Hi Peter.

64 bits is the way of the future. I have Windows 7 Professional 64bit with 8GB of RAM and I'm planning on getting another 8GB of RAM in the not too distant future. A 32bit system has a maximum capability of using 4GB of RAM and no more. I have no problems at all running FSX on my computer.

I say go with a 64bit OS because it has plenty of room for expansion. 2³²=4GB, 2⁶⁴=17.2billion GB! That number makes my mind boggle!

I have never suffered an "Out Of Memory" issue. Not even before I moved to a 64bit system. Something else might be causing that problem. Try turning some of the sliders down a bit (until it stops happening).

Mark

NOTE: Windows 7 Profession, Enterprise and Ultimate 64bit is limited to 192GB of RAM.
Windows Home Premium 64bit is limited to 16Gb of RAM.
Just some food for thought. More info here: http://msdn.microsoft.com/en-us/library/aa366778%28VS.85%29.aspx

I have been running 64 bit OS`s for few years now.
In early days of win xp 64 bit there were driver issues, but this problems are long gone now, providing that your hardware supports 64 bit OS as mentioned above.

My FSX is fairly loaded with addons, loads of aircraft and scenery and is running just fine, but i did have same memory error with 707 once followed by FSX crash.

In my case i am 100% sure that it is not hardware related as i had mem test running for hours with no errors reported. On a general note i do believe that 707 needs few tweaks as it does run slightly more sluggish than rest of my more demanding add-ons that i am not allowed to mention as it seems forbidden by CS, just checked in the forum rules as competitor name got changed to other.

Strange that as i do not see why CS has to be paranoid about mentioning competitors as CS is one of top software studios.
CS, you have nothing to worry about as long as you keep up same level of quality as you have just now

its not only 707 or 727 that will take resources, FSX is resource hog itself, it does like ram, but it does like fast, really fast multi core CPU. you really need to get good balance between both. There are shortfalls with lots of ram, you need to relax your clocks and latencies, and then you have old dual channel and newer three channel Intel memory configurations. i would say that for standard dual channel setup you should be good with 4gb, and three channel 6gb as optimum.

More ram will limit you CPU OC capabilities, so as i say, key is in balance, and of course good graphics card, FSX prefers Nvidia, i personally run ATI (5870)  new 5xxx series have improved FSX performance drastically, but nvidia still has an edge

OK, I consider switching over to 64bit. I let my retailer do the job, because the guy knows what he's doing.
Thanks for all the info
Happy landings

Peter

Well, for the moment I'm back to FS9/legendary 707
Thanks for the offer anyway

Peter

Well, thanks for the hint, but I'm not sure if this will work with Win7 as well. In the meantime I uninstalled my FSX and all FSX related addons (which weren't that much, thankfully) cleaned the system and the registry. After installing FSX and the 707 again the problem did not occur any more. (I made one flight so far, but will give it another try tonight)

Regards

Peter