HiI am currently using 2 PCs each with 4gb ram, one runs XP 32bit and controls saitek radio stack, multi panel and switch panel via widefs, the other running windows 7 pro 32 bit controls fsx, flight yoke, pedals and throttles.My problem is FSX keeps stopping with an out of memory error, is there any way to know which services I can kill off and which I need to keep so I can release some more memory for FSX to use cus this is really becoming a pain in a$.I tried searching the forums but couldn't find any topics like this, so I started this one.Any help is appreciated.CheersMartin :blink:Sorry Guys, Just searched again leaving out words with less than 3 characters and found loads of topics, didn't realize the search worked like that.Thanks anyway.CheersMart.

Get 64bit OS and it should fix your problems.

MartinYour problem is a 32 bit OS and something called the Virtual Address Space which FSX loads into when you start it. In a 32-bit OS you only get 2GB of VAS which FSX and the video card can share and use. This can be changed (FSX SP2) up to approaching 3GB with the /3GB USERVA=xxxx switch set in the boot.ini file in XP(bcedit in Vista/ Win7) (Google that). I would switch to a 64 bit OS eg Win 7 and here you can use the full 4GB of VAS (FSX is a 32 bit program running in a 64 bit OS)and the OOMs whilst still possible are much more unlikley. This is entirely different to Physical RAM!There are plenty of posts here on AVSIM about OOM's or on the web.RegardsPeterH