Reviews were generally positive. InfoWorld described the G5 as "Apple's best work yet", and said it "delivers on the present need for rapid computing, deep multitasking, and responsive user interfaces — as well as the future need for mainstream computers that rapidly process and analyze massive data sets." PC Magazine again awarded the Power Mac G5 with its Award for Technical Excellence for 2003. However, the G5's heavy weight (10 pounds more than the previous year's Quicksilver Power Mac G4), limited internal expansion options, issues with ground loop, and noise in the single-processor models' power supply units resulted in significant criticism of the product. Apple also continued to make unsubstantiated performance claims about the new Power Mac. This resulted in the Advertising Standards Authority for the United Kingdom banning Apple from using the phrase "the world's fastest, most powerful personal computer" to describe the Power Mac G5 after independent tests carried out by the Broadcast Advertising Clearance Centre determined the claim to be false. Another claim made by Steve Jobs at the 2003 Worldwide Developers Conference was that the company would be selling a 3 GHz G5 by mid-2004; this never happened.