Question I dont know what i can upgrade my graphics

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dell optiplex 790 core i5 computer package monitor
a few upgraded specs from that model, but I and looking into getting a better graphics card, for some "light" gaming, like old FF games or sharing my sons gamepass for xboxwith the throwback games. League of Legends also runs rather choppy.

 

[DSzymborski]

Would need far more details about the specs of the PC, including the exact power supply, and given the model, what form factor you have. Also what your budget is.

 

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i dont exactly know how to find that out :/

 

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Operating System: Windows 10 Home 64-bit (10.0, Build 18363) (18362.19h1_release.190318-1202)
Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
System Model: OptiPlex 790
BIOS: Default System BIOS (type: BIOS)
Processor: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz (4 CPUs), ~3.1GHz
Memory: 16384MB RAM
Available OS Memory: 16266MB RAM
Page File: 53347MB used, 7865MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 12
DX Setup Parameters: Not found
User DPI Setting: 96 DPI (100 percent)
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
Miracast: Not Available
Microsoft Graphics Hybrid: Not Supported
DirectX Database Version: Unknown
DxDiag Version: 10.00.18362.0387 64bit Unicode

Will this help?
if is able to suport maybe 75-100 budget
whats a form factor?

 

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this is my power supply, what other info do i need?

dell 02txym

 

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dell 02txym
i dont know any other info that may be needed please let me know