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Installing SODIMM Memory in your Laptop

This guide was developed to instruct readers on the proper procedures for installing SODIMM memory module into a laptop computer. It includes step-by-step instructions for the physical installation of a memory module into those laptop systems that have an access panel to the memory modules. Not all laptops have this type of access. If yours does not, then it will probably require installation from an authorized technician.

For additional information about installing computer memory into your computer system, it is recommended that you read any user manuals that came with your computer for specific procedures that may be required. For more information for purchasing memory upgrades for a computer, please refer to the Before You Buy Memory upgrades article.

Step 1: Get out the tools you'll need.

Non-magnetic screwdriver (for opening your case)

Your computer manual

Step 2: Ground yourself.

Static electricity can damage your module and other computer parts. You need to ground yourself to avoid 'shocking' your computer. If you have wrist straps designed for this purpose, you should wear them. If you don't have wrist straps, here is the easiest way to ground yourself:

Turn off the computer, monitor, and all accessories (printer, speakers, etc.)
Leave the computer power cord plugged in. (It's OK to unplug your accessories if you like.)
Briefly touch an unpainted metal part of your computer case.
Plant your feet and don't walk around. If you do need to walk around, ground yourself again before touching any of the internal parts of your computer.

Step 3: Open your computer case.

Every laptop case is a little different, so consult your manual to find out where your SODIMM slots are located and how to open that part of your laptop case. Some of the most popular places for SODIMM slots are:

Under the keyboard
Behind a back access panel

Locate the panel used for access to the memory modules. This is generally located on the bottom of the laptop computer. Refer to your laptop instruction manuals for locating the panel.

Remove any screws that the panel in place and place somewhere safe to prevent losing it.

Step 4: Find the SODIMM slots and banks.

Remove the panel from the laptop and set aside.

SODIMMs fit into slots that look like this. Some of your slots may be already filled with modules.

SoDIMM Slot
This notebook has two slots. Some notebooks may have only one slot.

While most SODIMMs are installed individually, some SODIMMs must be installed in matched pairs known as 'banks.' The memory banks on your motherboard should be clearly labeled.

Step 5: Remove the memory you are replacing (if necessary).

If you have an open SODIMM slot, skip this step and go on to Step 6. If all of your SODIMM slots are full, you will need to remove one or more of your old modules before you can install the new memory.

Press down on the retaining clips on either side of the module.
Remove the module from the slot.

If replacing or upgrading an existing memory module, remove the memory modules by undoing and module clamps and gently lifting the edge of the module to a 45-degree angle and then pulling the module out of the slot.

Step 6: Install your new module(s).

Take your module out of its anti-static bag and hold it by the edges.
If you have more than one open slot, fill the lowest numbered slot first.
Line up the notches in the row of metal pins at the bottom of your module with the keys in the SODIMM slot on your motherboard. (If the notches don't line up right away, flip your module around and try it the other way. It doesn't matter which side of your module has the black chips or the stickers on it. The important thing is to line up the notches.)

Align the notch of the memory module with that of the memory slot and gently insert the module into the slot at a 45-degree angle.

Once all the pins are in the slot, gently rotate the module down flat until the clamps lock into the module into place.

Step 7: Test it.

Once the memory has been installed into the computer, the physical process is complete. When the computer is powered back up, it may be necessary to go into the computer BIOS to let the system properly detect the new RAM that has been installed in the computer. Please refer to the user manual for the computer system for any additional information.

Before you close your case, turn your computer back on. You should see the new amount of memory displayed on your startup screens or in the properties for 'My Computer' (if you use a Windows operating system). If everything works correctly, skip to Step 9. If not, go to Step 8.

Step 8: Troubleshooting

If you have trouble with your new RAM, check these things first.

Check the power cords. Is everything plugged in properly?
Check the module. Did both side clips snap to hold the module firmly in place? Try removing the module and replacing it to make sure it is seated properly in the slot.
Check the wires and cables inside your computer. Did you accidentally bump one of the cables inside your computer while you were installing your module? A loose hard drive cable can prevent your computer from booting up properly. Make sure all the cables are firmly in their sockets.

Step 9: Close your case.

Replace the memory access panel.

Replace any screws or fasteners that hold the panel in place.

Laptops have only 2 memory slots so they are supposed to run in dual channel (if supported on the motherboard). Desktop motherboards, on the other hand, have 4 channels and even 6 to 8 channels, so you need to put the RAM sticks in channels that are similarly color-coded. Online Slots games come 2 X Slot Sodimm Memory Slot in many varieties, each with different jackpots and different outcome possibilities. Odds of winning smaller prizes are much greater than 2 X Slot Sodimm Memory Slot the odds of winning the top prize. While payback can be unpredictable in the short term, most Online Slots games pay back over.

Recently, I upgraded my laptop’s RAM from 8 GB to 16 GB and if you are on the same page wondering whether it is running in the dual-channel mode. Here is how to check it.

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Foremost, check on the manufacturer’s website that your motherboard supports dual-channel memory. Next, it’s pretty straightforward and you require an app called CPU-Z. But before that, we will have to understand what is the dual-channel mode and how to ensure you install a RAM in dual-channel mode. If you are well aware of these concepts, you can move ahead to this portion.

Consider the channels as roads from your RAM to the CPU. When there is a single channel or a single road, the vehicles have to drive in a single line behind each other. Whereas in the case of dual-channel memory, 2 vehicles can drive simultaneously which leads to an increased number of vehicles or more data being sent.

Now, there is an intermediatory unit between the RAM and CPU known as the memory controller which guides the data to and fro.

Previously in the single-channel architecture, there was a single path to send data. So, the memory controller couldn’t route data simultaneously from 2 RAM sticks. This caused the CPU to wait and it is known as the bottleneck effect. Later, we doubled up this wired route which is known as dual-channel architecture (you also have triple and quad-channel, let’s leave it for this article). This enabled the controller to route data simultaneously from 2 RAM sticks to the CPU. Hence, the CPU has enough data to process every time and it doesn’t have to wait. This eliminates the bottleneck between the CPU and RAM.

So switching to dual-channel will let you better utilize your CPU with the only bargain being the increased RAM stick. To show the difference between single-channel and dual-channel, I did a benchmark with a single Crucial 8GB 2400 Mhz RAM and 2 x 4 GB 2400 Mhz RAM sticks. The results show that when in dual-channel mode (ie. 2 x 4 GB sticks), the read-write speeds are about 25-30% higher.

Read: CRU Monitor Overclocking and How Do You Do It?

How to choose RAM for dual-channel mode

To begin with, I am using an Acer E5-575G laptop which uses SODIMM memory sticks. In simple words, DIMM is basically longer memory sticks for desktop motherboards whereas SODIMM is a smaller memory stick for notebooks. Here, I am using a SODIMM memory for my laptop which has 2-memory channels.

Laptops have only 2 memory slots so they are supposed to run in dual channel (if supported on the motherboard). Desktop motherboards, on the other hand, have 4 channels and even 6 to 8 channels, so you need to put the RAM sticks in channels that are similarly color-coded. For instance, in the below figure, the RAM channels are colored black and blue. So, if you insert the RAM sticks in the blue slots or black slots it would run in dual channel mode. In case you insert one of the stick in the black slot and the other one in the blue slot, it won’t run in dual channel mode.

With all the complexities aside, now let’s move down to RAM specs. There is a lot of confusion on RAM specs and what dual-channel requires, let’s discuss those.

Foremost, it’s advisable to buy RAM kits or the same RAM units. The reason being, the RAM needs to have the same Double Data Rate version (DDR), the same frequencies and the capacity to run at full potential. Having said that, there are some misconceptions about the dual-channel mode.

If you have RAMs with different frequencies it won’t run in dual-channel mode.

Wrong! In case you have a 2400 Mhz RAM and 1800 Mhz RAM, it will run in dual-channel but will fall back to the lower 1800 Mhz frequency.

Similarly, if you have an 8 GB RAM and a 4 GB RAM stick, it won’t run in dual-channel mode.

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Wrong! This is called mismatched memory. However, due to modern-day CPUs, it will still run in dual-channel mode. The first 8 GB will run in dual-channel whereas the rest of the 4 GB will run in the single-channel. To know more about this, read about Intel’s Flex memory mode and flex mode even works on AMD CPU’s. Have a look, at the following screenshot.

However, if you have the budget and resources, it is advised to use a similar specification memory.

How to check dual-channel mode

The easiest way is by using a third-party app called CPU-Z. Download, install and open the app. The first page would provide you a summary of the CPU specifications. Move over to the Memory tab and in the first row you would see a labeled as “Channel #”.

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This shows you the memory channel mode. In my case, I have a couple of 8 GB RAM sticks installed on my laptop. So, you can see the channel mode says “Dual”. In case, you have memory sticks running in single-channel mode, it would show up as “Single”

Download CPU-Z

Additionally, you can also check the dual-channel mode through a benchmarking app like MaxxMem. Moreover, some manufacturers like the ASUS or the Acer predator show the memory channel mode in the BIOS menu itself.

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For iMac, you can do so using the System Information inbuilt app. Navigate to the Memory tab and you would see memory slots. Count the number of Banks to determine the number of channels. In my case, we have Bank 0 and Bank 1 which means dual channel.

In the case of Linux, you can use the following command

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Fore more issues or queries regarding RAM and dual-channel mode, let me know in the comments below.

Also Read: Best GPU Overclocking Software to Boost Graphics Performance