The iMac range received an update in September of 2013. The 21-inch model with a 2.7GHz quad-core Intel Core i5 processor uses Iris Pro graphics. The high-end 21.5-inch model and both 27-inch iMacs feature quad-core Intel Core i5 processors up to 3.4GHz, and Nvidia GeForce 700 series graphics with twice the video memory and up to 40 per cent faster performance than the previous generation. The new iMacs feature 802.11ac Wi-Fi, which is up to three times faster than 802.11n when connected to a compatible router or base station, such as Apple's AirPort Extreme. In June 2014, a new entry-level model was added, offering a 1.4GHz dual-core processor and a 500GB hard drive for £899.