Hi,

I'm planning a major upgrade of my PC in preparation to FSX switch and GPU is one of the components that will be replaced. I'm currently have i7-950 and GT460 and I'm still using heavy-customized FS2004. The new machine will be build for FSX only.

The only concern I have right now is GTX580 that has videoRAM ~ 1.5GB. As we all know FSX SP2 is still 32bit application and it cannot access more than 4GB of virtual memory. As far as learned from many topics here on AVSIM, videoRAM is always a part of this equation for VM calculation. Simply speaking, more video RAM = more risks of OOM in the areas of complex scenery, lots of AI and multy-layer clouds.

Perhaps 560 and 570 (both have 1GB and 1.2GB respectively) would be more safe choice in this situation. I know that GTX580 is very good on hi-res textures, but my personal preference is the reliability and stability over the top-notch eye-candy quality. I'm fine with DTX5 textures anyway.

Your thoughts are much appreciated. Who know, may be OOM issue with the connection to GTX580 RAM is bit overestimated.

Thank you

Dmitriy