Dell Optiplex 790 MT graphics upgrade

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davidnatoir

Feb 28, 2018
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I was wondering if i could install a graphics card that uses 49 watts on my PC ( MSI-GeForce GT-730 4GB), but i heard that the max pci watts are 35? Would it work? Also planing to upgrade later on to a 500 watt power supply?
 
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Barty1884
Then anything with no external PCIe connectors, and a power draw >35W are likely to be unstable under load.

For anything modern, you're looking at a 1050TI with a 6pin, which are minimal.
The only one I know of is:
https://www.newegg.com/Product/Product.aspx?Item=9SIA73M6Y00491&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

If you're going that route, you should be able to find an older gen card, of greater performance that an GT730, for a decent price on the used market.
http://www.tomshardware.com/reviews/gpu-hierarchy,4388.html
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Barty1884

Barty1884

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Apr 16, 2015
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Dell's motherboard(s) of that era actually state the max power available through the PCIe slot right on the board. For example:
25WSLOT.jpg


You'd have to double-check on your board specifically.

There's no guarantee of functionality, nor stability if you use an underpowered slot. One things for sure, even if it'll run, the card will never be stable under load as it's not fully powered.

Replacing the PSU will not change the limitation (if applicable) from the motherboard. A card with external PCIe power, paired with a replacement PSU should work though.

As for the "upgrade" part, which 790 do you have specifically? I believe those can in everything from a full mid-tower, to an ultra SFF rig.

3073.FAMILY.jpg
 
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davidnatoir

Feb 28, 2018
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I got the mini tower.
 
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Barty1884

Barty1884

Retired Moderator
Apr 16, 2015
22,250
1,350
108,740
Then anything with no external PCIe connectors, and a power draw >35W are likely to be unstable under load.

For anything modern, you're looking at a 1050TI with a 6pin, which are minimal.
The only one I know of is:
https://www.newegg.com/Product/Product.aspx?Item=9SIA73M6Y00491&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

If you're going that route, you should be able to find an older gen card, of greater performance that an GT730, for a decent price on the used market.
http://www.tomshardware.com/reviews/gpu-hierarchy,4388.html
 
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