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Upgrading Dell Optiplex 745 mini tower PSU

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August 19, 2013 11:06:09 AM

Will this
http://www.bestbuy.com/site/EVGA+-+500+Bronze+500W+Powe...

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+GD...

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?

Best solution

a c 1167 ) Power supply
a c 540 U Graphics card
August 19, 2013 11:54:24 AM

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.
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August 19, 2013 1:30:13 PM

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+AT...

Would this be a good choice as well?

Which of these two would be the better choice?
also will this one fit?
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a c 1167 ) Power supply
a c 540 U Graphics card
August 19, 2013 2:02:58 PM

GannicusZX said:
I was also considering this as my PSU

http://www.bestbuy.com/site/Dynex%26%23153%3B+-+520W+AT...

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.
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