Dell Optiplex 755 SFF PSU Replacement

[Chris Law]

My computer, as detailed by dell support

I've read many different things, and now I'm confused. I wish to put an NVIDIA GT710 2gb in my PC, but it requires a higher PSU, I currently have the stock SFF for the 755 in there.

I don't mind if it doesn't fit, but that would be an added bonus. I usually have the lid off for improved airflow as I got it second hand, so things like the fan and stuff have been removed already. All I'm looking for is some clarification. Am I able to get a new PSU? Will the motherboard be compatible?

This is the PSU I'm looking at getting.

Thanks for the support, looking forward to hearing from anyone.

 

[R_1]

the motherboard will work with a standard power supply. the motherboard has a 24 pin connector, not a proprietary plug so good there.
it will not fit inside the Case but you know that.
I would suggest this power supply over the coolermaster unit. 10 bucks more but worth it IMHO
https://www.umart.com.au/newsite/goods.php?id=24574
or if you feel you need more power this one
https://www.umart.com.au/newsite/goods.php?id=23845

there is every chance the PSU you have will work with the card. that card has a low draw.

 

[Chris Law]

the motherboard will work with a standard power supply. the motherboard has a 24 pin connector, not a proprietary plug so good there.
it will not fit inside the Case but you know that.
I would suggest this power supply over the coolermaster unit. 10 bucks more but worth it IMHO
https://www.umart.com.au/newsite/goods.php?id=24574
or if you feel you need more power this one
https://www.umart.com.au/newsite/goods.php?id=23845

there is every chance the PSU you have will work with the card. that card has a low draw.

For some reason, when I put the card in, the sound goes all crackily and the computer runs VERY slow. This is only when that card is in, so the low power is what I'm assuming is the issue. If you have any other ideas, I'm all ears.

 

[R_1]

usually if the system is starved for power it will reboot/fail to boot.
are the old GPU drivers removed and new ones installed?

 

[Chris Law]

usually if the system is starved for power it will reboot/fail to boot.
are the old GPU drivers removed and new ones installed?

They were. I reverted back to my old card. Those drivers are completely gone, from what I can see.

The card that I have no also starves the PC for power. It reboots 3 times, then after the 3rd time its a successful boot but theres no video source from the card. I usually have to pull out the RAM (6gb ddr2) from dimm 1-3, boot, shutdown, go one by one, then for some reason it boots.

 

[william p]

Look at your MB next to the PCIe slot and see if it syas 35W, or 25W there. Normal is 65W but there was a lower rating for "servers" that they snuck in there sometimes.