I have a Dell dimension 8400, with Win 7 Ultimate 3gs of memory, try to replace Tags: Chipsets Memory Dell Dimension Motherboards Last response: August 28, 2010 1:50 AM in Motherboards Share Anonymous a b } Memory a b V Motherboard August 28, 2010 12:55:40 AM Hello, More about : dell dimension 8400 win ultimate 3gs memory replace o1die a c 128 } Memory a c 435 V Motherboard August 28, 2010 1:50:09 AM 3 gigs of ram will run windows 7 fine; dell boards can be picky about ram upgrades. I would leave it alone, even if using the 64bit windows 7. Spending the money won't gain you enough to make it worthwhile. m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedHow can I get my Dell Dimension 5100 machine running windows 7 ultimate 64bit to support anything higher than 4 gigabytes of R Forum SolvedDell Dimension 8400 - XP or Windows 7 Forum SolvedInstalling Toshiba 3TB HDD on Win7 Ultimate 64 bit Dell 8300 Forum replace drivers not included in win 7 ultimate Forum SolvedCan't create new partition for win 7 ultimate reinstallation on dell Forum Old Dell Dimension B110 computer. Friend upgraded OS to Win7Pro and added 2GB of RAM. Bought new monitor and changed resolut Forum Can't Install Win2K Or XP Pro on Dell Dimension 8400 with .. Forum I have a dell dimension 3000 I m am trying to up grade to windows 7 and keeps crashing on me Forum Adi codec for Dell Dimension 8400 windows 7 Forum Dell Dimension 8400 PSU replacement Forum Advice needed in replacing motherboard in dell dimension 8400 Forum Dell Dimension 9200 upgrade from XP to Win7 ? Forum Advice needed on best practices for upgrading of Mobo, CPU, Memory and GPU under Win7 Ultimate with SSD/HDD Forum Why does my dell try and boot win 98 instead of win 7 Forum my dell vostro win 7 32-bit has 4 gb (2*2) but its only showing 2 gb memory only...? Forum When install win7 ultimate into dell inspiron n5110 shows blue screen Forum Dell Dimension 3100 Video Card compatible with Win7 Forum [Solved] HELP!! Installing Win 7 on a Dell 8400 Running out of time Forum Dell Inspron 1420 web cam driver for win7 ultimate Forum Win 7 not compatible with Dell Dimension C521 ? Forum More resources Read discussions in other Motherboards categories BIOS Boot Chipsets ASRock Asus Chaintech DFI Elitegroup FIC Foxconn Gigabyte Intel MSI-Microstar !