An Intel ad showing a refreshed Apple MacBook Pro complete with the powerful Intel Core i5 processor has been pulled.

The ad, part of the Intel Retail Edge Program promotional email, offered two Intel Core i5-based MacBook Pros as prizes to lucky winners in a product awareness contest. Intel swiftly junked the Apple prize, offering the HP Envy laptop as an alternative while keeping the Intel Core i5 processor logo.

"In our previous communications about the January prize draw, we got the processor right, but not the computer," Intel noted.

The current range of Apple MacBooks come with the lower spec Intel Core 2 Duo, but the competition prizes suggest Intel may have inadvertently leaked specs for a new family of MacBook Pro laptops, which according to rumours could be available as early as this month.

At CES, the world's largest consumer technology tradeshow last week, Intel officially released its next-generation chips. The new chips fall under the brands of Core i3 for low-end systems, Core i5 for midrange systems and Core i7 for the fastest systems.

The new processors include dual-core laptop chips under the three brands running between 1.06GHz and 2.66GHz, and desktop chips running between 2.93GHz and 3.46GHz.

The new chips are manufactured using the 32-nanometer process, which makes them smaller and more power-efficient than earlier chips. Based on the Westmere architecture, the transistors are a step away from chips manufactured using the 45-nanometer process.

According to Intel, the Intel Core i5 processor features: "4-way multi-task processing that allows each core of your processor to work on two tasks at the same time, delivering the performance you need for smart multitasking."