( CNN ) -- Apple has updated its entire iMac line of products with Intel 's latest quad-core processors , new graphics , next-gen Wi-Fi and faster PCIe flash storage . The 21.5-inch iMac now starts with a 2.7GHz , quad-core Intel Core i5 processor and new Iris Pro graphics . The 21.5-inch is also available with an i5 processor with up to 3.4GHz and Nvidia GeForce 700 series graphics . SEE ALSO : Apple iPhone 5S : A Great Phone Inches Toward Perfection . The 27-inch model comes with a 3.2GHz quad-core processor and Nvidia GeForce 700 graphics or a 3.4GHz CPU . Users can also purchase the 3.5GHz processor and Nvidia GeForce GTX 780M series graphics with up to 4GB of video memory . All iMacs now support the 802.11ac Wi-Fi standard and start with 8GB of memory and a 1TB hard drive . They can be upgraded to up to 32GB of memory and a hard drive with up to 3TB of storage . The cheapest 21.5-inch iMac costs $ 1,299 , while the model with a 2.9GHz processor and Nvidia GeForce GT 750M graphics will set you back $ 1,499 . The 27-inch iMac with a 3.2 GHz quad-core Intel Core i5 CPU and an Nvidia GeForce GTX 755M graphics card goes for $ 1,799 ; the version with a 3.4 GHz CPU costs $ 1,999 . © 2013 MASHABLE.com . All rights reserved .
Apple announced improvements to its iMac line of desktop computers . New machines have better sound , new graphics , next - gen Li - Fi and faster internal ##s . New models are available immediately .