IIRC Oleg several times compared BoB release with Il-2 release regarding system requirements. In 2001 no hardware could run Il-2 maxed at hi-res at 50+ fps.
I have an impression that we would not be able to run BoB at 100% maxed out settings (100% AI complexity, 100% ground units, etc.) at 50+ fps for 3-5 years after release on mid-range hardware ($800-1200 setups). My 2005 $1200 setup could not run 4 year old Il-2 maxed out at 50+ fps at 1680 res low above cities for example.
So wait if you can or be prepared to upgrade next summer or winter again
I upgraded for BoB last spring and ready for next upgrade when I feel I am not satisfied with BoB performance.
PS. 3.2 GHz clock speed may not be enough for BoB regardless of number of cores. Some games just require high clock speed (e.g. Arma2). Say ArmA 2 starts to kick only at 3.8 Ghz at my quad core i7 860 and not playable at 3.3 Ghz. And in some complex Warfare missions with many AI fps drops to 8-10 due to lack of processing power (not video). Video is not an issue in sims unless you run triple monitors I think.