My system is as follows:Intel P4 3.2 Ghz CPUATI Radeon X800 XT Platinum Graphics Card1.5GB DDR RAM (possibly only running at single speed due to the set up of the sticks on the motherboard).I use add-on scenery as much as possible, yet with the above set up I do not get fps above 15 when around the airport. I know this is quite a good frame rate, but I would like to get it a bit faster just to make landing really smooth, as it is at the default FS airports.My question is regarding the RAM. I processor and graphics card are already quite good, but will increasing the RAM, and getting it to run at dual speed, allow me to enjoy fps of 20 in the PMDG 737 at add-on airports?Thanks for any help.-Phil

Not with this plane and those settings it won't. I have about the same system and thats about what I get as well.

Strange,I've got a crappy 9700 Pro in my Laptop and I am getting 18 fps at ISD's LIRF with max Autogen, water effects on, and scenery sliders to maxed out.If I get such high framerates you two would need to get at least twice as much.Robert Lechner