i recommended it because any games that would require an extremely fast GPU will be limited by a 700mhz processor...and anything requiring an extremely fast CPU, will, of course, be limited by your CPU, again.
so in either case, u're CPU limited...that is, the framerate of the game is limited by your CPU, not GPU. So your GPU will never reach full potential at any settings because it'll be bottlenecked by yoru CPU before it can...except maybe in extremely high resolutions (which agian would probably run rather slow w/ your CPU!!)
the 8500LE is a great card because it can be had for cheaper than the 8500 while providing the exact same feature set, and it won't be the limiting factor in your computer...going lower wouldn't be worth it, unless u're extremely cash constrained...the 8500LE can be had for peanuts for a high-end graphics card.
I've noticed the 8500 OEM can be had for pretty close to the LE as well, and in that case, I'd go regular 8500 since the core/mem is clocked higher (the actual mem modules are faster too), but it does lack the DVI-to-VGA adapter...u may or may not need that...if u don't, then no biggie anyway...besides, u could pick one up later down the road.