#MACBOOK PRO EARLY 2009 RAM UPGRADE PC#

As with AppleвЂ™s other unibody laptops, the battery is not user-replaceable, but Apple says that the battery gives you between three and a half and seven hours of juice and up to 1000 charge cycles before being reduced to 80 percent capacity. This surface is smoother and doesnвЂ™t provide as much friction as the pads on the older MacBooks did, and it collected a fair amount of dirt and debris from my desk (although a quick rub got it looking good as new).ДЄnother problem with the unibody design is that it requires that the battery be built in. Instead of nonskid pads in the corners on the bottom of the MacBook, the entire surface is one giant rubberized foot secured by eight Phillips screws. The keyboard also feels more solid and consistent. The result is a consistent white color, and a smoother surface without the sharp edges of the earlier generation. In switching to a unibody design, the new MacBook sheds the grayish surface that appeared grafted atop the frame in the previous model ( ). Making the MacBookвЂ™s main case out of a single piece of polycarbonate plastic (aluminum on all other Apple models) results in fewer parts, fewer screws, a lighter weight, and better durability. One of the big ones was unibody construction. As the least-expensive model, it was missing several of the new design features that had already been made standard across the rest of the laptop line. In many ways, the white MacBook was the lone holdout among Apple portables. In its first major remodeling since 2006, the polycarbonate MacBook has gained many of the marquee features of the 13-inch MacBook Pro ( ), including a unibody design, a glass trackpad, and an LED-backlit display.

#MACBOOK PRO EARLY 2009 RAM UPGRADE PC#

Your info, however, helps a lot towards my decision.In just three and a half years, the MacBook, targeted at average computer users, students, and PC switchers, has become AppleвЂ™s best-selling Mac model. I was worried that seller's laptop broke perhaps due to the RAMs being 12800s (without his knowledge) and subsequently was disposing of the memory modules relatively cheaper than market price, and that it could do some damage to mine but. THE ONLY THING THAT IS ABSOLUTELY A MUST IS THE VOLTAGE!!!! Most newer chips run on 1.2v All Macs 2010 and below run on 1.5v so you'd need to find 1.5v higher speed RAM.ДЄs I'm almost locking a deal on a pair of Hynix 4gb 2Rx8 PC3-12800s (<- image reference) for my trusted mid-2009 MBP 15' A1286, the pair taken by seller from his busted unit of the same specs.

'PC3-12800' is the name used in the memory industry - 12800 indicates a peak transfer rate of 12800 MB/s (of course, the actual performance in your case would be brought down to 8533 MB/s, matching PC3-8500).

'1600' is the data transfer rate per second specified in millions (the technical term is 'clock frequency') - '1600' here means it supports up to 1600 million transfers per second - in your case, it will be slowed down to 1066 million transfers per second since that's what your Mac is designed for.

'DDR3' is the type (and must be the same as what your computer has).

However, your system will operate at the speed of the slowest memory module.

Memory is designed to be backward-compatible, so generally speaking, you can safely add faster memory to a computer that was designed to run slower memory. This is from the crucial website which was posted here: mac-instead-of-1067mhz The only computer that is known to run a single 8gb RAM stick is the 2010 15' Macbook pro as stated here Yes your computer is capable of running 8gb of RAM but only in 2 4gb Chips. Sometimes the higher clocked RAM is more expensive but most times it's cheaper due to availability and that the actual cost to make that newer RAM has gone down in the last 3 years. THE ONLY THING THAT IS ABSOLUTELY A MUST IS THE VOLTAGE!!!! Most newer chips run on 1.2v All Macs 2010 and below run on 1.5v so you'd need to find 1.5v higher speed RAM.Д¬ompanies, EVEN CRUCIAL, will sell you higher 'clocked' RAM and it will be compatible with your computer. What WILL NOT work is putting a single 8gb RAM chip into one slot. Your Mid 2009 Macbook Pro can run PC3-8500, PC3-10600, PC3-12800 (1066mhz, 1333mhz, 1600mhz) literally anything above 8500 in the PC3 format will work.Higher speed RAM clocks down, or reduces speed to match your computer capability.

I don't really post that much as you can tell. Also Don't know why people are saying the ram you posted won't work, because it will.

Macbook pro early 2009 ram upgrade