求解 想升级怎么升级？

电脑型号技嘉B85-HD3台式机
处理器Intel(R) Xeon(R) CPU E3-1230 v3 @ 3.30GHz
内存容量16.0GB
显卡NVIDIA GeForce GTX 970
硬盘1、Samsung SSD 840 EVO 120G SCSI Disk Device (120GB)
2、ST1000DM 003-1CH162 SCSI Disk Device (1.0TB)
主板B85-HD3 (x.x)
网卡Realtek PCIe GBE Family Controller
声卡1、NVIDIA High Definition Audio
2、Realtek High Definition Audio
3、NVIDIA Virtual Audio Device (Wave Extensible) (WDM)
显示器S24C570 分辨率:1920x1080
当前操作系统Windows 7 64位