Dell Optiplex 990 PSU and gt730

Blakeando10 · Jun 7, 2017

i want to put a GT730 into my dell optiplex 990 but the PSU is only 250 W and the GT730 is recommended to have 300W The Dell is also a small form factor pc (DT) so im not sure which psu to buy if i need to upgrade

RobCrezz · Jun 7, 2017

I would go for the 1030 instead, should be fine on a 300w psu.

King_V · Jun 7, 2017

I think you should be fine. If the CPU isn't incredibly high end, it's safe. There's one version of the GT730 that, according to the GeForce website, has a TDP of 49W, and the others have about 25W.

http://www.geforce.com/hardware/desktop-gpus/geforce-gt-730/specifications

Their 300W recommendation is assuming you have a high-end CPU, possibly multiple hard drives, etc.

I've been running an R7 250E (55W TDP) on a Dell Inspiron Slim Desktop equipped with a Haswell Pentium CPU (54W) with only a 220W power supply trouble free for nearly two years. I am cutting it somewhat close, but the 12V rail can provide up to 214 W.

I also have the same issue where the power supply is some weird shape to fit this particular case, so upgrading the PSU was probably out of the question.

Blakeando10 · Jun 7, 2017

King_V :

I think you should be fine. If the CPU isn't incredibly high end, it's safe. There's one version of the GT730 that, according to the GeForce website, has a TDP of 49W, and the others have about 25W.

http://www.geforce.com/hardware/desktop-gpus/geforce-gt-730/specifications

Their 300W recommendation is assuming you have a high-end CPU, possibly multiple hard drives, etc.

I've been running an R7 250E (55W TDP) on a Dell Inspiron Slim Desktop equipped with a Haswell Pentium CPU (54W) with only a 220W power supply trouble free for nearly two years. I am cutting it somewhat close, but the 12V rail can provide up to 214 W.

I also have the same issue where the power supply is some weird shape to fit this particular case, so upgrading the PSU was probably out of the question.

the cpu is an Intel core i7 2600

King_V · Jun 7, 2017

Blakeando10 :

So, your CPU requires 41 watts more than mine, but your GPU, depending on which variant you have, demands either 6W less (thus total system 35W more than mine based just on CPU/GPU) or 30W less (thus total system 11W more than mine based just on CPU/GPU) .

If you've got one of the lower power draw GT730 cards, you're definitely safe. If you've got the one that 128-bit DDR3, well, you've got 30 extra watts of power supply, but it's still cutting it close. Still, some would argue that you're not typically running everything on the motherboard AND the processor AND the graphics card AND the memory AND the hard drive AND the optical drive, etc. at their maximum limits simultaneously.

That said, it might help to get the ratings for the 12V rail(s) to be sure, and to be certain as to which variant of the GT730 you have.

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Dell Optiplex 990 PSU and gt730

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