I own an Asus K55n-DB81 with 6GB of RAM, A8-4500M processor, HD 7640G graphics. I bought this as an upgrade to boost the RAM to 8GB. I play Elder Scrolls Online as well as World of Warcraft with my laptop and wanted to boost the graphics on the games.

I was having performance issues with my Mac so I called Apple. They suggested adding more memory so I went to Micro Center to get the part. I'm not technical so I asked the Apple guy at Micro Center if he could give me a few tips and he was very helpful.

I had upgraded my DELL Insprion laptop earlier in the year by adding one of these modules...my original DELL module has since developed a fault (diagnosed using the BIOS Tests), so I am replacing it with another one of these modules, which passes all of the BIOS memory tests (which are pretty...

Great service by PB tech explained what RAM I needed and it was easy to install . This product sped up my laptop for sure Thanks PB Tech team

This Memory is working great in my old MacBook and the performance difference is huge I would highly recommend this product and PB techs delivery is always hassle free and quick.

i have purchased quiet a few thing from pb tech and found all to be good and starf alway helpful so thank you to all that work at pb tech

Did exactly what I wanted - sped up the old laptop significantly.