • LG BlueRay Burner • Thermalright 120 cooler • PC Power 750W PS • Antec 1200 • Windows XP 64

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Reply #5 - Feb 25^th, 2009 at 1:57pm

NickN Offline
Colonel
FSX runs fine... the problem
is you or your system

Posts: 6317

stevehookem wrote on Feb 25^th, 2009 at 11:21am:

I must be dense. I've OC'd before but this BIOS is new to me.

Here's what I see. Tell me if I missed something....

CPU Voltage=1.375
CPU PLL= auto
DRAM=1.64 (it jumps to 1.66. I can't get 1.65)
QPI DRAM=1.33750

I am stable at 4.07ghz with this--as far as the system is concerned. I was able to make a long flight last night without crashing in fsx.

Should something be adjusted?

It looks like its in the zone

The DRAM is fine.. the QPI DRAM probably need to come up to 1.35.. try that first.

Is LOAD LINE CALIBRATION enabled or disabled on this?

If it is DISABLED that can cause it. LLC dampers the Vcore. When you enable LLC it sets the vcore to a constant and does not allow fluctuation assuming SpeedStep and CE1 are disabled in the CPU settings.

1.375 (1.38) is about right for 4GHz but that could also be a bit low.

I would start with 1.35 QPI/DRAM and if still crashing raise vcore to 1.39 and retest... 1.4 is where most end up @ 4GHz but that does not mean you will nor does it mean you must run 1.4

lower is always better if stable

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