. The 20 '' is powered by a 2.66 GHz processor ; the 24 '' has processor speed options of 2.66 GHz , 2.93 GHz -LRB- for $ 1,799 -RRB- , or 3.02 GHz -LRB- for $ 2,199 -RRB- . The 24 '' comes with a 640GB hard drive and 4GB of RAM expandable to 8GB ; the 20 '' comes with a 320GB hard drive and 2GB of RAM expandable to 8GB . `` Our flagship 24-inch iMac with twice the memory and twice the storage is now available for just $ 1,499 , '' Apple chief operating officer Tim Cook , currently standing in at the helm of the company in place of iconic CEO Steve Jobs , said in a release . `` The Mac mini is not only our most affordable Mac , it 's also the world 's most energy efficient desktop computer . '' As for the new Mac Mini , the big upgrade is NVIDIA GeForce 9400M integrated graphics that Apple says will improve its graphics performance as much as fivefold . The monitor-free machine costs either $ 599 for a lower-end edition -LRB- 1GB RAM , 120GB hard drive -RRB- or $
-LRB- CNET -RRB- -- Well , here 's what we 've all been waiting for . Apple put out a couple of announcements on Tuesday related to its desktop computers . Apple on Tuesday announced a new Mac Pro high-end desktop powered by Intel 's '' Nehalem '' processor . The company unveiled a new Mac Pro high-end desktop powered by Intel 's `` Nehalem '' processor , a new and more graphics-intensive Mac Mini machine , and updated iMacs that include the lowest price point yet for the consumer desktops . Let 's look at the new Mac Pro first : priced at $ 2,499 for the quad-core version and $ 3,299 for the eight-core version , those Intel `` Nehalem '' Xeon processors run at 2.93 GHz , and the interior of the machine has been cleaned up to make physical expansions easier . On the green front , it meets the new Energy Star 5.0 requirements that will go into effect later this year . The new iMac desktop is a 24 '' machine that is priced at $ 1,499 , the cost of Apple 's previous 20 '' iMac . The 20-inch is now $ 1,199