Dell OptiPlex 790 MT Power Suppy & Motherboard Upgrade

Harris Boy · Jul 6, 2014

Hi,

I have Dell OptiPlex 790 MT (Mini Tower). It only has power supply of 265 watts. Also its PCI x16 slot on motherboard is limited to draw only 35 watts max from power supply. I am gamer and I want a system for gaming. I want to change its motherboard and power supply so I can install good graphic card for playing games. My system has Intel Core i5 2500 (not k version) processor . So I have few question regarding to my upgrade. I will be really thankful to you if you can help me.

My questions are:

a) Can anyone tell me the form factor of stock motherboard in this system? And also of which form factor motherboard I can install in it? (Actually I want to install this (GIGABYTE GA-H61M-DS2) motherboard. Here is its link: http://www.gigabyte.pk/products/product-page.aspx?pid=3970#ov

b) I also want to change stock power supply but I don't know its factor (Dimensions) too. Can someone tell me the dimensions of stock power supply in this system and also it will be great if you suggest any power supply that can fit inside it?

Here is my mini tower inside view: http://tinyurl.com/naxpcft

I will be really thankful to you if you can help me, I will wait for your help

C12Friedman · Jul 6, 2014

The GIGABYTE GA-H61M-DS2 is a µ-ATX board so it will fit your chassis - the stock motherboard is µ-ATX. The PSU is a standard ATX size so I would suggest something like the XFX TS 550 as an option which should be adequate for any single graphics card configuration

Harris Boy · Jul 7, 2014

C12Friedman :

Thank you very much friend for replying me quickly. I measured PSU dimension and its 86mm high, 140mm long and 150mm wide. I have core i5 2500 (not k version) and I want to install a Radeon HD 7770 or maybe GTX 650 Ti. So can you suggest me PSU according to this?

tiny voices · Jul 7, 2014

YOu have no need to change the motherboard.

Just get a 450-500w Antec, XFX, Seasonic PSU and the GPU.

Both of the GPUs you are looking at are a generation old. Look at the r7 260x and the gtx750ti. Both are much better.

Harris Boy · Jul 8, 2014

tiny voices :

Actually the problem is that the stock PSU is only of 265 watts and the stock motherboard can't draw more than 35 watts max from PSU in PCI x16 slot. That's my real problem. As good cards need power (more than 35 watts) and also more than 265 watts PSU is needed. Although I just have one 320 GB SATA 2 Hard drive and I just wanna buy a good graphic card...

C12Friedman · Jul 8, 2014

The XFX unit I linked above is a good option for a PSU, you could run a GTX 750Ti with your current PSU though (it only pulls about 65W). The mobo, that 35W PCIe lane limit is a major issue though, I find it puzzling but yeah, you'll need to get a new motherboard (and operating system, your current OS is tied to the motherboard)

davidnatoir · Feb 28, 2018

Harris Boy :

Hi,

I have Dell OptiPlex 790 MT (Mini Tower). It only has power supply of 265 watts. Also its PCI x16 slot on motherboard is limited to draw only 35 watts max from power supply. I am gamer and I want a system for gaming. I want to change its motherboard and power supply so I can install good graphic card for playing games. My system has Intel Core i5 2500 (not k version) processor . So I have few question regarding to my upgrade. I will be really thankful to you if you can help me.

My questions are:

a) Can anyone tell me the form factor of stock motherboard in this system? And also of which form factor motherboard I can install in it? (Actually I want to install this (GIGABYTE GA-H61M-DS2) motherboard. Here is its link: http://www.gigabyte.pk/products/product-page.aspx?pid=3970#ov

b) I also want to change stock power supply but I don't know its factor (Dimensions) too. Can someone tell me the dimensions of stock power supply in this system and also it will be great if you suggest any power supply that can fit inside it?

Here is my mini tower inside view: http://tinyurl.com/naxpcft

I will be really thankful to you if you can help me, I will wait for your help

davidnatoir · Feb 28, 2018

Harris Boy :

Hi,

I have Dell OptiPlex 790 MT (Mini Tower). It only has power supply of 265 watts. Also its PCI x16 slot on motherboard is limited to draw only 35 watts max from power supply. I am gamer and I want a system for gaming. I want to change its motherboard and power supply so I can install good graphic card for playing games. My system has Intel Core i5 2500 (not k version) processor . So I have few question regarding to my upgrade. I will be really thankful to you if you can help me.

My questions are:

a) Can anyone tell me the form factor of stock motherboard in this system? And also of which form factor motherboard I can install in it? (Actually I want to install this (GIGABYTE GA-H61M-DS2) motherboard. Here is its link: http://www.gigabyte.pk/products/product-page.aspx?pid=3970#ov

b) I also want to change stock power supply but I don't know its factor (Dimensions) too. Can someone tell me the dimensions of stock power supply in this system and also it will be great if you suggest any power supply that can fit inside it?

Here is my mini tower inside view: http://tinyurl.com/naxpcft

I will be really thankful to you if you can help me, I will wait for your help

Cant you use a ZOTAC GeForce GT 730 Zone Edition it draws 25 watt

Harris Boy · Mar 9, 2018

davidnatoir :

Harris Boy :

Cant you use a ZOTAC GeForce GT 730 Zone Edition it draws 25 watt

I already sold it now built custom PC with i5 2500 and GTX 970.
But thank you so much man for taking your time and replying me. Appreciate it!

Search

Dell OptiPlex 790 MT Power Suppy & Motherboard Upgrade

Harris Boy

Reputable

tiny voices

C12Friedman

Glorious

Harris Boy

Reputable

tiny voices

Titan

Harris Boy

Reputable

C12Friedman

Glorious

davidnatoir

davidnatoir

Harris Boy

Reputable

TRENDING THREADS

Latest posts

Moderators online

Share this page