Best Products Computer & Laptops Your Laptop Memory (RAM) Buyer's Guide Select the proper amount and type of RAM for a laptop Share Pin Email Print The Ultimate Laptop Buying Guide The Ultimate Laptop Buying Guide Introduction Laptop Basics Laptop Size & Weight Guide Laptop Networking Guide Laptop Memory Buyer's Guide Laptop Processor Buyer's Guide Display & Graphics Guide Types of Laptop Drives Guide Netbook vs Laptop Hybrid vs Convertible Laptop Understanding Laptop Warranties Best Laptops Best Laptops Best Places to Buy a Laptop Best Linux Laptops Best Windows Laptops Best Laptops for Under $200 Best Laptops for Under $500 Best Touchscreen Laptops Best Laptops at Walmart Best Workstation Laptops Best Laptops by Size Best 14- to 16-Inch Laptops Best 13-Inch Laptops Best 17-Inch and Larger Laptops Best Lightweight Laptops Best Mini Laptops Best Laptops by Brand Best Lenovo Laptops Best Dell Laptops Best Acer Laptops Best ASUS Laptops Best HP Laptops Best Gaming Laptops Best Gaming Laptops Best Gaming Laptops for Battery Life Best Gaming Laptops for Under $1,000 Best Gaming Laptops Under $1,500 Best Laptops for Fortnite Best Laptops by Lifestyle Best Business Laptops Best Laptops for College Students Laptops for Engineering Students Best Laptops for Graphic Design Best Laptops for Kids Best Laptops for Photography Best Laptops for Video Editing Best Laptops for VR Best Laptops for Writers Individual Laptop Reviews Acer Aspire E 15 Review Apple MacBook Pro 13-Inch (2019) Review HP 15-BS013DX Review HP Notebook 15 Review HP Pavilion 15z Touch Review HP Spectre x360 15t Touch Review Best Laptop Accessories Portable Battery Chargers Compact Desks & Stands Rolling Laptop Bags Best Laptop Backpacks Best Laptop Bags Laptop Cases and Sleeves Laptop Cooling Pads Best Laptop Mounts Laptop Computer GPS nazarethman / Getty Images By Mark Kyrnin Writer Mark Kyrnin is a former Lifewire writer and computer networking and internet expert who also specializes in computer hardware. our editorial process LinkedIn Mark Kyrnin Updated November 02, 2019 87 87 people found this article helpful Laptops are limited in the amount of memory that can be installed in them. Access to that memory may also be difficult, depending on the architecture, which limits plans for a future upgrade. In fact, some systems come with a fixed amount of memory that cannot be changed or upgraded. How Much Memory Is Enough? To determine if your computer has enough memory, look at the minimum and recommended requirements of the software you intend to run. Your computer should have more RAM than the highest minimum and at least as much as the highest recommended amount. There are many different types of RAM. Make sure you choose the best type of RAM for your computer. Also, consider your computer's operating system. Some operating systems use more memory than others. For instance, a Chromebook running Chrome OS runs smoothly on 2 GB of memory because it is highly optimized, but it can certainly benefit from having 4 GB. Many laptops use integrated graphics controllers that require a portion of the system RAM for the graphics. This reduces the amount of available system RAM by 64 MB to as much as 1 GB, depending on the graphics controller. If the system uses an integrated graphics controller, consider a step up in RAM to account for this usage. Types of Memory Memory technology changes regularly as computer architectures advance. Faster CPUs require faster memory with bigger bandwidths. The speed of the memory has an impact on the system's performance. When comparing laptops, check both pieces of information to determine how they may impact performance. There are two ways that memory speeds are designated. The first is by the memory type and its clock rating, such as DDR3 1333MHz. The other method is by listing the type along with the bandwidth. The same DDR3 1333MHz memory would be listed as PC3-10600 memory. Below is a listing in order of fastest to slowest memory types for DDR3 and DDR4 formats: DDR4 3200 / PC4-25600DDR4 2666 / PC4-21300DDR4 2133 / PC4-17000DDR3 1600 / PC3-12800DDR3 1333 / PC3-10600DDR3 1066 / PC3-8500DDR3 800 / PC3-6400 It is easy to determine the bandwidth or the clock speed if the memory only lists one of these values: If you have the clock speed, multiply it by 8.If you have the bandwidth, divide that value by 8. Sometimes these numbers are rounded so they will not always be exactly what you calculated. Laptop Memory Limitations Laptops generally have two slots available for memory modules, compared to four or more in desktop systems. As such, they are limited in the amount of memory that can be installed. Some brands and models of laptops, such as ultraportable styles, have a fixed memory size that cannot be upgraded. A laptop requires a specific type of memory, such as one of those in the list above. If your laptop is designed to use DDR3 memory, for example, you can't use DDR4 memory and expect it to perform. The same is true for the speed and bandwidth requirements of the system; determine the proper memory type your system accepts before purchasing a memory upgrade. Also, a computer has a maximum amount of RAM it can accept that is not based on the physical number of slots. For example, you may be able to purchase two 16 GB memory modules, but that 32 GB total may be over the maximum allowed by your system. All these limitations are listed in the specifications of any laptop, so be sure to take note of them. What to Consider When Shopping First, find out what the maximum possible memory of the system is. This is listed by most manufacturers and indicates the upgrade potential of the system. Next, look at the memory configuration. For example, a laptop that has 8 GB of memory can be configured as either a single 8 GB module or two 4 GB modules. A system configured with a single memory module has a second memory slot open, one that can be used to expand the amount of RAM in the future by adding a second memory module. Upgrading memory in a system with both memory slots filled with memory modules comes with a few additional considerations. In a laptop with two 4 GB modules (totaling 8 GB of system memory), one module will need to be replaced with a larger capacity module. For example, replacing one of the 4 GB modules with a new 8 GB module would give a total of 12 GB (the new 8 GB module and the original 4 GB module). However, it is better to upgrade both 4 GB memory modules at the same time to ensure the fastest performance. Memory modules are usually paired to work with each other in a dual-channel mode and having two modules of differing capacities will not work as efficiently as would a matched pair. It is best to use memory modules with matching capacities, speeds, and manufacturers. A better choice is to buy a matched pair of modules in a set when upgrading memory. Installing Memory Yourself Many laptops have a small panel on the underside of the system that provides access to its memory module slots. On other systems, the bottom cover may need to be removed to access the memory modules. In these cases, it is possible to purchase a memory upgrade and install it yourself without much trouble. If a system doesn't have an access panel or other means to get inside the computer, the memory, most likely, cannot be upgraded. In these cases, the laptop may be opened by an authorized technician with specialized tools to upgrade the memory. Of course, this comes with additional costs. If you anticipate a need for more memory in your new laptop soon after buying, or you intend to keep it for a long time, invest a bit more and buy a model preconfigured with a larger memory.