請問我的電腦設配該換了嗎?

Operating System: Windows 7 家用進階版 32-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_ldr.170209-0600)
Language: Chinese (Traditional) (Regional Setting: Chinese (Traditional))
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: G31MX-S2
BIOS: Award Modular BIOS v6.00PG
Processor: Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz (2 CPUs), ~2.3GHz
Memory: 3070MB RAM
Available OS Memory: 3070MB RAM
Page File: 3007MB used, 3132MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: 120 DPI (125 percent)
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode


目前玩線上遊戲,同時開網頁的話,都會LAG,想直接換一台新的,
請問目前的電腦設備算很老舊了嗎?
可以拿去拍賣嗎?大概值多少呢?感謝