Optiplex 780 best replacement memory Tags: Prebuilt Optiplex RAM Dell Memory Systems Last response: October 24, 2012 8:53 PM in Systems Share cpiza54 October 24, 2012 8:35:09 PM Just need a straight answer from someone on the best RAM upgrade for a Dell Optiplex 780. More about : optiplex 780 replacement memory tiny voices a b } Memory October 24, 2012 8:53:06 PM Chances are you have a 32-bit operating system, therefore you will only be able to see 3gb. Buy a cheap 4gb kit. Can't find your answer ? Ask ! Publish Related resources: ForumDELL Optiplex 780 for video editing ForumHow to find replacement bios for a NEW Dell Optiplex 780 ? ForumOptiplex 780 - diagnostic lights problem. ForumReplacement PSU for Optiplex 790 ForumReplacement for evga 780 sli ForumWhat Memory is Compatible With Dell Optiplex GX620 ForumPhic Driver for Dell 780 OptiPlex ForumWhat is the best card fot optiplex 755 SFF? ForumOptiplex GX240 memory increase ForumDell optiplex gx280 cpu replacement pentium 4 540 -> celeron 420 ForumOptiplex Gx620 upgrading ForumUpgrading an old beast - Optiplex gx280 CPU compatibility ForumBest Graphics Card for Optiplex 745? ForumOptiplex 960 SFF, desperate for any gfx card ForumDell Optiplex GX620 + Core 2 ForumDell Optiplex GX620 upgrades ForumHelp Building $700 Gaming PC ForumBest Build For $600 Forum[Solved] Best GaMing System For $600 ForumAsus P6T Deluxe V2 memory concern More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !