Question about Dell OptiPlex GX280 PC Desktop

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Updrading power supply of Dell Optiplex GX280 Small Desktop.

My system has 210 Watts power supply which i need to upgrade to 400Watts.Will it effect my computers components? I mean is there any danger that the motherboard or processor might get burnt up? I need that power to run latest PCIe graphic cards which require 300Watts or more!

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I doubt your fans will cope ... especially if you have the small form factor (SFF) case ..

So think about fitting additional / higher speed fans (to blow hot air out of the case) before adding extra power hungry cards ..

Posted on Mar 17, 2009

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Hi there.
No, 400Watts will not affect your computers performance, it just means that you will be able to add more peripheral devices to your PC, for example, an external or internal hard drive or more USB devices.
Make sure you get the power supply from Dell themselves as you will find it difficult to install a standard PSU (power supply unit).

Good luck and thanks for using Fixya!!!

Posted on Mar 01, 2009

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1 Answer

Optiplex replace power supply


Hello Jacey,
Below are the system specs for the power supplies that are installed in each chassis of the GX280 system. You can call the Dell Spare Parts
Department at 1-877-717-3355 or click the link below.

Spare Parts Department

Wattage small form-factor computer: 160 W
small desktop computer: 210 W
small mini-tower computer with processor speeds of 3.2 GHz or lower: 250 W
small mini-tower computer with processor speeds of 3.4 GHz or higher: 305 W Heat dissipation small form-factor computer: 546 BTU/hr
small desktop computer: 717 BTU/hr
small mini-tower computer with processor speeds of 3.2 GHz or lower: 853 BTU/hr
small mini-tower computer with processor speeds of 3.4 GHz or higher: 1041 BTU/hr Voltage fixed-voltage power supply-110 V at 50/60 Hz manual selection and auto-sensing power supplies-90 to 135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz; 100 V at 50/60 Hz for Japanese computers

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Dell Support > Optiplex GX280 Desktop PC > User Manual,

http://support.dell.com/support/edocs/systems/opgx280/en/ug/tindex.htm


I chose the Mini-Tower model because the following information applies to all models;
Small Form Factor (SFF)
Small Desktop
Desktop
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Computer and Software Problems > Troubleshooting Tools and Utilities > System Lights,

http://support.dell.com/support/edocs/systems/opgx280/en/ug/tools02.htm#wp1114432

Now scroll down. What do the Diagnostic Lights indicate?
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Oct 09, 2012 | Dell OptiPlex GX280 PC Desktop

1 Answer

I want to upgrade my power supply for the dell gx280 small desktop


Sorry to say that a 260w PSU is the largest PSU you will get for this system as that is all the M/B is safely rated to any higher than that and it may cause a fire or worse. I run a Dell GX270 and this is maxed out on a 260w PSU. This system will only be upgradeable to these specs :

3.2Ghz CPU ( Note they must match existing letters on CPU.
3Gb Ram under XP, 4 Gb under Vista or Win 7. ( Note win 7 will run very slowly )
256Mb PCI Card or 512Mb AGP (4X or 8X )
500Gb IDE or SATA HDD
DVD Burner max ( Blu-Ray will not work as it is too advanced ).

Even the tower model of these systems only have a 260w PSU max due to limited power rating for the M/B. Tower PSU is able to be swapped out just like any other tower but the fact remains that the M/B is only rated to 260w and if you use a larger PSU it may cause a fire or worse. I hope this helps.

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You listed GX820 and GX260.

I am assuming you meant the GX260.

There are three varieties of the Gx260.

1) The SFF (Small Form Factor) power supplies can be replaced, but I know of no upgrades for these.

2) For the SDT (Small Desk Top), you can get up to a 270 (best I have seen).

Example of where to get one.
http://www.atxpowersupplies.com/180-watt-dell-power-supply-1n405.php?psu=1N405-GX260SmallDesktop


For the Mini Tower, here is an example of a 400W replacement. There may be others for this model.
http://www.cputopia.com/dell-400w-dell-optiplex-gx260.html

I have a GX280 Mini Tower and recently upgraded my PSU to one very similar to the one above.

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you can insert better than 250Watts also sir.Because it will be helped in the future also.you can upgrade any new devices also in later.so you may purchase what will be availability in market more than 250 Watts. Thank you sir... Have a Nice Day...

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Hi,
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Click this link for more information.

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1 Answer

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eykraus,
I have some experience in upgrading your Dell.
If this gx280 was my computer and want to upgrade I'll only go to 3.0 but you need to upgrade you bios to support the new upgrade. You could also upgrade the memory as well. Put the power supply you have in so you can conserve.

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You hit that one right on the dot.  ATI website showed the specs for that graphics card you installed as needing a 300 Watt power supply.  Good news though... I researched newegg.com and I believe I found your 300W power supply.  There are 4 different Optiplex gx280 designs with 4 completely different power supplies.  Since you bought the low-profile video card, I believe you have the slim computer case and this power supply should work for you...
http://www.newegg.com/Product/Product.aspx?Item=N82E16817374002

Good Luck

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So if this is a slimline pc you are kind of limited in upgrade options
space being the biggest , then being followed with cooling ability, the best advice I can give you if specs say 350 is needed i wouldn't chance having the card pull more of a load off of the PSU than what is rated for it. Hope this helps

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