Upgrade Tags: CPUs Pentium Dell Last response: June 3, 2010 4:28 PM in CPUs Share peter III June 3, 2010 1:56:23 PM what upgrade should i do to my DELL OPTIFLEX 745 INTEL PENTIUM D...to make it fast. More about : upgrade triplebug June 3, 2010 2:03:23 PM Well, you're using socket 775 and you can upgrade your processor to dual-core(Intel Core 2 Quad Q9550, Intel Core 2 Duo E8400) but it won't last long. Maybe consider purchasing a new build? Here's some really informative and recommend buy from tomshardware's review. http://www.tomshardware.com/reviews/balanced-gaming-pc-... saint19 a c 158 à CPUs June 3, 2010 4:28:48 PM Hi newcomer and welcome to the Tom's hardware forum. The best way to know what CPU u can upgrade is, contact to DELL CHAT SUPPORT using ur service tag and ask it the same. I do it for u with a rig that I have in my job, and the max CPU that u can upgrade is the Intel Pentium D series, so, the recommendation of Core 2 quad isn't valid Can't find your answer ? Ask ! Publish Related resources Where can I find a good mechanical keyboard? Forum What type of processor can i upgrade my packard bell easynote R1938 to Forum CPU Upgrade Forum Need to upgrade GPU or CPU Forum PSU Cooling upgrade? Forum Upgrade from E8500 to Q9650? Forum Help with Upgrade? Forum [Solved] Upgrade bios question Forum Celeron 530 upgrade Forum Older CPU upgrade Forum More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !