lOOKS like I'm going with this build. It's cheaper and it meets or exceeds the BF4 recommended specs which just came out today.
The following are the minimum system requirements to be able to run Battlefield 4:
OS: Windows Vista SP2 32-bit
Processor (AMD): Athlon X2 2.8 GHz
Processor (Intel): Core 2 Duo 2.4 GHz
Memory: 4 GB
Hard Drive: 30 GB
Graphics card (AMD): AMD Radeon 3870
Graphics card (NVIDIA): Nvidia GeForce 8800 GT
Graphics memory: 512 MB
These are the recommended system requirements for Battlefield 4:
OS: Windows 8 64-bit
Processor (AMD): Six-core CPU
Processor (Intel): Quad-core CPU
Memory: 8 GB
Hard Drive: 30 GB
Graphics card (AMD): AMD Radeon 7870
Graphics card (Nvidia): NVIDIA GeForce GT 660
Graphics memory: 3 GB
Hey LT, I don't think your power supply is big enough

Pretty sure they recommend at least a 600W if you get that video card and I'd probably go with a 650W. I did a quick config on the site that Oce was using and it looks like you need at least 570W
EDIT: The recommended power for that card is minimum of 500W, so 550W might be enough....I did some Internet searches and it sounds like other people have 500W or 550W. I just suggest that you do some digging on your exact setup and the power requirements because it depends on the other components you have (motherboard, CPU, memory, HDD, additional cards). Once you hang some USB devices (ipods and stuff) off of it there will be more power draw too. You just don't want to run out of power because it'll **** you up