What memory card will work on my Dell Optiplex 755?

[netty327]

My Dell Optiplex 755 needs more memory. My system is Intel (R) Core (TM) Duo CPUs 2.20 GHz and l 2.19GHZ, Installed Memory 2.00 GB System Type 64-bit Operating system. What do I buy that works and will improve speed and efficiency.

 

[stdragon]

http://www.crucial.com/usa/en/compatible-upgrade-for/Dell/optiplex-755-series-%28desktop-mini-tower-and-small-form-factor%29

8GB total. Also you're looking having to replace your existing 2GB memory if you want to max it out.

 

[The Paladin]

normally on a OptiPlex 755 (and you need to confirm this by looking inside the case) the system has 4 slots for ram, ands 8GB is the highest in 99% of cases for 775 CPUs' thus DDR-800/667 being the two possible speeds used on the said motherboard.

Ao your looking at DDR2-6667 or DDR-800mhz, 4x2GB DDR2 ram NON ECC you will need to buy them as a quad pack or two sets of two
matching your current 2Gb to another is not a good idea on this type of motherboard, it will likely lead to more issues than solutions.

it will improves the system speed yes... I run a Q9400/8GB and when it was a 2Gb it was painful to use, now it runs win 10 and with a GT720 it is a perfectly good workstation to have in my office.

I would not use an SATA SSD, the loss of performance on a 6GB/s SATA they are designed force to run as a 3GB/s on your motherboard will not show great improvement over a 7200 HDD to be honest.

 

[netty327]

http://www.crucial.com/usa/en/compatible-upgrade-for/Dell/optiplex-755-series-%28desktop-mini-tower-and-small-form-factor%29

8GB total. Also you're looking having to replace your existing 2GB memory if you want to max it out.

 

[netty327]

Thanks for your help. Will let you know how it goes when I get the Ram and how good it works.

 

[william p]

Dells take x64" low density" RAM. The cheaper x128 "AMD" RAM won't work. In 2 GB modules this means chips on both sides.
That an also support up to a Q9650 CPU, although Q9550 is poular due to lower cost.
Here are some builds on that system.
http://www.userbenchmark.com/System/Dell-OptiPlex-755/3939

 

[Kisianik]

Dells take x64" low density" RAM. The cheaper x128 "AMD" RAM won't work. In 2 GB modules this means chips on both sides.
That an also support up to a Q9650 CPU, although Q9550 is poular due to lower cost.
Here are some builds on that system.
http://www.userbenchmark.com/System/Dell-OptiPlex-755/3939

Also, if necessary, RAM can be upgraded to 16 GB, I have a few Dell Community posts about supporting this statement.