Macbook Air evolution

Table of model
Model	Early 2008	Late 2008	Mid 2009	Late 2010	Mid 2011	Mid 2012	Mid 2013	Early 2014	Early 2015
Model identifier	MacBookAir1,1	MacBookAir2,1		MacBookAir3,1 (11"), MacBookAir3,2 (13")	MacBookAir4,1 (11"), MacBookAir4,2 (13")	MacBookAir5,1 (11"), MacBookAir5,2 (13")	MacBookAir6,1 (11"), MacBookAir6,2 (13")		MacBookAir7,1 (11"), MacBookAir7,2 (13")
Model number (on underside)	A1237	A1304		A1370 (11"), A1369 (13")		A1465 (11"), A1466 (13")
Part number (Order number)	MB003LL/A	MB543LL/A, MB940LL/A	MC233LL/A, MC234LL/A	MC504LL/A, MC505LL/A, MC506LL/A, MC503LL/A	MC968LL/A, MC969LL/A, MC965LL/A, MC966LL/A	MD223LL/A, MD224LL/A, MD231LL/A, MD232LL/A	MD711LL/A, MD712LL/A, MD760LL/A, MD761LL/A	MD711LL/B, MD712LL/B, MD760LL/B, MD761LL/B	MJVM2LL/A, MJVP2LL/A, MJVE2LL/A, MJVG2LL/A
Display (glossy)	N/A			11.6", Supported up to 1366 × 768 (16:9)
	13.3", Supported up to 1280 × 800 (16:10)			13.3", Supported up to 1440 × 900 (16:10)
Graphics (shared with system memory)	Intel GMA X3100 using 144 MB ofDDR2 SDRAM with Micro-DVI output	Nvidia GeForce 9400M using 256 MB of DDR3 SDRAM with Mini DisplayPort output		Nvidia GeForce 320M using 256 MB of DDR3 SDRAM with Mini DisplayPort output	Intel HD Graphics 3000processor using 256 MB (11" base model) or 384 MB (all other models) of DDR3 SDRAM	Intel HD Graphics 4000processor with up to 1 GB DDR3 SDRAM SHARED from main memory	Intel HD Graphics 5000 processor with up to 1 GB LPDDR3 SDRAM SHARED from main memory		Intel HD Graphics 6000processor with up to 1 GB LPDDR3 SDRAM SHARED from main memory
Front side bus/DMI	800 MHz	1066 MHz		800 MHz (11"), 1066 MHz (13")	Intel Direct Media Interface 2.5 GT/s	Intel Direct Media Interface 5.0 GT/s
Processor	1.6 GHz (L7500) or 1.8 GHz (L7700) IntelCore 2 Duo with 4 MB on-chip L2 cache	1.6 GHz (SL9300) or 1.86 GHz (SL9400) Intel Core 2 Duo with 6 MB on-chip L2 cache	1.86 GHz (SL9400) or 2.13 GHz (SL9600) Intel Core 2 Duo with 6 MB on-chip L2 cache	(11") 1.4 GHz (SU9400) Intel Core 2 Duo with 3 MB on-chip L2 cache Optional 1.6 GHz (SU9600) Intel Core 2 Duo with 3 MB on-chip L2 cache (13")1.86 GHz (SL9400) Intel Core 2 Duo with 6 MB on-chip L2 cache Optional 2.13 GHz (SL9600) Intel Core 2 Duo with 6 MB on-chip L2 cache	(11") 1.6 GHz (i5-2467M) dual-core Intel Core i5 with 3 MB shared L3 cache (13") 1.7 GHz (i5-2557M) dual-core Intel Core i5 with 3 MB shared L3 cache (Higher-End 11" & 13") Optional 1.8 GHz (i7-2677M) dual-core Intel Core i7 with 4 MB SHARED L3 cache	(11") 1.7 GHz (i5-3317U) dual-core Intel Core i5 with 3 MB shared L3 cache (13") 1.8 GHz (i5-3427U) dual-core Intel Core i5 with 3 MB shared L3 cache (Higher-End 11" & 13") Optional 2.0 GHz (i7-3667U) dual-core Intel Core i7 with 4 MB shared L3 cache	1.3 GHz (i5-4250U) dual-core Intel Core i5 with 3 MB shared L3 cache Optional 1.7 GHz (i7-4650U) dual-core Intel Core i7 with 4 MB SHARED L3 cache	1.4 GHz (i5-4260U) dual-core Intel Core i5 with 3 MB shared L3 cache Optional 1.7 GHz (i7-4650U) dual-core Intel Core i7 with 4 MB SHARED L3 cache	1.6 GHz (i5-5250U) dual-core Intel Core i5 with 3 MB shared L3 cache Optional 2.2 GHz (i7-5650U) dual-core Intel Core i7 with 4 MB SHARED L3 cache
Memory	2 GB of 667 MHz DDR2 SDRAM	2 GB of 1066 MHz DDR3 SDRAM		2 GB of 1066 MHz DDR3 SDRAM Optional 4 GB	2 GB (11" base model; Optional 4 GB) or 4 GB of 1333 MHz DDR3 SDRAM (all other models)	4 GB of 1600 MHz DDR3LSDRAMOptional 8 GB	4 GB of 1600 MHz LPDDR3 SDRAM Optional 8 GB
Secondary storage[clarification needed]	80 GB 4200-rpm 1.8-inch PATAHDD or 64 GBSSD	120 GB 4200-rpm 1.8-inch SATAHDD or 128 GB SSD		64 (MC505LL/A)or 128 GB(MC506LL/A) (11"), 128(MC503LL/A) or 256 GB(MC504LL/A) (13") SSD	64 GB (11") SSD 128 GB (11") SSD Optional 256 GB upgrade128 or 256 GB(13") SSD	64 GB or 128 GB SSD (11")Optional 256 GB or 512 GB upgrade 128 or 256 GB SSD (13")Optional 512 GB upgrade	128 GB or 256 GB PCIe-based SSD Optional 512 GB upgrade
Video camera	iSight (640 × 480)					FaceTime HD (720p)
Connectivity	Internal 802.11 a/b/g and draft-n Bluetooth 2.1 + EDR Built-in infrared (IR) receiver for Apple Remote Optional Apple USB Ethernet Adapter (Year 2008)			Internal 802.11 a/b/g/n (AirPort) Bluetooth 2.1 + EDR Optional Apple USB Ethernet 100 Mbit Adapter	Internal Dual-Band 802.11 a/b/g/n (AirPort, Broadcom BCM43224 300 Mbit/s) Bluetooth 4.0 Optional Apple USB Ethernet 100Mbit Adapter Optional Apple Thunderbolt to Gigabit Ethernet Adapter Optional Apple Thunderbolt to FireWire 800 Adapter		Internal 802.11ac a/b/g/n compatible (AirPort, Broadcom BCM4360-based 867Mbit/s) Bluetooth 4.0 Optional Apple USB Ethernet 100Mbit Adapter Optional Apple Thunderbolt to Gigabit Ethernet Adapter Optional Apple Thunderbolt to FireWire 800 Adapter
Latest Supported Operating System	OS X 10.7"Lion"	OS X 10.10 "Yosemite"
Battery (non-removable lithium-ion polymer)	N/A			35-watt-hour (11")			38-watt-hour (11")
	37-watt-hour (13")		40-watt-hour(13")	50-watt-hour (13")			54-watt-hour (13")
Battery cycle count	300	300	500	1000
Unit weight	N/A			2.38 lb (1.08 kg) (11") 2.96 lb (1.34 kg) (13")
	3.0 lb (1.36 kg)
Dimensions	N/A			11.8 in (30 cm) wide × 7.56 in (19 cm) deep × 0.11 in (0 cm) to 0.68 in (2 cm) high (11")
	12.8 in (33 cm) wide × 8.94 in (23 cm) deep × 0.16 in (0 cm) to 0.76 in (2 cm) high (13"			12.8 in (33 cm) wide × 8.94 in (23 cm) deep × 0.11 in (0 cm) to 0.68 in (2 cm) high (13")
Peripheral connections by http://en.wikipedia.org/wiki/MacBook_Air	1× USB 2.0 1× 3.5 mm headphone jack Micro-DVI video port DVI-D/VGA adapter included	1× USB 2.0 1× 3.5 mm headphone jack Mini DisplayPort video port		2× USB 2.0 1× 3.5 mm headphone jack 1× Mini DisplayPort 1× SD card slot(13" only)	2× USB 2.0 1× 3.5 mm headphone jack 1× Thunderbolt port 1× SD card slot(13" only)	2× USB 3.0 1× 3.5 mm headphone jack 1× Thunderbolt port 1× SD card slot (13" only)			2× USB 3.0 1× 3.5 mm headphone jack 1× Thunderbolt 2 port 1× SD card slot(13" only)