Can I run w/ a 32 Bit System?

[borgfan 1]

When I first installed PMDG 737 on my Q6600, 4Gb, WinXP/32 system, I was plagued with OOM erors and instability, irrespective of how it was tweaked, and I tried numerous tweaks... Installed Win7/64 on the same system, reinstalled FSX with the same add-ons and have not had a problem since. In my view a 32bit system is marginal, you may be fortunate and have adaquate performance or like myself find no-end of problems. If in doubt do an upgrade to Win7/64 and you have the best chance of success.

[Rocky_53 1,579]

Like others above, I initially ran FSX with Win XP 32bit and had continual OOM errors. Since moving to Win7 64 bit I have not had any!

[WotanUK 289]

I still get OOM's on Win7 64, FSX cannot use the additional memory i have, it can use about 3.2GB then anything more will cause a OOM.