CPU+ Mobo: ASROCK H81M-HDS + i3 4160 (230)
RAM: G.SKILL/KINGSTON PC 12800/1600MHZ DDR3 CL11 VALUE RAM (8GB) (100)
GPU: SAPPHIRE R9 280 3GB DUAL-X (285) (lazada.com)
HDD: TOSHIBA 1TB 7200RPM (69)
DVD-RW: LG 24X DVD-RW SATA OEM (25)
PSU: SUPERFLOWER HX 600M (99)
Case: DEEPCOOL TESSERACT (65)
OS: WINDOWS 8 HOME PREM (138)
Total cost: $1011
Unless otherwise stated, buy at PC Themes, #04-15, and ask for discounts. DIY yourself. If you can't into DIY, get PC Themes to assemble for you for a fee.
Notes:
1) Due to severe lack of budget, this rig comes with an i3 4160 and no SSD. If you are unable to spare another $60 for this rig, get a Zotac GTX 660 Synergy Edition for $189 instead. The GTX 660 is likely to be able to play Battlefield 4 at Medium settings in 1080p only though.
2) This rig should be capable of playing Battlefield 4 at High settings in 1080p.
3) Got Mastercard? Consider buying the GPU and case from lazada.com on a Monday and get 10% discounts when you pay with a Mastercard.