Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3 1333MHz PC3-10600 CL9 for Mac Book Pro (Early/Late 2011 13/15/17 inch), iMac(Mid 2010, Mid/Late 2011 21.5/27 inch), Mac Mini(Mid 2011) MAC RAM Upgrade

Installed this in iMac (21.5-inch, Mid 2011) w/ 2.8 GHz Intel Core i7 and AMD Radeon HD 6770M 512 MB. Had this computer for more than 10yrs, but hadn't started it up 2019. It powered up just fine at first, then it shut off suddenly and started the 3-beep sequence. I looked it up and was surprised it had to do with memory since I've worked on computers for a while and never heard of that being an issue, especially for Mac. I accessed the memory and shuffled it around a couple times, but the error persisted. These were just a couple of 4gb Hynix modules that had to of been original to the computer. Saw that many were upgrading in excess of the 16gb recommended by Apple, so decided I would try the 8gb stick to see if they did the trick, and OH YEAH they make a huge difference. Even though Apple's not allowing any more upgrades, this thing is blazing with High Sierra. Will be adding another 16gb soon to max it out at 32gb. For about $20 it's a no brainer! If they're compatible with your model I would advise you to grab them ASAP to breath some new life into your old iMac. Next I'm going to work on upgrading the video card and display because this i7 is working like a champ!

I used this to upgrade my late 2009 27 inch iMac which really needed the boost when I decide to upgrade the OS beyond what Apple normally allows. The install was simple on an iMac and they were recognized by the OS without issue. Doing some checking, it seems the specs are exactly as advertised and when I did a complete memory test I had no errors of any kind. Like most memory for computers you can usually get it to fail by hitting it hard right out of the gate if there is anything wrong with it. No matter what I threw at it, it kept going and didn’t crash meaning that it will probably last a good long time. At this price, it’s well worth it to bring some life to an old system. If you want to upgrade your old Mac to a newer OS, you can look up OpenCore Legacy Patcher and that will get you on the right track.

I have an iMac 27”, mid 2011, with original 4 g ram, with two open slots. Over the last year or so, it just kept getting slower and slower, then started a kernel panic restart every other day or so. I searched the web for possible fixes. Most responses pointed to the ram is too low. So, after looking at various providers for this type product, I saw this one. It had continual high ratings and statements that installing these two additional cards fixed everything. I also learned that if you use the Chrome browser, it can also be part of the kernel panic restart issue. I quit using that browser as well, and had no other panic restarts of the system. I ordered these, received in two days, and installed in less than 5 minutes, yes, 5 minutes. It’s as simple as loosening 3 screws on bottom of monitor and pushing the two cards in the slots. Power back on, and fixed. My iMac now runs line it used to run, fast. It has not restarted due to panic kernel errors either. If you have an older iMac giving you speed issues, and panic restarts, try this ow cost option to fix it.

Easy to install and a fantastic upgrade to my early 2011 MacBook Pro, which was slow as heck even when I bought it newly refurbished from Apple in 2012 (2+2 GB RAM and a dual core i5). It can actually handle running multiple applications now as well as multiple tabs and windows in Chrome. I was originally going to buy OWC branded RAM, but this was cheaper and was reviewed just as well. In conjunction with upgrading the hard disk drive to a solid state drive, my computer feels much more stable and quick. While macOS support for this model ended with High Sierra (the last before Mojave), it's still useable today thanks to this upgrade, and I can keep it running for another year or two before I can afford a new model. Like other reviewers have mentioned, certain older MacBook Pro models like mine can unofficially handle up to 16 GB of RAM (Google the year and model to find out), despite Apple saying they're capped at 8 GB. It's worth the extra cost to go whole hog even if you don't think you'll need it.

Works great on my Dell Latitude E6420 (even though Dell’s paperwork lists 8 GB as the official limit).

Boot up and program loading is now faster since upgrading my old Mac from 4GB to 8GB DDR memory. The memory units arrived quickly and installation took under 30 minutes. The only tricky part was getting to the lower of the two units (for both removal and installation), which was hard to access in a tight spot.

Bought these to upgrade an older (late 2011) Macbook Pro that came with 4Gb of total RAM. Owner manual for the computer says it can be upgraded to 8Gb. Online blogs suggested the computer would recognize 16Gb. So it was an experiment. RAM modules came nicely packaged and the URL timetecinc.com on the package label takes you to their web site where they include some installation tips and guides. Install was easy. Keep track of the tiny screws for the Mac case. DDR memory is stacked one over the other and are truly plug and play to replace. My mac is noticeably faster booting and recognizes the full 16Gb I installed.

I was skeptical for two reasons: I don't have amazing manual dexterity so I don't usually like taking apart phones or laptops, etc. and I didn't know if it would actually effect my laptop positively but really wanted to try it since the stock RAM was basically MATCHING the amount of RAM required to run the operating system since 2017 updates (approximately). However, the install was VERY easy - it actually didn't read the 2nd RAM slot after my first try and I just re-opened it and secured it better - no problem. Secondly, my laptop is very fast again which makes me super satisfied! My startup time is still slow on my Early 2011 version of Macbook Pro, but once it is all started up - my speed is great for such an old laptop that I've had since college!

Only show RAM, but not working smooth

Funcionaron excelente.

A entrega foi rápida. Produto bem embalado e de excelente qualidade!

Funciona perfecto con una MacBook late 2011