by , 12:25 PM EDT, August 22nd, 2007

American Technology research analyst Shaw Wu has been watching Mac and iPhone sales, and the numbers he sees indicate that both products are selling very well. According to his estimates, Mac sales are on track to beat quarterly estimates, and the iPhone sales appear to be ahead of plan.

The strong Mac sales are being driven in part by back-to-school buyers, along with Windows users switching to the Mac. Mr. Wu commented "We believe our already bullish forecast looking for 1.95 million Macs [for the September quarter] is likely conservative."

Apple projected that it will sell 730,000 iPhones for the September quarter, but Mr. Wu thinks that is a conservative number. "Contrary to popular belief, iPhone sales are strong and appear ahead of plan," he said. "We remain comfortable with our forecast of 770,000 units, above Apple's goal/plan/guidance of 730,000."

Mr. Wu's comments echo what UBS analyst Ben Reitzes had to say earlier this week. He stated "Our findings indicate that iPhone demand is tracking to some modest upside to our [September quarter] shipment estimate of 800,000 units."

Mr. Wu is maintaining his "Buy" rating at US$185 target price for Apple's stock. Apple is currently trading at $131.468, up 3.898 (3.06%).