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MysteriesOfDell
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March 30th, 2016 14:00
Optiplex 790 CPU support
I have an Optiplex 790 DT, with a Core i3-2120. I would like to upgrade the CPU to an i7-2600. I have seen this combination advertised, and have come across postings which indicate that it is officially supported.
BIOS version A18, which I have, has notes indicating that support for Sandy Bridge is provided.
The owner's manual for the 790 DT indicates support for i7 Quad Core processors.
I attempted to install the i7-2600, and the machine powers on, but there is no video output, and no POST beep. The hard drive spins up, and the fans also do.
Replacing the Core i-3 processor allows the machine to run normally.
What else needs to be done in order to get the machine to recognize the CPU ?
Responses (5)
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Please, Dell, answer this question. In the other thread about this subject they say it`s possible to do upgrade but people have tried with no success. I`m waiting for a concrete answer in order to buy the i7-2600.
Cris from Dell said that these are the compatible cpus:
706FY -
i7-2600,3.40GHz,4C,SandyBridge,D2 (Optiplex 790/990, Vostro 460/470, Alienware X51-R1, XPS 8300/8500)
605FF -
i7-2600S,2.80GHz,4C,SandyBridge,D2 (Optiplex 790/990, Inspiron One 2320, Vostro 360)
The question is:
CAN I BUY A INTEL I7-2600 CPU (a Intel aftermarket used one, not from DELL) AND USE IT ON THE OPTIPLEX 790 IN ORDER TO UPGRADE FROM THE i3-2120?
Is there some setting that needs to change in the bios (A18) menu?
Dell, there are a lot of questions like this one about the OPTIPLEX 790 upgrade with no clear answer!
Please, I`m asking this because my workflow NEEDS this upgrade.
Hi, just to say I just successfully upgraded my Dell OptiPlex 790 from an Intel i3-2120 to an Intel i5-2500 procured on eBay, without checking OEM parts etc.
For those wanting an i7-2600, the symptoms sound like an onboard graphics failure (system boots, but no video). I have seen images of OptiPlex 790 devices which have the VGA port blocked off (Google search for them) - I wonder if this is supported with the i7? It would be worth trying setting up with the DisplayPort instead. Or upgrading the graphics so that the onboard is bypassed - might get it working? Please post success/failure here so we all know!
Hi, just to say I just successfully upgraded my Dell OptiPlex 790 from an Intel i3-2120 to an Intel i5-2500 procured on eBay, without checking OEM parts etc.
For those wanting an i7-2600, the symptoms sound like an onboard graphics failure (system boots, but no video). I have seen OptiPlex 790 devices which have the VGA port blocked off - I wonder if this is supported with the i7? It would be worth trying setting up with the DisplayPort instead. Or upgrading the graphics so that the onboard is bypassed - might get it working? Please post success/failure here so we all know!

pedroken
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7 Posts
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Posted July 9th, 2016 00:00
OPTIPLEX 790 DT, just to be clear.
Thank you.