Oh oh sorry, yes i was talking about the GTS 250. And you can also manage the GTX 460 with Nvidia inspector.I will say that usually the ATI HD give you a 20 % speed boost BUT you will loose in term of quality. andif you want to use best settings to neutralize the antlialiasing (and these fsx-genetic bugs) your fps wil drop back.Other argument, the ATI HD are more expensive than the Nvidias.* * * * *By the way, I also compared scores from my old GT 220 to the GTS 250 and the gain is marginal;...5 % top.So it is just about CPU CPU CPU CPU CPU CPU and its not a hasard if in America, a lot of people are now switching for an I5 or I7.In Europe, we are going to wait a while because of this stupid strong euro (the good I7 config are still at 800 euros (1100 bucks ?))To come back on the PMDG, i wonder (me too) what kind of surprised the 737 NGX is hiding in term... of FPS.....Masonhttp://airdailyx.blogspot.com/the insolent european FS blog !

For what it's worth I rarely see over 400W with my GTX570 (I have a Kill A Watt at the wall measuring the total draw of the tower). It goes up to around 430W or so in really intensive games like Metro 2033. FSX has never broken 400W for me though and that's with the CPU at 4.0GHz too.

Ups, sorry, forgot the link: http://www.antec.outervision.com/

Thanks for the link, but I think I´m too fool to calulate right. It gave me over 600W. Maybe some can look at this site and explain what I have to fill in, cause I want ot check whether I have to upgrade my PSU if I change to a GTX470.

how can you see , how many watt used your pc?

Just used this calculator with your OCed setup + 1 HDD + 1 CD/DVD + 6 usb + GTX 570 and got 473W 

can 550w power give 473 watt? efficiency 80% so about 440-450 watt

It doesn't work like that. The efficiency being worse means that it will draw more power from the outlet, not that the PSU will deliver less watts to the computer. It will just do it at a higher energy cost.It's true though that you don't really have 550W but the reason is that it's the 12V rail(s) what determine how much power your GPU will get. Your 2x12V 2x18A should deliver something like 432W. At a 80% efficiency, you would see your computer drawing 540W in the "Kill A Watt" (432W / 0.8 = 540W)

how can you see , how many watt used your pc?

Buy one of these:http://www.p3interna...0/P4400-CE.htmlCost me $20 at Fry's Electronics here.

i am confused a bit, so can i use gtx560?

Ups, sorry, forgot the link: http://www.antec.outervision.com/

That´s strange! I tried to fill it out again. I think this time I did it right. With my GTX 260 it gave me a watt usage of 401W, which seems pritty real, cause I have only a 420W PSU. Than I tested this setting with my favour new GTX 460 card. There I got a lower usage of 395W. Is this normal, I thought it will cost more watt.