Crucial 4GB Single DDR3 1333 MT/s (PC3-10600) CL9 204-Pin 1.35V/1.5V SODIMM Memory For Mac CT4G3S1339M

Installed a couple of these (4GBx2) on my Macbook Pro (Early 2011) and they work like a charm. OSX recognized the new configuration instantly. Apps such as Word, Adobe Photoshop and InDesign open much more faster than they used to on 4GB before. The overall performance of the laptop is much faster now. Overall a great buy for Mac users!

In case of memory upgrades its important to match the channel, clock latency CAS(9-9-9-24), voltage and frequency, data rate and speed. This way you can prevent the BSOD or system crashes and maintain longevity of the system. One should carefully go through the apple product webpage about recommended guidelines and choose upgrade accordingly. This is good for windows machines as well.Crucial is a very successful brand in USA and has reputation for memory solutions all over the world. Its availability in India with warranty service is a boon. Though for windows machines one can get many options, with apple products a careful selection is required.Its installation is fairly simple - going through apple as well iFixit web page gives accurate details and youtube videos are really helpful.I bought this because i have had good experience with crucial products earlier :- Crucial brand and warranty (3 years in India )- Branded for use with apple (hardware match) - no incompatibility issues- Good pricing - competitive- Amazon : easy and hassle free buy.

Works great in ma Dell Inspiron 14r

Cost is highworking well with my lappy inspiron n4010

A good upgrade for my mid 2011 21.5" iMac. The installation was straight forward and it took hardly 5 min. Now my Mac is working to my satisfaction.I am now using 12 GB (2+2 GB original and 4+4 GB this module) in my iMac. Hope I have solved my memory problem.

Yosemite upgrade brought my Mid-2011 iMac with 4GB RAM to its knees. If I open more than a few applications, the mac would crawl. I bought two of these RAMs, and my mac is now running with 12GB RAM (2+2 existing, 4+4 new). All problems solved!

Needed this for Mac, and it worked perfectly.

I got 8gb (2x4) ram for my iMac, and works fine.

Acquistata per installarla nello slot secondario del mio NAS Synology DS218+.Per tutti coloro che leggono questa recensione ed hanno lo stesso NAS: tenete conto che il processore che monta il NAS permette di usare fino a 8GB di RAM, pertanto potete aggiungere un banco da 4GB, oppure uno da 8GB. Nel primo caso avrete 6GB (4+2) a disposizione, nel secondo 8GB (8+2) perchè nonostante abbiate fisicamente 10GB di RAM il processore può usarne solo 8.Per ora ho avuto 2 mesi di attività ininterrotta e zero problemi col banco di RAM

fast delivery.good packaging.just plug the memory card and it works well.

great little stick of ram, was in perfect condition when it arrived and replaced a 2GB dead ram stick. My EliteBook 8540p is now running as efficiently as it can be running with 6GB of ram. I'll definitely buy another one from crucial should I need to.

No hay mucho que decir es una de las marcar mejor que hay en el mercado y uno que se dedica al mundo de la informática es lo máximo los mejores fabricantes los recomiendo a su totalidad. relación precio inigualables lo mejor de lo mejor.

Easy to install in a white unibody macbook. Originally came with 2GB RAM, and upgrading to 8 provided a huge performance boost.I used the instructions found here:https://www.ifixit.com/Guide/MacBook+Unibody+Model+A1342+RAM+Replacement/1666