As long as they're the same type (DDR2, DDR3). The speed of the RAM should either be the same or higher than your original since the computer matches all installed RAM to the lowest speed. e.g. my computer currently has a 2GB 800MHz DDR2 as well as a 1GB 667MHz DDR2. But the RAM is set to 667MHz and isn't utilising the full 800MHz on the 2GB.
In general laptops are not easy to upgrade. You MAY be able to add more RAM, but some laptops are sold with the maximum RAM they can handle already installed. You probably cannot upgrade the CPU, but you can't necessarily upgrade the CPU in a desktop without replacing the motherboard.The only upgrade that you can almost certainly make is to increase the size of the hard drive.
Unfortunately not. You can't remove, change, or add any RAM to the Raspberry Pi.
You cannot. With the introduction of the MacBook Pro Retina line in 2012, it's not possible to upgrade your RAM as you could with previous MacBooks.
RAM and HDD are possible, GPU is not really possible for a laptop.
It is possible to increase the amount of RAM on your computer through an upgrade. These upgrades would be able to increase your RAM by a few Gigabytes.
You can upgrade your computers perfomance by purchasing a memory ram upgrade or you can look into getting a more recent operating system like Windows 7 or Windows Vista.
The cost of a Compaq Presario Memory Upgrade is about $599. The cost of the Compaq Presario Memory upgrade requires purchasing a new laptop computer with the systems upgrades already installed by the manufacturer. The laptop computer can be upgraded from a 32 bit to a 64 bit performance level is a new computer is not a part of the budget. However, the best way to upgrade any computer is to simply purchase the latest offering from Dell or Microsoft computer products.
I was able to install 1.5 gigs of ram. I tried to upgrade to 2 gigs, but the computer would not recognize it.
Right click on My Computer > properties.
In RAM Slots.
Adding RAM (Random Access Memory) depends on how many RAM Slots your computer has. If you have an empty slot or can upgrade RAM in existing slots, yes you can upgrade your RAM.
A full upgrade would be your CPU to a higher speed, your RAM for more memory and your video card so you can play faster games. But you have to be careful, your power supply that is installed was installed with the wattage for that particular system. If you do a full upgrade you may find that your power supply can no longer produce enough power to your motherboard, then you would have to add a new power supply also.