How To Check Free Ram Slots

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Windows Memory Diagnostic is a free memory tester provided by Microsoft. Very similar to other RAM test programs, Windows Memory Diagnostic performs a series of extensive tests to determine what, if anything, is wrong with your computer memory. Empty RAM slots Open the Task Manager and go to the Performance tab. Select ‘Memory’ and under the memory graph, look for the Slots used field. It will tell you how many of the total slots are currently in use. In the screenshot below, the system has a total of 2 slots, and one of them is in use.

When a user wants to add or upgrade memory (RAM) in a computer, they need to know how many memory slots are available. The following section helps you to determine the number of memory slots in your computer, and how many are used.

Windows Task Manager

The easiest solution for Windows users is to open the Windows Task Manager.

  1. Press the Windows key, type Task Manager, and then press Enter.
  2. In the window that appears, click the Performance tab (A), then select Memory (B).
  3. In the lower-right corner, the number of slots is displayed in the Slots used: section (C).

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  1. As you can see, this computer has a total of four memory slots, although only two are currently being utilized.

Use the CPU-Z utility

Another way to get information about memory slots and details about the RAM currently installed on your computer, is to use the free CPU-Z third-party utility.

  1. Open an Internet browser and visit the CPUID website.
  2. On the left side of the screen, select your operating system.
  1. On the next page, select your preferred language.
  1. On the next screen, click the DOWNLOAD NOW! button.
Slots
  1. Once the download has finished, install it from your browser and open the program.
  1. Click the SPD tab at the top of the screen, and then click the down arrow in the Memory Slot Selection section.
  1. As you can see in the image above, all of the memory slots are listed on the drop-down menu.
Tip

If you select a different slot from the drop-down menu, CPU-Z will tell you additional information about the RAM that is installed.

Examine the motherboard

Sometimes the best way to determine the available memory slots is to open the computer and examine the motherboard. Opening the computer is the best option if were unable to get the Windows Task Manager or CPU-Z to work.

Looking inside the case, the motherboard is the primary large circuit board. On most motherboards, the memory slots are on either side of the CPU, and resemble what is shown below.

Most computer motherboards have two, three, or four memory slots. Some higher-end motherboards have as many as eight. The above motherboard picture above has no memory modules installed in any of its three slots.

Note

If your computer has no memory slots available and you want to upgrade, you must remove and replace some of the existing memory.

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Additional information

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  • See our memory definition for further information and related links.

Upgradeable recommends the CPU-Z scanner tool to identify what type of RAM your computer uses and how many slots there are available.
CPU-Z is available for download on their website, it is a free download.
Using CPU-Z takes the guess-work out of upgrading your computer's RAM. Simply download the tool as a zip or exe file and simply run it.
If you would like Upgradeable to identify the RAM and recommend the best upgrade, please follow the steps in the image to your left and send us the txt file your computer generates. This file contains what RAM you have and the type of system. With this information we can recommend a 100% compatible upgrade.
Use our contact us form, attach the txt file to your message and we will reply as soon as possible.
Do you want to choose your own ram? Or dont want to wait and just quickly find out the cost of an upgrade? Scroll down for our quick DIY guide.


Windows

Here is the quick guide to identify your ram, the number of slots and how much it will cost.
We are assuming you have downloaded CPU-Z from their website.
The trick with CPU-Z is not to look in the Memory tab but use the SPD tab.
You can see how many RAM slots your computer has by using the 'Slot 1' drop down list.
The important information is what type of RAM - is it DDR2 or DDR3 or DDR4?
Then you need to know the speed. In the example to the left we can see it is DDR4 ram and the speed is 2400 not the (1200mhz). With this information you can find compatible RAM on our DDR3 or DDR4 pages.

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Tips for a compatible upgrade
Match new RAM to your existing ram speed. You do not get a speed increase mixing fast and slow ram, it always defaults to the slowest speed. There is a chance the new RAM will not be compatible. So there is no upside, and all downside - not a good bet.
Use the computer model information to search Upgradeable for your model. We do not charge more for brand specific RAM. Do not assume you can use 8GB or 16GB modules by default. Some models are limited to the amount of RAM it can use. If you are unsure internet search your model with 'max ram'. If your computer has 2 slots and the maximum RAM is 16GB then the biggest module you can use is 8GB. However if the maximum ram is 8GB then the largest module you can use is 4GB. This is number one reason for incompatible RAM.

How To Check Free Ram Slot

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