You can't upgrade the CPU.<p>> An extra $150 gets you a 2.9 GHz dual core Intel i7 processor, which puts it on par with many of Apple’s newer (and more expensive) laptops.<p>The integrated GPU has improved dramatically, power consumption has improved, performance has improved in the latest generation i7s. A little disingenuous to say performance is on par.<p>The i7 they're referring to:<p><a href="http://ark.intel.com/products/64893/Intel-Core-i7-3520M-Processor-4M-Cache-up-to-3_60-GHz" rel="nofollow">http://ark.intel.com/products/64893/Intel-Core-i7-3520M-Proc...</a><p>This is the expected CPU in this year's rumored MBP (point remains for the current generation MBs):<p><a href="http://ark.intel.com/products/91167/Intel-Core-i7-6567U-Processor-4M-Cache-up-to-3_60-GHz" rel="nofollow">http://ark.intel.com/products/91167/Intel-Core-i7-6567U-Proc...</a>