What are the differences between the White "Mid-2009" MacBook Core 2 Duo and the White "Early 2009" MacBook that it replaced?

Externally, the quietly released "Mid-2009" and "Early 2009" MacBook models -- the MacBook "Core 2 Duo" 2.13 13-Inch (White - Mid-2009) and MacBook "Core 2 Duo" 2.0 13-Inch (White - Early 2009), respectively -- essentially are identical.

Photo Credit: Apple, Inc.

The "Mid-2009" MacBook Core 2 Duo uses the exact same relatively compact and easy to upgrade white polycarbonate case as previous MacBook models, and has the same 13.3-inch "glossy" widescreen display with a 1280x800 native resolution, "flush against the bed" keyboard design, and "catchless" magnetic latch. All of the "White and Black" MacBook systems share the same "scrolling Trackpad" with "two-finger click" capability, integrated iSight video camera, and "MagSafe" power connector.

Connectivity is identical -- AirPort Extreme (802.11a/b/g/n), Bluetooth 2.1+EDR, Gigabit Ethernet, two USB 2.0 ports, a FireWire "400" port, mini-DVI out (supports an external display up to 1920x1200 pixels), and optical digital audio in/out.

Internally, the "Mid-2009" models have modest improvements -- a faster processor, faster RAM, and a larger hard drive. The "Mid-2009" model has a 2.13 GHz Core 2 Duo (P7450) processor (up from a 2.0 GHz Core 2 Duo, P7350), 2 GB of 800 MHz PC2-6400 DDR2 SDRAM (up from 2 GB of 667 MHz PC2-5300 DDR2 SDRAM), and a 160 GB hard drive (up from a 120 GB hard drive).

Apple also officially claims that battery life for the "Mid-2009" MacBook has increased to 5 hours, up from 4.5 hours for the "Early 2009" model.

These differences are summarized below:

MacBook:	"Early 2009" 2.0 13"	"Mid-2009" 2.13 13"
Processor:	2.0 GHz "Core 2 Duo" (P7350)	2.13 GHz "Core 2 Duo" (P7450)
System Bus:	1066 MHz	1066 MHz
Level 2 Cache:	3 MB	3 MB
Standard RAM:	2 GB	2 GB
RAM Type:	667 MHz PC2-5300 DDR2	800 MHz PC2-6400 DDR2
Int. Graphics:	NVIDIA GeForce 9400M	NVIDIA GeForce 9400M
Shared VRAM:	256 MB*	256 MB*
Hard Drive:	120 GB	160 GB
Optical Drive:	8X DL "SuperDrive"	8X DL "SuperDrive"
Battery Life:	4.5 Hours†	5 Hours†
Apple Part No:	MB881LL/A	MC240LL/A
Original Price:	US$999	US$999

* Both models "borrow" memory from the system for video functionality. Minimum graphics usage is 256 MB.

† Battery life as officially reported by Apple using a "wireless productivity" test.

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