GTX 1050 TI IN optiplex 790 mt

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Almost all Optiplexes have a 95W CPU limit, and only a few expansion slots and bays.
The PSUs are quality parts and are sized to power all the bays and slots that are there with the CPUs that are offered. A GTX1050 shouldn't be a problem. I'm running a GTX1050Ti in an Opti 380 with the Dell PSU.
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Lutfij

Lutfij

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Oct 7, 2009
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You could actually drop in an aftermarket 450W PSU in order to power that GTX1050Ti. I would however suggest that you make sure you're on the latest BIOS update. Is it also possible to borrow a GTX1050Ti from a neighbor or your friend? I ask since some prebuilt system's without a compatible UEFI BIOS environment will only give you a black screen. If your BIOS is UEFI, that should not hold you back for a GTX1000 series GPU upgrade.
 
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feelinfroggy777

feelinfroggy777

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Dec 13, 2016
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Nvidia recommends a minimum of a 300 watt PSU, so you will be running under the recommended specs. Additionally the PSU in the OptiPlex systems are not really designed for gaming workloads. They are pretty cheap power supplies.

With that being said, the 1050ti should only pull 75 watts, so it will probably work, but when spikes in wattage occurs, there may be an issue.
 
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King_V

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Nov 1, 2014
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It should be doable. If this label is correct:

http://www.stuartconnections.com/5802-11463-thickbox/Dell-OptiPlex-790-990-Mini-Tower-MT-265-Watt-Power-Supply-PSU-GVY79-H265AM00.jpg

then, you have 240W available on the 12v rails total (the combined total of 12VA and 12VB is more than the power supply's total rating, which seems weird to me, but then below it it says "+12VA and +12VB not to exceed 240W"

Even assuming a 95W CPU, combined with the 1050Ti, that would be 170W, leaving about another 70 for RAM, disks, fans, motherboard, etc. if everything was simultaneously running flat out.

I want to tentatively say it should be doable. If you have, say, a CPU that consumes less power than my assumption, then you have more of a margin.

If this is your primary PC, though, and not something you can gamble on, it might be worthwhile to upgrade the PSU.

What CPU do you have in your system?
 
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body.mostafa19

Aug 8, 2018
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hey dude first sorry for the down thing this is my first time using this site second i am only able to afford the gtx 1050 ti so i have to work with what i got and no i don't know anyone with gtx 1050 ti
 
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body.mostafa19

Aug 8, 2018
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an i7-2600 and in the manual it says the psu is 265
 
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body.mostafa19

Aug 8, 2018
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what is " spikes in wattage" ?
 
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King_V

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Well, that's definitely a 95w cpu. The i3 and Pentiums consumed less power, but i5 and i7 CPUs of that era were 95W.

That said: this guy did it with a 1050 (rated at the same power draw as the 1050Ti), but with a Small Form Factor optiplex 790, which has a slightly less powerful PSU.

https://www.reddit.com/r/buildapc/comments/72lrdd/optiplex_sff_790_10501050ti_lp_works/

And, here's a guy who did two videos of gaming testing on his Optiplex 790 MT with a 1050Ti.

https://www.youtube.com/watch?v=pVrdkDXA_FA

https://www.youtube.com/watch?v=Jnfiz_ur1xo


I'd still be slightly hesitant myself - but it works. I imagine the lifespan of the PSU may be shorter than otherwise, as you are running somewhat close to its limits, but it looks like, at least for the short term, you can get away with it using the original PSU.
 
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feelinfroggy777

feelinfroggy777

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A component does not pull a static amount of watts. It will fluctuate up and down. There will be peaks for all of your components. If they peak at the same time, then it could overload the PSU.
 
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william p

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Sep 22, 2010
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Almost all Optiplexes have a 95W CPU limit, and only a few expansion slots and bays.
The PSUs are quality parts and are sized to power all the bays and slots that are there with the CPUs that are offered. A GTX1050 shouldn't be a problem. I'm running a GTX1050Ti in an Opti 380 with the Dell PSU.
 
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