i have been looking to improve my performance in fsx. So bufferpools = 0 kept coming up. So I run msi afterburner and fsx is using all of my Gtx 460's 1 gb of video memory. I thought that's what the bufferpool tweak does?

 

I also have the pmdg 737. Orbx global. Asn. And was flying around the fsdt klax.

As far as I'm aware Bufferpools PoolSize=0 stops FSX from managing your video cards memory so resource allocation is dealt with at driver level. I believe that this can help smooth out stutters in FSX but has a downside in that it may cause texture corruption. It doesn't change the amount of graphics memory that FSX needs just the way it gets processed, so I'm not sure what you were expecting? I don't have the add-ons you list but I understand that they are fairly resource intensive so it wouldn't surprise me if they took you over 1GB.