The iMac "Core 2 Duo" 24-Inch Aluminum features a Intel "Core 2 Duo" processor (E8235), with two independent processor "cores" on a single silicon chip, a 6 MB shared level 2 cache, a 1066 MHz system bus, 2 GB of RAM (800 MHz DDR2 SDRAM, PC2-6400), a 320 GB (7200 RPM) Serial ATA hard drive, a vertically-mounted slot-loading DVD±R DL "SuperDrive", ATI Radeon HD 2600 PRO graphics acceleration with 256 MB of GDDR3 memory, a built-in iSight video camera, and built-in stereo speakers underneath the 24" glossy TFT Active Matrix LCD (1920x1200 native) display.
Connectivity includes three USB 2.0 ports, a Firewire "400" port and a Firewire "800" port, built-in AirPort Extreme, and Gigabit Ethernet, as well as mini-DVI, which supports an external display in "extended desktop" mode.
Externally, the iMac "Core 2 Duo" Aluminum models essentially are the same as the original Aluminum models that these replaced, with the same housing and glass cover that "joins precisely to the aluminum enclosure creating a virtually seamless front surface".
The iMac "Core i5" 27-Inch Aluminum is powered by aQuad Core Intel "Core i5" I5-2500S (Sandy Bridge) processor with a dedicated 256k level 2 cache for each core and a 6 MB shared level 3 cache. In lieu of a system bus, it has a "Direct Media Interface" (DMI) that "connects between the processor and chipset" at 5 GT/s.
By default, it is configured with 4 GB of RAM (1333 MHz PC3-10600 DDR3 SDRAM), a 1 TB (7200 RPM) hard drive, a vertically-mounted slot-loading DVD±R DL "SuperDrive", and AMD Radeon HD 6770M graphics with 512 MB of dedicated GDDR5 memory.
It also has a built-in "FaceTime HD" video camera and built-in stereo speakers underneath the 27" glossy 16:9 LED-backlit TFT Active Matrix LCD (2560x1440 native) display "with IPS technology".
Connectivity includes four USB 2.0 ports, a Firewire "800" port, built-in AirPort Extreme, Gigabit Ethernet, and an SDXC card slot as well as dual "Thunderbolt" ports that are backwards compatible with Mini DisplayPort and, likewise, each support an external display up to 30" (2560x1600). Thunderbolt also supports other peripherals that use the Thunderbolt standard which provides up to 10 Gbps of bandwidth in both directions.
The Apple MacBook Air "Core 2 Duo" 13" is powered by a Intel "Core 2 Duo" processor (SL9400) with two independent processor "cores" on a single chip with a 6 MB on-chip shared level 2 cache running on a 1066 MHz frontside bus.
It features 2 GB of onboard 1066 MHz DDR3 SDRAM, 80 GB or 120 GB of hard drive storage, a NVIDIA GeForce 320M "graphics processor with 256 MB of DDR3 SDRAM shared with main memory", an integrated "FaceTime" video camera, a non-backlit full-size keyboard and a 13.3" widescreen TFT LED backlit active-matrix "glossy" display (1440x900 native resolution) in a razor thin (0.11-0.68 inch), 2.9 pound, aluminum case.
Connectivity includes AirPort Extreme (802.11a/b/g/n), Bluetooth 2.1+EDR, an SD card slot, dual USB 2.0 ports, analog audio out, and video out capabilities (Mini DisplayPort) that support an external 30" display.
The MacBook Pro "Core i5" 2.4 15-Inch is powered by a 32 nm, dual-core Intel "Core i5" I5-540M (Arrandale) processor, with dedicated 256k level 2 cache for each core and an 3 MB shared level 3 cache. This system also supports "Turbo Boost" -- which "automatically boosts the processor speed based on workload" up to 3.06 GHz for this model -- and "Hyper Threading" -- which allows the system to recognize four "virtual cores" or "threads."
By default, it is configured with 4 GB of 1066 MHz DDR3 SDRAM (PC3-8500) installed in pairs (two 2 GB modules), a Serial ATA (5400 RPM) hard drive, an 8X DL "SuperDrive", and dual graphics processors -- a NVIDIA GeForce GT 330M with 256 MB of dedicated GDDR3 memory and Intel HD Graphics with 256 MB of RAM shared with the system -- that Mac OS X automatically switches between for better graphics performance and better battery life, respectively, depending on application use.
The standard configuration of this model has an LED-backlit 15.4" widescreen TFT active-matrix "glossy" display (1440x900 native resolution).
Connectivity includes AirPort Extreme (802.11a/b/g/n), Bluetooth 2.1+EDR, Gigabit Ethernet, a Firewire "800" port, two USB 2.0 ports, optical digital/analog audio in/out, a "Mini DisplayPort" that supports an external display at 2560x1600 (it also passes an audio signal), and an SD card slot. It lacks an ExpressCard/34 slot.
This model uses a "Unibody" aluminum case design -- milled from a single piece of aluminum -- and has a backlit keyboard, a new "no button" glass "inertial" multi-touch trackpad, and a non-swappable battery design that provides up to 8-9 hours of battery life.