Solved

Upgrading Dell Optiplex 745 mini tower PSU

Will this
http://www.bestbuy.com/site/EVGA+-+500+Bronze+500W+Power+Supply+-+Black/1017256.p?id=1219045510716&skuId=1017256

Fit in the Dell Optiplex 745 Mini Tower?
Also, is this a good choice for a PSU?

This is my Graphics card I purchased:
http://www.bestbuy.com/site/XLR8+GeForce+GTX+650+2GB+GDDR5+PCI+Express+3.0+Graphics+Card/6820159.p?id=1218808243147&skuId=6820159&st=geforce%20gtx%20650&cp=1&lp=4

I do not want to buy a new case, I just want to upgrade the PSU for now. If this PSU will not fit, what PSU would you recommend?
3 answers Last reply Best Answer
More about upgrading dell optiplex 745 mini tower psu
  1. Best answer
    For a system using a single GeForce GTX 650 graphics card NVIDIA specifies a minimum of a 400 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 20 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.

    Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

    The EVGA 500 BRONZE 500W (100-B1-0500-KR) power supply unit, with its maximum combined +12 Volt continuous current rating of 40 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with a single GeForce GTX 650 graphics card.

    This PSU should physically fit into the Dell Optiplex 745 Mini Tower.
  2. ko888 said:
    For a system using a single GeForce GTX 650 graphics card NVIDIA specifies a minimum of a 400 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 20 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.

    Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

    The EVGA 500 BRONZE 500W (100-B1-0500-KR) power supply unit, with its maximum combined +12 Volt continuous current rating of 40 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with a single GeForce GTX 650 graphics card.

    This PSU should physically fit into the Dell Optiplex 745 Mini Tower.



    I was also considering this as my PSU

    http://www.bestbuy.com/site/Dynex%26%23153%3B+-+520W+ATX+CPU+Power+Supply/2658156.p?skuId=2658156&id=1218342638023#tab=overview

    Would this be a good choice as well?

    Which of these two would be the better choice?
    also will this one fit?
  3. GannicusZX said:
    I was also considering this as my PSU

    http://www.bestbuy.com/site/Dynex%26%23153%3B+-+520W+ATX+CPU+Power+Supply/2658156.p?skuId=2658156&id=1218342638023#tab=overview

    Would this be a good choice as well?

    Which of these two would be the better choice?
    also will this one fit?


    That Dynex 520W (DX-520WPS) is only 520 Watts peak power. Its maximum continuous rating is only 420 Watts. The OEM is SHENZHEN HUNTKEY ELECTRIC CO LTD.

    Its maximum combined +12 Volt continuous current rating should be at least 27 Amps.

    The EVGA 500 BRONZE 500W (100-B1-0500-KR) is definitely the better of the two.
Ask a new question

Read More

Power Supplies Optiplex Graphics Cards Dell Components