Upgrading Graphics card and Power supply in Dell vostro 460 mini tower

Other Dells have had BIOS issues with GeForce 900/TitanX Series  cards so it might not even post. Corsair GS series is not sufficient.

You need and EPS12V certified unit.

Corsair CS750M is minimum recommended.  Dells need 150W on the 5v/3.3v rails,  20W on the +5vsb, and 450W on a single 12v Rail.

DELL's 305W and 525W power supply Guarantee 150W on the 3.3v and 5v Rails. But also again Rates the 5VFP/5VSP at 20W. Dell demands Beefy 3.3v and 5v and 5vsb rails and then the 12v.

This is why I recommend an EPS12v  Corsair CS750M

Ok no problem i will buy that psu but will it fit in my mini tower and i m not able to get you properly regarding bios issues with gtx 9xx series cards.u r saying that Gtx 9xx would not work on my pc

My current psu is stock dell 350W unit

Here is the image of my current psu

Plug in No post No nothing OR  Plug in Post , Install Drivers, Reboot,  Nothing Black Screen.There is a 6792 post thread on them not working in XPS 8700's. Any Standard EPS12v Power supply like the corsair CS750M will fit in your case.

You can test the not working theory by calling up a vendor that sells the 900 series cards and tell them you have a vostro 460 and that when you install the driver and reboot its a black screen.

Then tell them you want an RMA for a non working card and see how they dance around not giving you your money back.

The EPS12V spec 2.92 guarantees 170w combined on the 5V/3.3V rails and 20W on the 5VSB as well as 45 amps on a Single 12V rail.

http://www.microcenter.com/product/425477/CS_Series_CS750M_750_Watt_ATX_Modular_Power_Supply

http://www.amazon.com/Corsair-Series-Modular-Efficient-CS750M/dp/B00GH9NA0A

http://www.corsair.com/en-us/cs-series-modular-cs750m-750-watt-80-plus-gold-certified-psu

Corsair CS Series 750 Watt ATX Modular and Efficient Power Supply CS750M is a suitable brand I find on Amazon and in Microcenter.

Which video card you recommend me for high quality gaming

These issues didn't show up until the 900 series.

EVGA 02G-P4-3753-KR G-SYNC Support GeForce GTX 750 Ti Superclocked 2GB 128-Bit GDDR5 PCI Express 3.0 Video Card is lowest I would recommend.  I have no idea what the Case allows for your model. 

http://www.newegg.com/Product/Product.aspx?Item=N82E16814487024

How about gtx 760 or maybe gtx 770

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hello i have a 460 aswell and i tried to upgrade my graphics card but it just goes blank and does not want to display anything its a asus ams raedeon r7 250 1gb ddr5

everything else is stock please help