Well everything over 2gb can give OOM in 32 bit apps so switching between FSX and P3Dv2... That will change with native 64 bit...

First of all, VRAM has nothing to do with OOM's. Period.

 

Second, the limit for a 64 bit OS is 4GB VAS (not RAM). There is a very huge difference both conceptually and actually. Those with 32 bit OS are limited to 2GB VAS max per application.

 

Here's a very simple analogy. A certain small town in Arkansas has 6,402 telephone subscribers. However, the phone book only has room for 4,000 listings. Just because some individuals' numbers (addresses) won't fit in the phone book doesn't mean they don't exist...

 

Virtual Address Space (VAS) is the equivalent of the phone book. It only can hold so many addresses. Further limiting VAS is that with either FS or P3D, there must be at least 1MB contiguous blocks of VAS available at all times to avoid an OOM error.

First of all, VRAM has nothing to do with OOM's. Period.

 

Second, the limit for a 64 bit OS is 4GB VAS (not RAM). There is a very huge difference both conceptually and actually. Those with 32 bit OS are limited to 2GB VAS max per application.

 

Here's a very simple analogy. A certain small town in Arkansas has 6,402 telephone subscribers. However, the phone book only has room for 4,000 listings. Just because some individuals' numbers (addresses) won't fit in the phone book doesn't mean they don't exist...

 

Virtual Address Space (VAS) is the equivalent of the phone book. It only can hold so many addresses. Further limiting VAS is that with either FS or P3D, there must be at least 1MB contiguous blocks of VAS available at all times to avoid an OOM error.

 

It does because it changes the memory management period in FSX DX9 (so if you want to switch back to FSX and P3Dv2 it does matter) lol

VRAM to use in dx9 and FSX it has to be copied into the application VAS.

 

While in general an oom has nothing to with VRAM or memory but all with address space saturation (VAS)...

Just to get back to the wow moments... Ages ago before FSX came out I remember flying into JFK. My nose was stuck to the window, it is one of those gob smacking for real experiences, that never leaves you.

 

Of course, trying to bring back some memories of that moment in FSX just never really worked.

 

After spending a week fiddling and tuning, I decided this evening, I would do a long circuit round the city by taking off and landing back at KJFK. I set the time so it was a few minutes before dusk sat back and opened the throttle.

 

Would my system now properly cope with what are insane settings for this scenery on my system? Scenery complexity at max, both autogen sliders one notch below max. 40% cars and 40% AI using WOAI. After taking off and getting to 2000ft I levelled off and yea, I had to lower AI to 20% at that point, which gave me a fluctuating but very smooth flight, never going much above about 22fps. I could see the traffic, headlights were not on, it wasn't quite late enough. The view was amazing, but I knew that already. I'd used New York quite a bit for tuning. Soon, the car headlights were on and I simply sat back and enjoyed the flight. In total I flew for about an hour. Switched off, sighed and went to make a coffee.

 

Now, several hours after that flight I can't get it out of my head!