Cassandra and MongoDB are both âNoSQLâ databases, but the reality is that they are very different . They have very different strengths and value propositions â so any comparison has to be a nuanced one. Letâs start with initial requirementsâ¦ Neither of these databases replace RDBMS, nor are they âACIDâ databases.
If your laptop is running on no more than 512MB of RAM with Windows XP or no more than 1GB of RAM with Windows Vista or Windows 7, you should upgrade. You'll notice a significant difference in system performance after upgrading to 2GB with XP or Vista, or to 4GB with Windows 7.
So here's the answer you probably don't want to hear. In most cases, it isn't possible to upgrade a laptop's graphics card. If you want better gaming performance, the only sensible option is to buy a new laptop.oing this gives you an extra graphics output so you can drive an external monitor as well as your laptop's built-in screen. If your laptop already has a VGA, DisplayPort or HDMI output, adding a USB graphics card means you can drive a third screen: you're not limited to two displays.