Hi Word Not Allowed,Well those temps appear to be pretty stable: under 100% Load the highest Coretemp recorded was 39C, as for the ambient temp Ive no means of measuring it....... theres NO heating on and its raining outside (British Summer-time) Anyhow have reinstalled ALL my FSX and 3rd party addons and to be completely honest, I'm very impressed with FSX performance (No stutters, CTD, No memory errors) so much so I'm cosidering NOT overclocking.Ive still got afew more FSX test I want to perform (just to push it to the limits) eg: 100% A1 traffic, Photographic Scenery, LevelD 767, Radar Contact, REX, TrackIR, landing at Heathrow during Dusk.and see how It performs, but upto now I'm a very Happy Chappy.Thanks for All your guidance.Cheers John

As Word Not Allowed said, 39C is great under load. Enjoy FSX on your new rig.