Closed Help with Upgrading CPU for Optiplex 745 SFF Tags: CPUs Optiplex Product Last response: February 26, 2013 7:39 PM in CPUs Share apoklepz January 30, 2012 4:51:33 PM I was recently given a refurbished Dell Optiplex 745 SFF slightly upgraded with this HDCP card and 4GB RAM. I would like to know if there is a processor out there that would push the machine's performance speed higher than its default one clocking at 1.8GHz. I'd like to hit the 3GHz to 4GHz mark if possible and if the mobo allows it. Any help and guidance is appreciated. Thanks in advance. More about : upgrading cpu optiplex 745 sff abekl a b à CPUs January 30, 2012 4:59:09 PM I think you are out of luck. The cpus that this unit supports have been out of production for a long time. You might be able to find one used on ebay. Use this as a guide in selecting a cpu: http://www.dell.com/downloads/global/products/optix/en/... Score 0 Brett928S2 a b à CPUs January 30, 2012 5:02:25 PM Hi It is too ancient....NO WAY are you getting anywhere near even 3 ghz.... All the best Brett Score 0 Can't find your answer ? Ask ! Get the answer apoklepz January 30, 2012 5:42:44 PM Okay guys, I really appreciate the quick replies but I'd like it if somebody could throw out a few names/model numbers of CPUs that could simply just be faster than the factory one. I found this old thread where the guy says he managed to get the smallest Optiplex 745 USFF model to be faster with a Q6600 SLACR at around 2.4 GHz. Having read this I'm confident that there has to be something that can make my SFF model a bit faster than that but I need direction. Please help with name/model suggestions as I am new to all this hardware upgrading stuff and don't know where to look first. Greatly appreciated. Score 0 Can't find your answer ? Ask ! Publish Related resources Solvedneed help pls dell optiplex 745 sff graphic card Forum ACHI mode in Dell Optiplex 745 sff. Please help. Forum Prebuilt Optiplex 745 SFF upgrade and compatiblity Forum Dell Optiplex 745 SFF upgrade Forum Dell Optiplex 745 SFF power supply upgrade recommendations Forum upgrading Dell Optiplex 745 CPU ULTRA SMALL FORM FACTOR Forum SolvedWhich/Will this Graphics Card fit in a Dell Optiplex 745 SFF? Forum SolvedC2D E8400 on an old Dell optiplex 745 SFF MOBo Forum SolvedHELP PLS.....dell optiplex 745 ssf video card upgrade Forum SolvedUpgrade CPU on my Dell Optiplex 760 SFF Forum Solveddell optiplex 745 dt cpu upgrade? I want to play State of Decay Forum SolvedDell Optiplex 745 CPU Upgrade Forum SolvedDell optiplex 745 best CPU upgrade for me Forum SolvedQ6600 in Dell Optiplex 745 SFF And One More Question? Forum SolvedDell Optiplex 745 MT CPU upgrade! Forum SolvedQ6700 in Optiplex 745 SFF Forum Optiplex 745 cpu upgrade Forum SolvedOptiplex 745 USSF CPU Upgrade Forum SolvedDell optiplex 745 SFF Forum SolvedDell Optiplex 745 CPU Upgrade Forum More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !