the game is just NICE! It's like BUTTAH!
I don't think the requirements are super high. All the units are polygonal but i still don't think the game requires dual AMD 1900+'s.
Humans are same ol same ol. Their heroes are not bad. Mountain Kings rock! Super damn cool hella strong
Orcs are also pretty much the same. Orc Blademasters are really nice. They have this skill called Whirlwind where they're just a blue whir and they rape guys. Building and resources are the same with them
Undead are interesting. Their units are a tad weak i think. They build buildings like Protoss: they summon them and then the acolytes (undead workhorses) are free to do other things. Gold mines must be "haunted" before they can be mined. Acolytes just "pray" at the mines and ur gold count goes up. You need Creeps (soldier / workhorse) to gather wood. Acolytes can't collect wood.
I LOVE the Night Elves. The Night Elf Demon Hunter (hero) is the COOLEST THING EVER IN THIS GAME I LOVE WITH ALL MY BODY (even my pee pee). Most of their buildings are living trees which can actually get up, move around and attack enemies. The Night Elf Town Hall must be placed adjacent to a gold mine where the Town Hall grows roots around the mine, eliminating the need for workhorses to get gold. The Wisps (workhorses) are awesome. they can heal friendly units, and explode, dispelling all enemy buffs. Wisps also gather wood by swirling around them and "extracting" the wood, so no trees are cut down.
Your heroes are your bread and butter. They lead your teams in raids and stuff. Only heroes can level up and get skills from a skill tree a'la Diablo 2. when you defeat NPC's or enemy heroes you can get special items like Healing Potions and Diablo items like the Belt of the Giant +6 etc etc
The voices ROCK. LOTS of monty python references and pop-culture things. Check out the Undead Banshee. I find her one of the funniest, as well as the Orc Blademaster.
And no one EVER gets tired of the Scottish Dwarven Riflemen. "THIS... IS.... MAH BOOMSTICK!!"
All in all, GET THIS GAME WHEN IT COMES OUT