Cosmopull
1 Nickel

Supported CPU for Optiplex 780

I want to get advice regarding supported CPUs which could be installed on Optiplex 780 intead of

Pentium DualCore E5500 2.8Ghx2 which currently i got..

According to specs:

Dell Optiplex 780 Motherboard. Dell Part# 200DY 0200DY Featuring Intel Chipset LGA775. The Intel board harnesses the advanced computing power of the latest Intel Pentium 4 LGA775 processor supporting Hyper-Threading Technology.

Specifications:

Processor Type:
Intel Core 2 Duo; FSB up to 1333 MHz
Intel Core 2 Quad; FSB up to 1333 MHz
Intel Pentium Dual Core; FSB up to 1066 MHz
Intel Celeron; FSB up to 800 MHz

Memory Type: DDR3 SDRAM
Memory Capacity: 1 GB or 2 GB non-ECC
Minimum Memory: 1 GB
Maximum Memory: 8 GB

My intention is to upgrade CPU to Quad Core.

If so, which quad core cpus does motherboard support ?

8 Replies
7 Plutonium

RE: Supported CPU for Optiplex 780

OptiPlex 780 Technical Specifications

The quads require the COPPER performance heatsink.

Some also mod the case for smaller units due to overheating.


http://i.dell.com/sites/doccontent/shared-content/data-sheets/en/Documents/optiplex_780_tech_spec_sh...

 


Processor Options

Intel® Core™2 Quad (not available on USFF);

Intel® Core™2 Duo;

Intel® Pentium® Dual Core;

Intel® Celeron® Dual Core;

Intel® Celeron®

Chipset Intel® Q45 Express Chipset w/ICH10DO


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Cosmopull
1 Nickel

RE: Supported CPU for Optiplex 780

I have SFF  form factor.  Will it fit Intel Core 2 Quad Q9650 3.0Ghz ? This one desirable as it has 12Mb L3 cache size.

0 Kudos
7 Plutonium

RE: Supported CPU for Optiplex 780

SFF power supply is too small and it doesnt have copper heatsink by default.

RW134 Copper heatpipe Heatsink is for DESKTOP no idea about SFF.


317-2464 C452H    

OptiPlex 780, Core2 Quad, 9650  

with VT/ 3.0GHz, 12M, 1333FSB YOR, E0

Bios may not be proper level as well.

 

OK I found the SFF heatsink

Original Dell JP911 Heatsink+Shroud Assembly For Optiplex 380, 740, 740e, 745, 745e, 755, 760, 780, GX520, GX620, Dimension 5100c, 5150c, XPS 200, 210, 9200c, Small Form Factor (SFF) Systems, Compatible Part Numbers: CC079, D9416, H9441, M9018, NP048, UP048, G9583, H895D, MR313

https://www.amazon.com/Original-Dell-Heatsink-Dimension-Compatible/dp/B004578KCO


 


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Cosmopull
1 Nickel

RE: Supported CPU for Optiplex 780

"Bios may not be proper level as well."

This one i afraid the most if bios just won't recognize it. But i think should be because motherboard supports such CPU.

Also regarding power it is not a bottleneck for sure, according to Intel data-sheet E5500  has 65Watt and Q9650  95Watt. So only 30 watts more.

0 Kudos
9 Rhodium

RE: Supported CPU for Optiplex 780

30W is almost 50% more power consumption (and the resultant heat generation).  It's not a trivial increase.

0 Kudos
7 Plutonium

RE: Supported CPU for Optiplex 780

Tower has 305W power supply, Desktop has 270W power supply  SFF has 220W power supply.  If one version of bios worked for all processors there wouldn't be later versions with new microcode. There are in fact 15 revisions of the bios that I see.  They always start at A00.

A15,A15 03 Sep 20135:43:50 AM
A13,A13 26 Jul 20122:16:45 AM
A12,A12 26 Dec 201112:12:00 AM

 


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1 Copper

RE: Supported CPU for Optiplex 780

@SpeedStep

When PSW limit factors are counted,  would a Q6700 work, then?

0 Kudos
7 Plutonium

RE: Supported CPU for Optiplex 780

Q6700 will not work in SFF or USFF.



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