Samsung MV-3T4G4 4GB DDR3 Laptop SDRAM (1333MHz PC3-10600)

Samsung’s DDR defines next-generation memory. The advance Samsung-designed 40nm-class technology enables us to shrink the charge needed to achieve full-scale power-making high performance and energy efficiency one. You gain computing power, while using less power. Incredible quality control, unparalleled manufacturing standards and a decades-long commitment to excellence mean that when you buy a stick of Samsung DDR you are making a solid investment.

Samsung MV-3T4G4 4GB DDR3 Laptop SDRAM (1333MHz PC3-10600)

 

So this ram is identical to what you'll be pulling out. Its also a very tight fit :) Remember how hard it is when you pull the first ram module out as a gauge for how hard it will be to push the others back in. I found it easiest to push the top one in first and then pushing in the bottom one, almost bracing steady against the first. However doing the bottom first could give you more room for you fat fingered folk. If you get a loud medium toned "beep", then they are not pushed in all the way. Enjoy saving yourself $425 from what Mr. Job's charges for this upgrade! So easy a Caveman could do it.

Purchased two sets. First for Sony VAIO F series laptop and second for iMac (21.5 iCore5 2.5 GHz mid 2011). In both cases, RAM fit as glove and performs are outstanding. For both machines Samsung RAM was OEM. I am happy with it on both machines.

I used this on hp notebook as the second DIMM. It happened that the first one was actually the same brand.

No problems have arise since I put it to work.

I'm always cautious when adding supplemental disks or RAM: Your productive server or workstation can become unreliable and even corrupt your data. So, I'm very satisfied with this product because it has worked flawlessly.