I'm starting to agree that it sounds like the memory runs out due to overly largeram video cards. Which may be aggravated by any extra loads such as morescenery, etc..I have not had any problems running this plane. But.. I'm not running a high endvideo card. In fact, so far I've been using the cheap onboard video card on myMB. "ATI HD4200.". I forgot how much video ram it has, but it ain't much comparedto any of the better cards.So lets list my girly man box..I'm running a AMD Phenom II quad core at 3.5 ghz.. 4 gigs of ram. Cheap on boardvideo. Only 32 bit XP for the OS.And I'm not having any problems as long as I don't try to run too dense ascenery. I have flown all over the country. Many trips.. Sometimes multi legtrips where I take off and land at 2-3 airports. I've flown long routes forhours on end. I flew to Honduras and landed at Toncontín airport.I flew from Houston to Anchorage Alaska.I fly this way.. I fly that way.. Over and over again, and no freezes or OOM's..I can use the HUD no problem.. Also no problems if I edit the FMC whileflying.The plane in itself is not broke. The problem almost surely must be a localissue, and I think in most cases it's simply from running out of memory.I can make it happen on mine if I want to.. All I have to do is set the sceneryto full max to the right settings, and after a while it runs out of memoryand the sim flat vanishes. As long as I don't overdo the scenery, it will runfor hours on end. If this were a code problem with the airplane, it wouldcrash no matter what I do.So.. I think the theory of large mapping video cards, and memory beingtapped out is as valid as any I've seen so far. My video is at the oppositeend of the spectrum, and I'm not having any problems.Heck.. if I were to upgrade my OS to Win 7 64 bit, I could probably runpretty dense scenery and not OOM if I kept the same low end video.I was going to upgrade to a better video card, but now I'm almost afraid to,without also going to a 64 bit OS. BTW, my usual "available memory" withmy setup is around 2.7-2.8 gigs. Not even close to the supposed 4 gigsI would get with Win 7 64 bit.Yes, I do shut down every unneeded process before I run the sim, inorder to have more available memory. This plane needs a lot ofmemory due to being so complex. And if it doesn't get it, kaboom.. :(If one runs a humongous video card, or even worse, two of them,that would sure explain where a lot of the memory is going. And it ain'tgoing to the 737 NGX.. :( Mark Keith

I agree with a lot of what you say Mark !

Some people are running well maintained and good specs computers and have these problems. I can understand the complex demands in meeting the various requirements for different rigs, but a lot of people are running freshly installed platforms. That should have shown up with the beta testers. Im not impatient, I will wait for pmdg to iron out the wrinkles, they usually do. I think a lot of people were overexited, because they were told that the 737ngx ran silky smooth with impressive frame rates. It will if you abandon your usual addons etc. They were not expecting that. I feel theres some small memory leak somewhere, as the flight tend to get more laboured and laggy with time, and landing seems slightly juddery. Then often a freeze or ctd. It will get sorted guys, pmdg dont usually let us suffer too long. lol lloyd jones

Low end card... hm...I sure will not scrap my brand new water cooled eVGA GTX580 just for the sake of running NGX with all my scenery as a slide show @5FPS. I would rather see the issue properly addressed from the developers. Thank you very much.

So is the ultimate FSX rig going to end up being a high end rig with a low end GPU?

So is the ultimate FSX rig going to end up being a high end rig with a low end GPU?

I guess it all depends if one have a high end Case, then all should be fine. It´s the Case, which will make FSX run smooth. No..Joking. I don´t belive this thing about a low end GPU at all. / Leffe

I think the Dev Team is correct. It can't be coding if the majority of the people that bought the plane are experiencing no freezes while a small percentage are. Lets say 5 percent just for the hell of it. Heres is a link to my flights on Vataware. http://www.vataware.com/pilot.cfm?cid=842599 I do have a minor freeze for 2 seconds that happens a few times during a flight but it never crashes, and resumes after 2 seconds. Since this only happens about 6 or 7 times in a 7 hour flight, maybe once per hour, I can live with it. Granted I am not using a top of the line system either. Windows 64-bit, Q6600 2.4 ghz stock / oveclocked to 315 ghz, 8 gig ram, 8800GTX card with 768 meg GDDR3. I have a suspicion that the video card is getting overwhelmed and hence the freezes. Will find out soon enough cause I am planning on a Video Card upgrade very soon. The point here is if somebody like me can run the NGX on a modest system like mine, with a mix of high to ultra high settings and some people can't fly on an overclocked rig at 4.6 ghz there has to be something else causing the problem and not coding. To the guy with the GTX580 with 3 gig of memory I hope your using 64-bit and not 32-bit. Cause like in the example if you have 4 gig of system memory and on 32-bit with a 3 gb GTX580 you only have 1 gig of system memory left which would put you below the minimum spec for Vista, FSX and the NGX. Using Logic here, it would be reasonable to assume that the reason why only a small percentage of people are having issues is due to either to hardware configuration, Series of the Video Drivers, or possibly Software configuration issue or conflict. If it was NGX Coding then the other 95 percent would be having the same problems as you but they are not. Maybe it would be helpful to do a Poll which I will do right after I finish this. Have all the people that are having the freeze issue post system hardware, version of windows, video drivers, 32-bit or 64-bit etc. If they can find similarities then they might be able to track the issue down more easily.

I don't see how they can address it without trimming down the simulation.There is no magical way to make programs run on vapor memory.Either you have enough available memory, or you don't.I noticed on one of Nicks videos, he crashed when using FRAPS torecord a video. But I bet he doesn't crash when he's just flying it.And he's running a pretty decent video card.But that he crashed when using FRAPS tells me his available memoryrunnoft. Which tells me, he is right on the edge when making videoswith FRAPS. And he's running 64 bit. So it's quite possible to use ahigher end video card and not crash. As long as you don't get toocarried away with the extras, or when recording, etc. Mark Keith

To the guy with the GTX580 with 3 gig of memory I hope your using 64-bit and not 32-bit. Cause like in the example if you have 4 gig of system memory and on 32-bit with a 3 gb GTX580 you only have 1 gig of system memory left which would put you below the minimum spec for Vista, FSX and the NGX.

I'm no expert but i believe having a 64bit system makes no difference at all under these circumstances. As far as i have read, FSX is a 32bit APP and you are stuck with the 4GIG limit no matter what O/S you are running. Correct me if i'm wrong.Regards,

>I have a suspicion that the video card is getting overwhelmed and hence the freezes. Will find out soon enough cause I am planning on a Video Card >upgrade very soon. I kind of doubt it. But almost tapping out on the memory can cause that. Or maybe ashort term heavy load of some kind.And some of the problems like skeleton airplane visuals, etc.. Classic sign of tappingout the memory, which in turn crimps video style, being as it's mapping off thesystem ram, as I understand it.I don't get that, and look at my cheap card. The only thing I see on mine, is a slightdelay on loading the tail texture.. IE: it will load the front and middle textures almostinstantly, but it takes another second or so to load the tail texture if I haven't beenin that view for a while. Which to me seems like it's just taking a bit to load the textureoff the HD. It would probably be faster if I were using a SSD.. The only time I see vanishing textures with FSX is when I'm tapping out the memory.And I've done that even before the 737 NGX, when running real dense scenery. Mark Keith

I'm no expert but i believe having a 64bit system makes no difference at all under these circumstances. As far as i have read, FSX is a 32bit APP and you are stuck with the 4GIG limit no matter what O/S you are running. Correct me if i'm wrong.Regards,

That is correct !!Actually FSX can only use 3.8 gigs of ram so the more the card uses the less there is for FSX.A 1 or 1.5 gig card is more than enough for FSX with 4 gigs of ram.

Ryan, Yes, I can confirm that I did this flight three times and in two of those cases I got the OOM error - no freeze. The first time it happened being on short final, the second time while taxiing after arrival and the third time all worked fine. I used the same start situation and the same a/c. My panel freeze happened between EDDT and EHAM after starting to decent. Here again, I used the same procedures as before. PMDG got the saved situation files that had been automatically stored in the background by FSUIPC. You got a ticket describing as good as possible what was going on. Again, I wrote it somewhere above, I did not experience any problem since I reduced slightly my AI settings by turning back to about 20% ground and water traffic, airport services and as well GA even if the memory use rose up to 2.8GB from time to time. Regards,Axel

Ryan, Just to continue to answer your question: I just did the tutorial flight again without any problems (now the count is 2:2 with positive tendency). I'm using UT2 while having FsGenesis and Ultimate Terrain X Europe installed and my traffic settings are like in the included picture. Regards,Axel

just dont get it ? Has nouthing to do with the computer specs!

What a well thought out post from someone who posts links to other forums that you have not read.. Please don't say anything unless it adds value to the discussion.

Ryan, Just to continue to answer your question: I just did the tutorial flight again without any problems (now the count is 2:2 with positive tendency). I'm using UT2 while having FsGenesis and Ultimate Terrain X Europe installed and my traffic settings are like in the included picture. Regards,Axel

When you say UT2 are you refering to Ultimate Traffic?

Well I thought just for the record I'd add my name to the list of those who experience freezes. I've done about ten NGX flights and a freeze has occurred on four of them, all at or momentarily before touch down. Like others I have not (yet) submitted a ticket. My system is Core2Quad Q9650 at stock speed of 3.00GHz, 4GB DDR2 RAM and Geforce 9600GT with 512MB. A couple of things have occurred to me. First I have the Bojote tweaked cfg and I also use the Antilag d3d9.dll external limiter with FSX at unlimited. I wonder if either of these is a factor? As to Ryan's point, I only flew the tutorial once, following the instructions exactly without a freeze. I will fly it again and see what happens. I will also re-fly one of the four that gave a freeze and see if it is repeatable. Iain Smith