Having said that, another good thing about purchasing RAM for your Mac is that the products sold are mostly from a newer generation, that is, DDR3. This undoubtedly enhances the performance overall. However, these RAMs are comparatively more expensive than the conventional PC RAMs, which calls for a more detailed and close analysis before the purchase is made. So, check out all the products that are listed according to your requirements and choose the best one for yourself. You can buy them from your preferred online shopping websites like Amazon, Flipkart, eBay, etc.