Upgrading from this -
3.2GHz Intel Pentium G3258 (@4.3GHz)
Akasa Nero 3 CPU Cooler
8GB DDR3 1,600MHz RAM
1TB SATA 7200rpm HDD (Seagate ST1000DM003)
500watt 80+ Aerocool PSU
Asus B85M-G
3 x USB 3.0, 5 x USB 2.0
MSI GeForce GTX 760 2GB VRAM, Core: 1085MHz (1150 boost), RAM: 1502Mz
Gigabit Ethernet
2x DVI, HDMI, DisplayPort PS/2 keyboard and mouse ports
AvP Viper Black or White
I have £600 ($800) but I don't know what to do to upgrade, please help me turn this PC into a high end rig if possible.