Hi ,  

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Thanks for your reply.

There are several options for upgrading the processor, including sandy bridge and ivy bridge processors.  My question is this: 

Will any Intel LGA 1155 socket processor work in my 790?

There is a

Intel Core i7-3770K Ivy Bridge 3.5GHz (3.9GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000 BX80637I73770K Manufacturing Tech: 22 nm

that is actually less expensive than this:

Intel Core i7-2700K Sandy Bridge 3.5GHz (3.9GHz Turbo) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 BX80623i72700K Manufacturing Tech: 32 nm

I just don't want to buy the Ivy Bridge processor and find out that it is not compatable.

Thanks for your help on this issue.

Hello Buddtx,

Thank you for replying. As I have mentioned that the Optiplex 790 has a Intel Q65 Express Chipset and was tested and shipped with Intel Core i7 2600 / 3.40GHz and Intel Core i7 2600S / 2.80GHz.

However, looking at the specification of the Intel Core i7-3770K Ivy Bridge 3.5GHz (3.9GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000, and comparing it with Intel Core i7-2700K Sandy Bridge 3.5GHz, I would like to inform you that, it should be compatible with the system. 

Thanks!

Hi,

Glad to be of help!
Please feel free to write back to us for further queries in future. I'd be glad to assist you further.  

Hi Teribithia,

Really good to know that my information was helpful for you. 

I found something interesting, hoping a dell tech person can confirm.

I believe that the Dell Optiplex 790 DOES NOT support Ivy bridge, because it uses the Intel Q65 Chipset.

The 790 uses the Intel® Q65 Express Chipset. (Verified - not my question )

www.dell.com/.../pd

I believe that the Intel Q65 DOES NOT support Ivy bridge.

The Wiki page says this:

Sandy Bridge chipsets, except Q65, Q67 and B65, support both Sandy Bridge and Ivy Bridge CPUs through a BIOS upgrade.

en.wikipedia.org/.../LGA_1155

The Intel Website for the Q65 Express Chipset does not list any "Ivy Bridge" i7 chips.

Intel Core i7

BX80623I72600

BXC80623I72600

CM8062300834302 i7-2600 3.4 GHz, L3 8 MB      

BX80623I72600

BXC80623I72600

CM8062300834302 i7-2600 L3 8 MB, Turbo 3.8 GHz      

BX80623I72600K

BXC80623I72600K

CM8062300833908 i7-2600K 3.4 GHz, L3 8 MB      

BX80623I72600K

BXC80623I72600K

CM8062300833908 i7-2600K L3 8 MB, Turbo 3.8 GHz      

CM8062300835604 i7-2600S 2.8 GHz, L3 8 MB      

BX80623I72600S

CM8062300835604 i7-2600S L3 8 MB, Turbo 3.8 GHz

www.cpu-upgrade.com/.../Q65_Express.html

What got me started on this, was a video on newegg.com about the ivy bridge processor

they listed in the video the intel chipsets that are compatable with the Ivy Bridge processors

Specifically, they mentioned H61- H67 - P67 - Z68

www.newegg.com/.../Product.aspx

I found a reference at PC Magazine also:

Only four motherboards using the 6 Series chipsets support Ivy Bridge (H61, H67, P67, and Z68), but if your computer already uses one of those you already have everything you need.

www.pcmag.com/.../0,2817,2403407,00.asp

Here is a quote from maximumpc.com

However, not all chipsets will make the Ivy Bridge cut. Intel has intentionally left out support for the business chipsets Q65, Q67, and B65 while supporting consumer H61, H67, P67, and Z68. Why leave some out? Intel believes the day of an IT shop getting down and dirty and upgrading processors in an office-drone PC are long gone, so there’s just no reason to expend the resources on unnecessary support. Besides getting the latest core technology from Intel, switching to Ivy Bridge on older 6-series boards should also give you PCIe 3.0 support on some slots.

www.maximumpc.com/.../intels_ivy_bridge_maximum_pc_review

Oh forgot, I tried two different monitors, using the VGA port, and the DisplayPort, just in case there was a DisplayPort issue or monitor issue.

PLEASE HELP - I tried tonight to put a i7 processor into my Dell Optiplex 790.

Specifically, this one:

Intel Core i7-2700K Sandy Bridge 3.5GHz (3.9GHz Turbo) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 BX80623i72700K

Using A16 BIOS (Latest as of 1-5-2013)

Power would turn on, and there were NO POST BEEPS, but there was no video, even video BIOS was not there, but the computer looked like it was booting into Windows 7 64 bit (the same OS).

I tried taking out the i7 chip and re-installing the i3 chip three times, and all three times, the i3 chip booted without problem, but the i7 2700K did not post.

So, can anyone offer any thoughts or help or suggestions as to what to do next?

Please note, this was a 2nd generation SANDY BRIDGE, and NOT the newer 3rd generation IVY BRIDGE.

I have about 25 days or so to exchange (not return) my i7 processor.

I am going to write intel also.

I am wondering if the Q65 chipset does not support the i7 2700K?  

Also, I am wondering if it has to do with the Intel Graphics?  The i3 has Intel HD Graphics 2000, whereas the 2700K (and the 2600K) have Intel HD Graphics 3000?

Thanks for any help you can offer!

Well this is interesting:

Intel's web site on the Q65 Chipset:

ark.intel.com/.../Intel-BD82Q65-PCH

Does NOT list the 2700K as a compatible CPU.

Here is what it lists:

Compatible Processors

Intel® Core™ i5-2400 Processor (6M Cache, up to 3.40 GHz)

Intel® Core™ i5-2400S Processor (6M Cache, up to 3.30 GHz)

Intel® Core™ i5-2500 Processor (6M Cache, up to 3.70 GHz)

Intel® Core™ i5-2500K Processor (6M Cache, up to 3.70 GHz)

Intel® Core™ i5-2500S Processor (6M Cache, up to 3.70 GHz)

Intel® Core™ i5-2500T Processor (6M Cache, up to 3.30 GHz)

Intel® Core™ i7-2600 Processor (8M Cache, up to 3.80 GHz)

Intel® Core™ i7-2600K Processor (8M Cache, up to 3.80 GHz)

Intel® Core™ i7-2600S Processor (8M Cache, up to 3.80 GHz)

So I am guessing that the Q65 chipset and Optiplex 790 DOES support the HD Intel Graphics 3000 processor.

Again, just asking for confirmation as to what the the most powerful CPU I can put into a Optiplex 790.

Thanks.

Sorry for writing so much.

So I guess here is where I am right now:

Unless someone from Dell can confirm that the i7-2700K should work with the 790 (maybe a BIOS upgrade is needed), I personally found out that the i7-2700K does NOT work with the Optiplex 790.

My realistic options are the three i7 2600 Sandy Bridge Quad core CPU's

i7-2600 (Intel HD Graphics 2000) - 3.4GHz (3.8GHz Turbo Boost) (Confirmed works with Optiplex 790-See Post 2)

i7-2600S (Intel HD Graphics 2000) - 2.8GHz (3.8GHz Turbo Boost) (Confirmed works with Optiplex 790See Post 2)

i7-2600K (Intel HD Graphics 3000) - 3.4GHz (3.8GHz Turbo Boost)

I could "try" the 2600K, and pay for shipping both ways, if it does not work, or just get the i7-2600.

The 2600K has the newer HD Graphics 3000, and that would be nice to have, but realisticly, this computer is 100% for business, so the difference between the graphic options would be negliable.  I just want the fastest processor I can get in the 790.

I will wait a few days to see if anyone from Dell can confirm that there might be some hope for my i7-2700K, if not, I will get the i7-2600.

Thanks!

Did any ond pug the I7-3770k in an optiplex 790? Did it work?

sorry to double ask. But I was wondering could I put an i7-4770 k in the Optiplex 790? if you give me the green light I will post my results after the project is completed, along with cooling sysem used.

Bests and Thanks,

George