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September 17th, 2021 08:00

Optiplex 3050 motherboard in 3040 case?

Will it swap, no worries? Or are the bolt holes in different spots and perhaps wiring harness from the PSU isn't long enough or other little things?

Does the front panel and back panel I/O line up right?

I'm thinking of upgrading this box since I'm having random freezes with no activity on the pc after several minutes up to 30 minutes sometimes. The only thing I haven't swapped out is the power supply, motherboard, and cpu.

9 Legend

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11.5K Posts

September 17th, 2021 08:00

mounting 3050 in 3040 case might work although psu are not interchangeable.  3040 has 8 pin, 3050 6 pin.

redxps630_0-1631893649620.jpeg

3040 MT

 

3040 

Physical dimension
FEATURE SPECIFICATIONS
Height 350.00 mm (13.77 inches)
Width 154.00 mm (6.06 inches)
Depth 274.00 mm (10.78 inches)

3050MT

Height350.52 mm (13.8 inches)

Width154. mm (6.1 inches)

Depth274.32 mm (10.8 inches)

 

3040

3050

September 17th, 2021 11:00

You're the man, man! Seems to be the same outline and curves. Anyway to tell if the bolt holes have the same alignment? And if the 3050 PSU fits in the 3040 case?

6 Professor

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8K Posts

September 17th, 2021 17:00

I didn't find PSU dimensions, but both MT's have 240w PSU.

6 Professor

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8K Posts

September 17th, 2021 17:00

The only way I know of to tell if screw holes have same alignment is to compare images.

3050 MT MB Image 

3040 MT MB Image 

To make sure front and rear panel layouts are the same:

https://www.dell.com/support/kbdoc/en-us/000129369/optiplex-3050-visual-guide-to-your-computer 

https://www.dell.com/support/kbdoc/en-us/000153057/dell-optiplex-3040-visual-guide  You'll need to scroll down some in this one to get to the MT.

9 Legend

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11.5K Posts

September 17th, 2021 18:00

Re: And if the 3050 PSU fits in the 3040 case?

No the psu have different proprietary connectors.  3050 has 6 pin + 4 pin, 3040 has 8 pin + 4 pin.

redxps630_0-1631929227902.jpeg

3040

redxps630_3-1631929277169.jpeg

3050

6 Professor

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8K Posts

September 17th, 2021 19:00

Hi @redxps630,

"Optiplex 3050 motherboard in 3040 case?"

I believe what @CharlesIsWorking wants to do is also put the 3050 PSU in the 3040 case with the 3050 MB.

9 Legend

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11.5K Posts

September 17th, 2021 19:00

that would work.  the TFX psu in 3050 and 3040 have same form factor.  It is an easy swap.

9 Legend

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11.5K Posts

September 18th, 2021 05:00

re: Anyway to tell if the bolt holes have the same alignment? 

99% sure that the 3050 and 3040 cases are identical in engineering design.  Dell basically switched motherboard between the two models and dropped the older proprietary 8 pin atx motherboard design and adopted the 6 pin which is now ubiquitous across almost all Dell desktop models.

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