Guys, I am using the 480/257.21 combo and NickN's cheater nHancer work around. http://www.simforums.com/forums/forum_posts.asp?TID=34873.I have just spent two nights trying to break/crash FSX flying the pmdg 747x. I mean I am throwing everything at it. All sliders right, crazy crazy traffic levels, toggling to full windowed mode and back countless times, cycling thru UT2 AI (press "A") planes in the air/ground/where ever. Pumping up TEXTURE_BANDWIDTH_MULT to 800 (don't know what I'm doing here BTW), TEXTURE_MAX_LOAD=4096. It will not die. Wait a minute, am I talking about FSX here - the one I was cursing before the 480 and the Hey-sus tweak? YES (I can get FSX to crash using the UT2 command to "clear approach". Might be limited to my setup (doubt it though). I can faithfully reproduce this crash).I did notice and commented a little while back that I had to reduce my overclock by approx ~0.1-.2ghz. I suspect (and don't really know) that the increased bandwith with the 480/257.21 caused the instability.With a large sigh of RELIEF, I have placed the "CONFIGURATION FROZEN" sticker on the box and promised "NO MORE TWEAKING" (for now - hehe)Ok, BOTTOM LINE (For now)1) the 480 absolutely rocks. FPS gains did not meet my expectations but it allows higher settings overall and is killer smooth2) the 257.21 drivers are rock freaking solid, smooth as silk, stable3) nHancer is not required (for now)4) NVidia/Hey-sus/NickN co-winners of FSX person of the year!!5) In the link above, NickN recommnends that LESS IS MORE in the fsx.cfg!!! I am enjoying TONS of success with only adding 2 (TWO) extra lines - HiMemFix=1 and RejectThreshold=98304. THAT IS IT. ONLY. SIMPLY. NO MORE NO LESS.Your Experience Might Vary

Scott,I am delighted that you are delighted! So am I.Stephen

ianbeggsI assume your not using nHancer.I tried these settings with the current driver 197.55 and the sim is just terrible. I am going to try the 2##.## series drivers now.What settings are you using in the nVidia Control Panel?Also do the settings save in the nVidia Control Panel?Whey I first tried the newer driver I could not get any settings to stick.

No Im not using nhancer because it does not work with the 257.21 drivers but I am using Nicks profile, Scott434 already posted the link, just follow the instructions and it will import all the settings into the nvidia control panel for you.