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Ender3D
1 Nickel

Inspiron 3670, PSU upgrade

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Hello,

I purchased an Inspiron I3670-5750BLK-PUS without realizing that the power supply did not have any spare wires on it for extra components. I would like to add a graphics card to the PC, but as the power supply does not have any extra wires, this is not currently possible. Are there any options to upgrade this proprietary PSU?  It looks like a standard ATX power supply will not work as the power connector on the motherboard is an 8 pin rather then the standard 24 pin.  There is also a 4 pin on the opposite side of the board. 

EDIT / UPDATE:
I found one of these:
https://www.amazon.com/gp/product/B01A210HKO/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

24 Pin to 8 Pin PSU connector.  Grabbing one in the hopes that it will work...

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speedstep
6 Thallium

Re: Inspiron 3670, PSU upgrade

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It might work.  The CAB359 from Moddiy has been tested and works fine.

Optiplex 3020 9020, Precision T1700, Power Edge T20 also use the same thing.

There is also a guy who made his own adapter from scratch.

https://raphtec.wordpress.com/projects/dell-poweredge-t20-atx-power-supply-adapter/

https://www.moddiy.com/products/Dell-Inspiron-3650-PSU-Main-Power-24%252dPin-to-8%252dPin-Adapter-Ca...

Let us know how it goes.

The other option with a 3670 is the 365W power supply that supports OEM GTX 1060.

When installing an after-market graphics card into a Windows PC with UEFI secure boot enabled, the system may not boot.  This is true for ANY PC not just Dell.

http://nvidia.custhelp.com/app/answers/detail/a_id/3156

The internal parts page shows 290w standard 365w optional.

Full Length GTX 1060 does not physically fit into the case.

But the following Dell OEM full height but short video cards work with Dell OEM 365w PSU =
7VK45 365w, Huntkey
T1M43 365w, Delta

DVP9W Nvidia GeForce GTX 1050 Ti, PCIe, 4GB, DVI-D/DP 1.3/1.4/HDMI 2.0, 75w
36V90 Nvidia GeForce GTX 1060, PCIe, 3GB, DVI-D/3DP/HDMI, 120w
24K8H Nvidia GeForce GTX 1050, PCIe, 2GB, DVI-D/HDMI 2.0/DP 1.3


 

 


Report Unresolved Customer Service Issues
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I do not work for Dell. I too am a user.

The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support






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23 Replies
speedstep
6 Thallium

Re: Inspiron 3670, PSU upgrade

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It might work.  The CAB359 from Moddiy has been tested and works fine.

Optiplex 3020 9020, Precision T1700, Power Edge T20 also use the same thing.

There is also a guy who made his own adapter from scratch.

https://raphtec.wordpress.com/projects/dell-poweredge-t20-atx-power-supply-adapter/

https://www.moddiy.com/products/Dell-Inspiron-3650-PSU-Main-Power-24%252dPin-to-8%252dPin-Adapter-Ca...

Let us know how it goes.

The other option with a 3670 is the 365W power supply that supports OEM GTX 1060.

When installing an after-market graphics card into a Windows PC with UEFI secure boot enabled, the system may not boot.  This is true for ANY PC not just Dell.

http://nvidia.custhelp.com/app/answers/detail/a_id/3156

The internal parts page shows 290w standard 365w optional.

Full Length GTX 1060 does not physically fit into the case.

But the following Dell OEM full height but short video cards work with Dell OEM 365w PSU =
7VK45 365w, Huntkey
T1M43 365w, Delta

DVP9W Nvidia GeForce GTX 1050 Ti, PCIe, 4GB, DVI-D/DP 1.3/1.4/HDMI 2.0, 75w
36V90 Nvidia GeForce GTX 1060, PCIe, 3GB, DVI-D/3DP/HDMI, 120w
24K8H Nvidia GeForce GTX 1050, PCIe, 2GB, DVI-D/HDMI 2.0/DP 1.3


 

 


Report Unresolved Customer Service Issues
here

I do not work for Dell. I too am a user.

The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support






Get Support on Twitter @DellCaresPro

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Rob6991
1 Copper

Re: Inspiron 3670, PSU upgrade

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Hi, I'm in the same position, trying to use my GTX 970, but can't power it. Did that cable work? Another issue is the card can fit (barely), but the 8 pin connector on the mobo is right under the video card, and am unsure if the card is fully seated in the slot, so a low profile connector, or perhaps a right angle connector might help out. Did you have this issue?

Thanks!

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Ender3D
1 Nickel

Re: Inspiron 3670, PSU upgrade

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Sorry for the late reply update guys.

The cable adapter I posted in my original post worked fine.

I haven't gotten around to buying a video card yet, so I can't comment on this.  I'm planning on buying a short single fan model though to keep it as compact as possible to avoid any issues with fitment.

This is the power supply I went with:
https://www.amazon.com/gp/product/B01B72W0A2/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

I did have to hack out a bit of the back of the case though to allow he power cord connect to clear and fit. I guess I should have paid more attention to what I was getting.  Oh well...

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Ozzie45
1 Copper

Re: Inspiron 3670, PSU upgrade

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Hello Ender3D,

I'm looking to upgrade the PSU myself. I noticed the Dell OEM PSU has the fan facing directly to the rear (plug side) and the new PSU, including the Corsair 550 watt you installed has the fan facing the side. It appears that after it is placed in the case and installed, the fan will be facing to a flat side of the case (no vents). If this is the case with your install, have you noticed any more noise or heat issues? Just curious how your install is working out.  

Thanks

 

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lancorp
2 Iron

Re: Inspiron 3670, PSU upgrade

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@Ozzie45 wrote:

Hello Ender3D,

I'm looking to upgrade the PSU myself. I noticed the Dell OEM PSU has the fan facing directly to the rear (plug side) and the new PSU, including the Corsair 550 watt you installed has the fan facing the side. It appears that after it is placed in the case and installed, the fan will be facing to a flat side of the case (no vents). If this is the case with your install, have you noticed any more noise or heat issues? Just curious how your install is working out.  

Thanks

 


I'm trying to do the same thing to my i3670 DT, and also realized, after buying a EVGA 600W PS, that the fan in the PS faces the case bottom, and there are no other venting so I would think the PS might overheat.

Also, the EVGA PS AC input did not quite line up with the cut-out on the back of the case.  

I did buy one of the 24-pin to 8-pin Dell PS adapters, but have not been able to try it since I haven't found a PS that fits.

What did you wind up doing?

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Dell-irios
1 Nickel

Re: Inspiron 3670, PSU upgrade

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A little notch on back by recptical, an cut a vent into bottom plus adapter shown above  you can do it by repining an adding 12v. I tried this after looking up the moddiy  an i did have machine running. only reason i used other adapter cause I already bought it plus it was a rats nest after i got it going  692C8BF0-3806-4AA6-BB3F-6854F32126DD.jpeg

 

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Dell-irios
1 Nickel

Re: Inspiron 3670, PSU upgrade

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235ECAF3-3D38-42AB-8874-805B1170D258.jpeg

  If your curious what it is. If I remember correctly its some sort of usb converter. 

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buddymonster
1 Copper

Re: Inspiron 3670, PSU upgrade

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 the PSU fan mounted facing down?

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Dell-irios
1 Nickel

Re: Inspiron 3670, PSU upgrade

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Yes fan is facing down. Had to notch out right around the plug not very much maybe 1/8 inch. Also cut an made vent at the bottom under the fan for ventilation. 

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