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Optiplex 780 compatibility
Ok so I am trying to upgrade the ram in my optiplex 780. I am trying to upgrade it to 4gb so I can run a program for my school classwork. I know if it's 32-bit I can only have 4gb readable. The ram stick in it is a 2gb pc3-10700 667Mhz part number NT2GC64B8HC0NF-CG. Well I tried taking a ram stick out of my optiplex 3020. It's a 4gb pc3-12800 800Mhz part number HMT451U6BFR8C-PB.
My question why do I only get beeps when after it's inserted? Why would it not be compatible if it's out of another dell optiplex? I read somewhere that it is possibly too slow for it to read it.
robert p
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December 7th, 2016 04:00
Hi spellman1989,
Thanks for posting.
Unfortunately not all Optiplex RAM is interchangeable. The reason you are hearing the error beeps is because the new RAM is incompatible. To find compatible RAM with a guaranteed return policy check out Crucial: http://dell.to/2ga7NY5
speedstep
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December 12th, 2016 09:00
You cant use quad rank High density 4gig modules in the 780.
HMT451U6BFR8C-PB is a high density 4 gig module.
https://www.amazon.com/Upgrade-OptiPlex-Desktop-PC3-10600-NON-ECC/dp/B007HAXTSQ/
Low Density DDR3 PC3-10600 Unbuffered, NON-ECC, DDR3-1333, 1.5V, 512Meg x 64