Apple’s current Mac Pro is a major speed bump over the rev. before it. The current Mac Pro with it’s stand specs features two quad Core Core i7 Nehalem 5500 Xeon Processors, equaling eight Cores. Mac OS X has a hyper threading feature which turns the Core i7s’ eight Cores, into sixteen Cores. That’s real processing power.
Apple’s next rev. of it’s pro level Mac, the Mac Pro. Is rumored to have Intel’s 2010 roadmap ‘Gulftown’ Core i9 six core processor inside. Apple has always gotten processors from intel before the rest of the industry, somehow… I suppose their exclusive deal with Apple helps.
Don’t buy a new Mac Pro if you’re in the market for one. Wait for the new version.