My computer that played BF2 just fine was not up to par with the requirements for BF4.
This set up played BF4 but only gave me 15-20 frames on super low settings after overclocking my video card.
I added 2 GB of DDR2 ram to make a total of 8GB RAM
I also swapped out the card with a PNY GTX 750 2GB ($96 SHIPPED)
After adding these components to the computer I get 55-60 frames with everything on LOW @ 41 Celsius and 35-38 on Medium @ 48 Celsius. STOCK
Motherboard: EVGA 780i SLI
CPU: E8400 Dual Core 3.0Ghz
RAM: 6GB DDR2-PC2-6400 (800Mhz)
Video Card: Fermi PNY GT 430
Power Supply: Antec 750W
Case: Senty Full tower with 8-10 fans