How should I upgrade my PC

[InternalBad]

Machine name: ALANS-PC
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_rtm.090713-1255)
Language: English (Regional Setting: English)
System Manufacturer: HP-Pavilion
System Model: KJ377AA-ABA m8400f
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: AMD Phenom(tm) 9500 Quad-Core Processor (4 CPUs), ~2.2GHz
Memory: 7168MB RAM
Available OS Memory: 7166MB RAM
Page File: 1930MB used, 12400MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7600.16385 64bit Unicode

My current GRAPHICS CARD is an: NVIDIA GeForce 8500 GT

Yes, I know, weak computer but I want to know what upgrades that I should make to play games such as BF4 on Medium-Ultra or Arma III. I am leaning toward a 100-250 budget, 300$ Max. I love hardcore gaming but my budget is low right now

 

[DroneDroneDrone]

R9 270x can run bf4 ultra. 270 is good as well but won't be able to. I don't know if their compatible with your pc though. What mobo and PSU do you have?

 

[i7Baby]

Depends on the capability of your power supply and the room you've got in the case. Often, pre-builts such as HP have trouble on both fronts.

So - go small and low powered eg GTX750Ti. Then check your case and power supply before buying anything.