使用新安装的Windows 10和Ubuntu 20.04的Inspiron 5558上的性能极慢

我发现2015年的旧笔记本电脑具有以下规格。

  • 型号:Inspiron 5558(CPU:i5-5200u,GPU:GeForce 920mx)
  • 内存:8GB(DDR3)
  • 储存:HDD(1TB 5200RPM)
  • 操作系统:Windows 10 / Ubuntu 20.04(Dual boot)

More System Information

It's extremely slow for the specs it has. Day to day use is nearly impossible. I tried running geekbench 5 to see how it compares. Geek Bench Results. In short, I got single-core: 67 and multi-core: 216 compared to (700, 1500) what others got on the same model. I also checked CPU usage(100% usage) while running geekbench. I also ran ubuntu's disk benchmark and the results were normal as it gave me a read speed of 108MB/s on this HDD. Geekbench results on ubuntu were also very similar. Geekbench OpenCL(920mx) gave me a score of 3000 which is also normal considering the old GPU and 920mx. There are no signs of overheating.

我不明白到底哪里出了问题?

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