Optiplex 7050 mt psu upgrade

Hello, the 7050 mt system board does have an M.2 slot (number 15 in picture) for your storage SSD.

further more,

7050 MT/SFF onboard M.2 supports both sata and nvme ssd

M.2 SATA Solid State Drive
and M.2 PCIe Solid State Drive

the psu upgrade remains a question.  at this point the Dell 360w psu (XE3) upgrade is good for 7050 as it has 6+4 pin, but the 500w psu (for 7080/7090) has a proprietary circuit block because it has 6+4+4 pin (thus one 4 pin has no place to plug into 7050 mobo).  one speculation is that the second 4 pin must detect a load for the psu to work.  there is thought of converting the second 4 pin to a 6 pin PCIe and plug in graphics card to bypass the block, but this has not yet been experimented on or confirmed.

Edit: on further review, the psu with 6+4+4 white pin does NOT work for 7050.  There is a possible work around but it has not yet been validated. A verified Dell solution is not yet found.

redxps630

have you been able to find a solution? I have a bunch of 7050 MTs that I need to put in higher end video cards to do some work.  And they required the direct power of 6+6 connections.

thanks

--sb

There’s the rub.  After 7020/9020 Dell optiplex motherboard has become proprietary in form factor. It is not any standard.  It is odd shaped non rectangular. You cannot install it in any standard case without losing front IO port.  
do not know for sure whether the oem board mounting holes follow microATX standard.  I think some of the holes may be c/w standard.  See comparison below bth 7050 and 7020.
If you are willing to experiment and give up front IO you can give it a try to move the board to a standard case.7050mt

Or is there a good power adapter to put the 7050 internals in a standard pc case with standard psu?

--sb

at this point for high power psu you can use non-Dell SFX psu from silverstone etc. plus a 24-to-6 pin adapter from Amazon.

7050 MT dimensions Width: 6.1" (15.4cm)  Depth 10.8" (27.4cm) Height 13.8" (35 cm)

SilverStone Technology 500W SFX-L Form Factor 80 PLUS GOLD Full Modular Lengthened Power Supply with +12V single rail, Active PFC (SX500-LG)

However there is another issue in 7050 MT which uses a clam shell hdd cage.  It will get in the way of a 125 mm wide psu (Dell psu is only 85 mm wide).  To install SFX psu user will likely need to remove the 2.5” hdd cage.

this would involve some force to remove the cage riveted to chassis.  to save you from this trouble, you can get a non-Dell TFX psu such as Silverstone TX500 gold.

85mm (W) x 65mm (H) x 175mm (D) 

non-Dell SFX psu has to be no more than 65 mm tall to fit between chassis floor and motherboard.  Dell stock psu is 65 mm tall.

@redxps630Do you think this one would fit and work instead? It looks to be the same in size and specs.

https://www.bequiet.com/en/powersupply/1556

For anyone else like me who only read the first few posts and grabbed a 500 watt power supply from a 7080+, it can be made to work if you're ok with some modification.  

Context:  These power supplies are fairly simple.  They appear to only output +12v.  The Motherboard produces the +5v and +3.3v for the external drives.  The six pin MB connector has 2x +12v lines, 2x ground lines, a "PS on" signal and a "PS Ok" signal.  To turn on and boot when operating normally the MB grounds the "PS on" signal to tell the power supply to power on.  The power supply should then provide ~+5v on the "PS Ok" line back to the motherboard.  This essentially tells the system to begin the boot process.  https://en.wikipedia.org/wiki/Power_good_signal

For whatever reason, the newer power supplies DON'T send the +5v PS Ok signal when connected to the older systems even though +12v is ready to go.  I tried various loading of the CPU and GPU connectors as well as different resistances across the PS on and ground lines with no success.  Finally I started looking into how to create the +5v PS Ok signal myself.  The simplest way to do this is a voltage divider circuit but there are also dedicated power monitor ICs and voltage regulators that will do the job.  My solution used a 22k resistor from the PS Ok pin to ground and a 24k - 30k resistor from the PS Ok pin to +12v.  This should give you a voltage between +4.8v and +5.2v.  I have had this working for a few days now with a GTX 1660 ti and have no issues.  

Re: https://www.bequiet.com/en/powersupply/1556

It is 130x125x64 mm.  Dell stock psu is 65 mm tall.  
If you want to use it in 7050 MT you need to remove the 2.5” hdd cage first.

if you want to use it in 7080 MT yes it will fit although psu mounting holes don’t match Dell case.  User reported 24 pin psu does not turn off when you shut down pc.  You have to manually turn off psu too.

---

@redxps630 wrote:

Re: https://www.bequiet.com/en/powersupply/1556

User reported 24 pin psu does not turn off when you shut down pc.  You have to manually turn off psu too.

---

I can confirm this part.  The 24 pin -> 6 pin adapter cables essentially tell the power supply to power on as soon as AC is connected.  This mimics the Dell power supplies.  The motherboard then powers on and off on its own.

Okay quick question. I need info on the highest performance graphics card that will 1:  fit in the case of the 7050mt and 2: doesn’t need external power, doesn’t overload the psu and is not bottlenecked by the i7 7700

Hi, I was struggling with the same issue, upgrading the PSU from my 7050 MT so I could fit a RTX 3060. Did some testing with a small 24 pin Corsair PSU and a 6 pin adapter but I didn’t work. I got desperate and ordered this one from Ali https://nl.aliexpress.com/item/4000811511094.html

After a few weeks it arrived and it looked genuine Dell, I installed it and to my surprise it works fine also with the RTX 3060 (Phoenix) installed. I was curious about the actual power used by the system. To my surprise it never used more then 280Watt when running 3Dmark of did some heavy gaming. (ultrawide Quad HD 3440 x 1440) Which is consistent when looking and actual powerusage from a 3060 looking at Toms Hardware who did some tests

So I’m happy it works, OK I paid a bit too much. There is one issue which I’m not so happy about, when turned off it still uses 22 Watt of power, so unplugging could save you some money.

MODEL H500EPM-00

UP/N: D500E005P

Dell P/N: Y7R0X

Hey there, I just found this thread after looking up the topic today. I have an Optiplex 7050 MT too, and have been using it with the following power supply:

I bought this PSU off Ebay some time ago, and it has been working like a charm with an i7 7700, 32GB DDR4 and RX 570 4GB in my Optiplex. I am going to be needing a more powerful gpu further down the line though and since most of the more powerful gpu cards require an 8-PIN PCIE connector, I am now looking for a more powerful PSU.

Questions:

• Which sellers can be trusted to purchase a high quality psu? Any recommendations?
• Can a PSU upgrade be bought directly from Dell?
• I have also been thinking of purchasing a 24 to 6 PIN adapter from Amazon in order to use it with the Silverstone PSU mentioned on page 3 (or any other alternative for that matter). Can the 24 to 6 PIN adapters be used safely, are there any risks involved in doing so? Not a fan of adapters tbh, so a genuine Dell PSU is preferable
• Is my PSU above authentic? I ask bc I have read about shady sellers etc., just wanna make sure that it's the real thing
• Which PSU would you guys recommend in my case? Anything up to 100 Euros is a-ok

Thanks!

This is a good surprise as I begin to find more example of variable in Dell oem psu of same model and Dell part number. 

• Which sellers can be trusted to purchase a high quality psu? Any recommendations?  I usually look on eBay.  
• Can a PSU upgrade be bought directly from Dell?  Yes.
• I have also been thinking of purchasing a 24 to 6 PIN adapter from Amazon in order to use it with the Silverstone PSU mentioned on page 3 (or any other alternative for that matter). Can the 24 to 6 PIN adapters be used safely, are there any risks involved in doing so? Not a fan of adapters tbh, so a genuine Dell PSU is preferable.  There are some downsides such as air vent holes of SFX psu blocked by chassis and psu not turned off automatically when pc is shut down.  also cable mgmt is bad.
• Is my PSU above authentic? I ask bc I have read about shady sellers etc., just wanna make sure that it's the real thing.  Looks genuine to me.
• Which PSU would you guys recommend in my case? Anything up to 100 Euros is a-ok. Waiting to hear back from the other user confirming it is an uncommon Y7R0X with 6+4 white pin and not 6+4+4 white pin.