Every computer needs more memory, unless you've filled all your slots. Generally speaking, you always need more. No matter what you have, or if you're building something new, memory is vital. Usually, the more you have the better the computer will perform. Just make sure you have the "right stuff." Designed specifically to offer mainstream users excellent performance and quality at a lower price point, the TwinMOS line doesn't disappoint. It is perfect for those who want great performance but don't want to break the bank. Keeping that in mind TwinMOS's 1GB DDR2 533 (PC2 4300) module is perfect for adding to your computer's performance. Running at 533MHz, these modules are already primed for power. Just one of these modules will provide a huge performance increase that you may not want to remember what it was like before you added it to your system.