The 8800gts is twice the card of the 1950pro.
You didn't list your processor though. Unless you have a fairly decent processor, anything over the 1950pro may be a waste. The flight simulator will also benefit from a very fast processor.
If you can afford it get the 8800GTS. I guess. I use the 1950PRO 512mb and play everything very well. I only play w/everything maxed out in my vid card drivers and in the games too. I feel that is the only acceptable way to play a $50 game. BUT I would go DX10 if you can. I guess. There's only one question... why choose between 2 hugely different cards. If it's $ then get the 1950PRO512mb. If it's cuz you have a slow CPU then get the 1950PRO512mb. If you plan to upgrade further in the future and need something to hold you over for now... 1950PRO512mb is pretty darn good but the 1950XT is much faster.
Flight Sim 10 is heavily CPU dependent. You can play it maxed w/the 1950PRO512mb though. IF you have a good CPU.
That's kinda funny that Corsair and Mushkin are making PSU's. I have a Mushkin 550w. VERY solid and oh so pretty. The mirror finish and green light is cool. Haven't looked into Corsair yet, but I assume that they would be very good PSU's.
I stand by what I wrote earlier though. The future is gonna require more power. By the future I mean if you want to get a PSU that will be upgrade friendly... ie: 2 vid cards, more ram, more hard drives etc. you will want to get 850w or better. You see if $ is a concern then that's one thing-end of story, but if you want good clean reliable power even @450w you'll need to spend a little more. The catch is that you could spend 80$ on 450w now, but if you spend 30-50$ more "now", you'll be happy in the future. It happened to me. I wanted good power NOW, but I wish I'd have spent a little more and bought the 700w or 850w. I can't upgrade to 2 vid cards or a better CPU with just 550w. I spent $110.00 on 550w which is more than enough for what I have. BUT like I said IF I wanted to upgrade what would I do with my $110.00 550w PSU??? I could have spent an extra $30 and got a GOOD 850w PSU. I wish I would have known that Tom's forums were so helpful. I want to help where I can now. I have been building gaming rigs for 8 years now and have a good bit of knowledge and have done research... daily since 2000. I love this stuff. I was programming in basic on a Commodore 16, then Commodore 64 back in the dark ages and I know what goes into the games of today IT'S SOOOOOOOO cool. BLAH BLAH BLAH... good luck with whatever you get.
yea g but im not looking into the furture i build a new one like each yea so im uptodat with stuff
So does that mean that you build a complete system from the ground up, every year? If that's the case than the 450w Corsair would work just fine for what you want. The Antec one I quoted would be better, but you would have to trust the MIR process to get the best deal.