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1 Rookie

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3 Posts

13172

January 28th, 2019 13:00

Upgrading my old Optiplex 780

Hello guys.

I have the Optiplex 780 with a motherboard Dell 0c27vv and I would like to upgrade it to the ultimate point it could get!

I wanna change to the following:

CPU: Intel Core2 Quad q9650

GPU: GTX 1050 ti mini 4Gb

RAM: DDR3 1333 MHz total: 10Gb

Power supply: 600 W.

Are these components compatible with each other? Can I even maximize?

Thank you so much

 

3 Apprentice

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573 Posts

January 28th, 2019 22:00

Hi @Auday MOORE ,

Base on the part number 0c27vv, your Optiplex 780 should be a MT version.

CPU

Base on UserBenchmark: Dell OptiPlex 780 Compatible Builds results, Q9650 owns the highest benchmark.

GPU

GTX 1050 ti is one of the best choice among modern 75w GPU (i.e. powered by PCIe and no need extra power source). Their benchmark ratings above average. Unless you'd like to invest more on something like 1060 or even 1070/2060/2070, 1050 ti should fit your needs.

RAM

Rule number one: Always check on official setup guide before any new hardware purchase. Page #7 tells you that Optiplex 780 support 1066 MHz DDR3 SDRAM (non-ECC only) up to 16GB on 4 DIMM slots. DDR3 1333MHz is not supported! Check out this thread that a Dell staff confirm it already. 

PSU

Stock PSU for Optiplex 780 should be in 305w. If you plan to use a low power GPU like GTX 1050 ti, it should be fine with the existing PSU. Besides, Optiplex 780 only sold at this PSU without options to a higher power one. You may have to consider 3rd party PSU if needed.

 

1 Rookie

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3 Posts

January 29th, 2019 04:00

God bless you man.

However, my computer is currently using 1333 MHz RAM and it works fine.

Regarding the GPU: Is it possible to upgrade to 6gb or even 8gb? as you said I could install the 1060. I should use the lower profile version though, right?

PSU: I have seen builds where they actually changed the standard PSU to another with 450w, which means it could be changed. I guess I have to take the 24 pin connector into account though. I'm gonna go deeper through that.

Thank you.

 

 

3 Apprentice

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573 Posts

January 29th, 2019 11:00

Hi @Auday MOORE ,


However, my computer is currently using 1333 MHz RAM and it works fine.

Check out another reply right below the Dell staff on the same post:

"...PC3 10600 1333Mhz that its clocking down to 1066mhz"

Maybe the same story as what happened on yours. Check with CPU-Z to see the actual clock speed of your current memory being running at.


Regarding the GPU: Is it possible to upgrade to 6gb or even 8gb? 

Memory size on a GPU would not be a dependence, e.g. if a system works with 1050ti 4GB, it works with 6GB version as well.


As you said I could install the 1060. I should use the lower profile version though, right?

As per Userbenchmark's records, do have builds installed with GTX 1060-3GB. And yes you need a low profile one. Check out page #15 of the Technical Guidebook and it tells you that only half-height low profile GPU can fit into the PCIe x16 slot. Besides, different from low-power 1050ti, 1060 maximum power consumption at 150w. Make sure that PSU comes with a 6-pin PCIe power connector.

1.jpg


PSU: I have seen builds where they actually changed the standard PSU to another with 450w, which means it could be changed. I guess I have to take the 24 pin connector into account though. I'm gonna go deeper through that.

If GTX 1060 is the target GPU, you really need a more powerful PSU. Make sure the new PSU with 80 Plus certified.

 

7 Technologist

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9.2K Posts

January 29th, 2019 16:00

Optiplex 780 Tech Guide

Also, I looked for copyright dates on the tech guides to see which one is newer, mine or bmcowboy's, and couldn't find any.

7 Technologist

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9.2K Posts

January 29th, 2019 16:00

The tech guide I have shows the 780 can run 1,333MHz RAM.  Why there's 2 different tech guides for the 780, and the setup manual noted, I don't know.  After answering enough posts, I never heard of the 780 not being able to run 1,333MHz.  As @Auday MOORE stated if I remember right, 1,333MHz was already being used.

Make sure all chips are same capacity, MHz, and name brand.  Crucial is recommended since it's guaranteed to work in Dell's.  Kinston Value Brand (KVR) almost never works.  The volts can be off in off-brands.

In relation to RAM, no blame goes to bmcowboy for info given.  We can only work with what's presented sometimes; and sometimes we run into conflicting info.

Capture+_2019-01-29-18-19-43.png

 

7 Technologist

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9.2K Posts

January 30th, 2019 14:00

I too, found reliable references as to the max 1066MHz when I Googled "...max MHz ram."  Some references lead to Dell Community.  Speedstep, a reliable Rockstar, mentioned the same max.

(Easier to make a new post than to edit previous post due to jumpy interface when trying to place cursor.)

7 Technologist

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9.2K Posts

January 30th, 2019 14:00

You're welcome and no apology needed.  I also noticed that one of the references bmcowboy used was a Dell employee stating the max MHz for the 780 is 1066 and I can always stand corrected when done right.

The tech guide I have should've probably been made unavailable for download, but it still is and on the Dell site.  Proprietary Dell should've used copyright dates on their pdf manuals.

1 Rookie

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3 Posts

January 30th, 2019 14:00

Thank you so much guys for the information. I guess I know what to do now.

P.S. I rechecked the speed of RAM and it is indeed 1066. Sorry about that.

17 Posts

February 1st, 2019 09:00

I also have a 780 SFF and the OEM power supply is 235 watts. I put a GeForce 710 low profile in it (no fan) 1gb and it would fail approx twice a day. If you read the specs on your PS and the min specs for any decent video card you will see there is insufficient power for the card. It was close with my 710 but failures and re-boots .

And an upgrade PS to fit the Dell SFF case I have yet to find, anywhere. Its a bummer because I really like my old 780 Intel Core Duo SFF machine.

7 Technologist

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9.2K Posts

February 1st, 2019 11:00

Hi @Plato1960,

https://m.youtube.com/watch?v=tz9CtUHlssY

The video is of Optiplex XE 280w PSU going into a 780 SFF and/or etc. SFF.  It's not much more power, but some people do it.

7 Technologist

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9.2K Posts

February 1st, 2019 17:00

A 780 SFF can still take an Intel Core 2 Quad Q9650, the max CPU for it.  Some people also use SSD's to breathe new life into that generation of Optiplex's.  I promised I would edit if I found out the max capacity:

According to Crucial, whose products are guaranteed to work in Dell's, "You can install our largest 2TB MX500 SSD in the 780 Optiplex."  The same goes for a 755, "It appears since they both use a standard SATA connection they will be compatible with any of our 2.5" drives."  So for 780 and 755 readers, there it is.

17 Posts

February 2nd, 2019 11:00

I put an Intel 530 series 250 gb SSD in mine, bumped up the ram and it is quite a snappy little machine with Win 7 pro. I'm going to investigate the 280 watt PS swap, that little bit might make my GeForce card install totally reliable. Thanks for the tip on the PS, Brad.

 

Edit: My MSI GeForce 710 (half height, no fan) video card calls for a minimum of 20A on the 12 volt rail. Both the 235 and 280 watt PS are rated @ 17A. So from the specs on the respective PS labels, the 280 probably will provide no improvements for my video card install.

7 Technologist

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9.2K Posts

February 2nd, 2019 17:00

You might know - 12v x 20a = 240w.  Mentioned earlier by bmcowboy, "a GTX 1060-3GB is 150w max, but make sure that PSU comes with a 6-pin PCIe power connector."

Bmcowboy also mentioned  "GTX 1050 ti is one of the best choice among modern 75w GPU (i.e. powered by PCIe and no need extra power source). Their benchmark ratings above average. Unless you'd like to invest more on something like 1060 or even 1070/2060/2070, 1050 ti should fit your needs."

Hopefully the above helps  You mentioned your GPU failing at least twice a day, so may be one of those cards can be a cure.  Keep in mind at the time, in discussion was a 780 MT.

Fun to hear your 780 is a "snappy little machine."

17 Posts

February 3rd, 2019 01:00

Brad, you need to study those power supply labels a bit more. 12 volt is not the only voltage supplied, so you cannot make the assumption 12Vx20A = 240 watt. Well you can, but its not accurate. From the Dell 280 watt PS label:

12V = 17A

24.8V = 3A

5V = 16A

3.3V = 6A

-12V = .5A

+5VSB = 4A

MAX power 280W

13 Posts

February 3rd, 2019 03:00

 Assalam-O-Alaikum......!!!!

 

How's U All guys ??

My Question is : Can i use Corsair 8GB (4×2) SDRAM 1600mhz in Dell optiplex 9010 for running fast and good speedy performance ???

Specification:

optiplex 9010

core i5-2400

4Gb 1333mhz

Thanks..!!

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