Simviation Forum - FSX lockups

May 6^th, 2009 at 4:23pm

SubZer0 Offline
Colonel
KLNA

Gender:
Posts: 3882

Hello,

Whenever I fly a long flight (30+ minutes), FSX usually locks up and nothing can be done to the computer... FSX just freezes and I try to minimize it, close it, bring up the desktop or task manager and FSX just taunts me on the screen laughing at me... LOL

My guess is that my CPU voltages are too low or that my GPU clocks are too high and is overheating, causing the system to lock up...

I've raised the fan speed on the GTX 260 (originial version) to 60% from its stock 40% and that has apparently reduced idle temps at least. I've also raised my CPU voltage (i7 920 @ 3.8) from 1.2875v to 1.33v and the RAM voltage to 1.66 from 1.64

I've tried these things only so far and haven't tested, but I'm still looking for ideas or even an answer here.

Thank you all for taking a look and I appreciated any responses,

Andy

i7 920 @ 3.8... 1.33v
P6T Deluxe
GTX 260 (original) from 576/1242/999 to 676/1457/1250
6GB DDR3 1600 7-7-7-25 running @ 1524mhz

Back to top

IP Logged

Reply #1 - May 6^th, 2009 at 6:08pm

jwenham Offline
Colonel
Clear to Land... Are you
sure?

Posts: 266

People with the 920's are finding that they need a higher QPI voltage to stay stable. I would set VCORE and QPI to 1.35 and see if that will boot and stay stable for 1hr in OCCT. If it checks out then optimize the voltages 1 notch at a time testing with OCCT. You will prob find that the QPI needs to stay at 1.35 or even higher. I wouldnt go over 1.38 for either voltage.

Intel i7 940 2.93 clocked to 4.0ghz Asus P6T Deluxe 6gb OCZ 1600 8-8-8-24 EVGA GTX 260 Superclocked Edition Thermalright 120 CPU Cooler Power PC & Cooling 750w PSU 1 tb Seagate Barracuda HD 500 gb Seagate Barracude HD 22" Viewsonic Widescreen Track IR 4 XP Pro x64 www.fairtax.org

Back to top

IP Logged

Reply #2 - May 6^th, 2009 at 8:05pm

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

Posts: 6317

QPI is safe through 1.42 as long as DRAM is 1.60-1.69 (which is also safe)

I would make sure QPI is 1.37 and DRAM 1.65-1.66. If still locking, raise vcore. It usually takes 1.40 to to 4GHz on a 920. 3.8 is not going to be far behind that.. perhaps 1.35.

Back to top

IP Logged

Reply #3 - May 6^th, 2009 at 8:40pm

SubZer0 Offline
Colonel
KLNA

Gender:
Posts: 3882

Thanks boys, I'll try those numbers after work. What worries me with setting vcore to 1.35 is the temps... Hopefully OCCT will pass with those numbers

Back to top

IP Logged

Reply #4 - May 6^th, 2009 at 9:03pm

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

Posts: 6317

hmmm.. well, if you dont have AC set to 79 in south florida that could present a problem as summer approaches.

there is one other HSF out there that may shave another c or 2 off the temp but but for the most part its equally matched to the TRUE 1366

Prolimatech Magalems

Back to top

IP Logged

Reply #5 - May 6^th, 2009 at 10:14pm

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

Posts: 6317

actually.. I take that back.. they are about equal

It tough with these coolers... right now all the hardware sites are doin their 'just before school is out" BS routines for clocking heatsinks

The TRUE is still a solid contender and although there are a few others that may shave off 5c they require double fans @ 1500+ be used.. you could do that with the TRUE and probably shave off the temp

Back to top

IP Logged

Reply #6 - May 6^th, 2009 at 10:39pm

SubZer0 Offline
Colonel
KLNA

Gender:
Posts: 3882

Hey Nick,

I just finished the OCCT test and it passed with a max temp of 66c (from RealTemp). I'm sitting comfortably on that with this TRUE cooler Wink

I'm using the numbers you suggested. QPI/DRAM voltage @ 1.37v and vcore @ 1.35v

The GPU is still running comfortably at 60% fan speed with about 3-5c shaved off at idle! Shocked

The AC here is usually set to 72-75f so that should be fine. Now off to some FSX testing

Back to top

IP Logged

Reply #7 - May 7^th, 2009 at 12:57am

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

Posts: 6317

80c be max

as long as its under that.. you're good

Back to top

IP Logged

Reply #8 - May 8^th, 2009 at 11:01pm

SubZer0 Offline
Colonel
KLNA

Gender:
Posts: 3882

Oh boy... It just did it again about 5 minutes ago.. even with the vcore raised quite a bit. So now I'm thinking it's the video card maybe. The frame on the screen will just be frozen, but the sound will keep on playing. However, I can't do anything on the screen at all but move the mouse cursor around.

I think I'm going to have to reinstall. Backing up now Undecided

Back to top

IP Logged

Reply #9 - May 8^th, 2009 at 11:36pm

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

Posts: 6317

video card clocked too high will do that too

Assuming heat is not a factor and CPU 3.8 and 1.4v with QPI/DRAM 1.42 does the same thing .. I would say either memory timing, possibly some skew needed for CPU or the video card clock

Back to top

IP Logged

Reply #10 - May 8^th, 2009 at 11:40pm

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

Posts: 6317

I would set QPI/DRAM @ 1.37, vcore 1.35, DRAM 1.66 and work

CPU Differential Amplitude: .800mv
CPU Clock Skew: (100ps if used to stablize clock)
IOH Clock Skew : (100ps if used to stablize clock)

careful with skew.. try amplitude alone first

Back to top

IP Logged

Reply #11 - Jun 20^th, 2009 at 6:06am

Extremer Offline
2nd Lieutenant
Fly FS
Dominican Republic

Gender:
Posts: 1

SubZer0 wrote on May 8^th, 2009 at 11:01pm:

Oh boy... It just did it again about 5 minutes ago.. even with the vcore raised quite a bit. So now I'm thinking it's the video card maybe. The frame on the screen will just be frozen, but the sound will keep on playing. However, I can't do anything on the screen at all but move the mouse cursor around.

I think I'm going to have to reinstall. Backing up now Undecided

I am having this exact same problem, FSX freezes after 10-15 minutes, but the sound in the background keeps playing (engines running, ATC talking), and when I go to task manager I observe that FSX.exe when down from 1 gig of memory used to just 76 MB and won't move not 1 MB more or less, if I click the X button in the upper right corner (I play windowed) the box asking me if Im sure to close FSX appears, but then no graphics whatsoever.

My system is E4500@2.8, 2G RAM, 8800 GT. I thought it was graphics driver related but I rolled back from 185 to 182 and I still keep getting the same freeze. Before I did full format of my system FSX was running well (damn virus, uninstalled antivirus to gain more HDD performance).

If somebody has an idea about this problem I would be extremely grateful as I'm having FSX withdrawals right now LOL.

Note: I set up my system using NickN guide.

Back to top

IP Logged

	Search the archive: