I am about to purchase a new computer. I want to be able to run fsx with active sky and possibly might try x plane. I have done research on the internet and looked at a number of forum postings here and elsewhere. From what I can gather fsx puts the heaviest demands on the cpu. The majority of processing occurs there and the video card is primarily for display. I am looking at 2 computers. One is an HP pavilion h8 1214 with an amd fx 6100 6 core chip with a clock speed of 3.3gh. Memory is 10 gb. The video card is Radeon 7450 which I believe is actually the 6450 rebranded for OEM's. The other system is an Asus Essentio cm6850-01 with an intel i7 2600 chip with 8 core processing and clock speed of 3.4 which can be overclocked to 3.8. Memory is 8 gb. The video card is Nvidia gt 520.
I am looking to run fsx at moderate settings and maintain a frame rate of 20 +. I think both computers would work. My main concern is whether the video cards are adequate. Both computers have a 300 watt power supply which is going to limit my choice of possible video card upgrades if I chose that route. If I upgrade the card are there cards that will do the job that can run on 300 watts ? To get a system with a larger power supply things get more expensive because those computers tend to be gaming oriented machines. However, I'll spend some more money if necessary.
I would appreciate comments from some of the more tech savy people here.