Help with Upgrading CPU for Optiplex 745 SFF

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.
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  1. 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:
  2. Hi :)

    It is too ancient....NO WAY are you getting anywhere near even 3 ghz....

    All the best Brett :)
  3. 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.
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