Only if the applications displaying on each one run out of memory or CPU cores (multitasking) working at the same time.
I'm running FSX on a mobo w/only one pcie slot. I had upgraded from the hd 2400 agp to a hd 4890 and I'm happy, but....... now I have this xtra card that I can put to good use if it does'nt hurt. I would hate it if it slowed down my 4890! You still think it's ok?????