Intel Core Duo i3-3220 boxed CPU (LGA1155/3.3GHz/3M L3 cache/55W/22nm)￥759.00

Asrock B75M- GL R2.0 motherboard (Intel B75/LGA 1155) ￥399.00

MSI 7850 hawk 980/4800MHz 1GB/256bit GDDR5 PCI-E ￥999.00

G.SKILL(G.SKILL) DDR3 1600 4G desktop memory (F3-1600C11S-4GNT)￥239.00

Western Digital (WD) blue disk 1TB SATA6Gb/s 7200 rpm 64M desktop hard drive (WD10EZEX)￥409.00

SAMA Miracle 3 mid-tower chassis (front USB3.0/all black/iron mesh dustproof/support SSD) black ￥99.00

Antec VP 350P power supply ( Rated 350W, 120mm silent fan, active PFC, black exterior design) ￥209.00

Acer P239HL Abd 23-inch LED backlight IPS widescreen LCD monitor ￥799.00

Total price: ￥3912.00

For games like Battlefield 3, the role of the graphics card is much higher than that of the CPU, so you can’t downgrade the graphics card even if you lower the CPU. 7850 is basically the bottom line. If you want to get an i5 or E3, just pay more