2. If you're building a new computer, follow the above step, except search for motherboard model specs rather than computer model specs. If you don't know the model, look for it printed on the board.
3. If you couldn't find your computer's specs, the info wasn't detailed enough, or you have a custom-built computer, also in the resources below and download the freeware SIW. Install and run it. On the left side, under the"Hardware" section, select "Memory."
4. The "Memory Summary" section on the right side shows the maximum amount of memory that can be installed in the system (listed as "Maximum Capacity"), and below that is the number of memory slots (listed as "Memory Slots"). The "Device Locator" sections tell whether or not memory is installed in that slot. To get the largest size module the motherboard supports, divide the "Maximum Capacity" by "Memory Slots." To get the speed and type, look under the "Device Locator" section, for the listing "Memory Type." Write down the PC#- part, where "#" is some number. Also for the listing "Speed," write down the value in parenthesis.For example, in 1200 MHz (DDR4 2400), write down only the (DDR4 2400). You now have the largest supported module, RAM speed,and DDR type. You can use either the PC r the speed and type when searching for RAM. 5. In Step 4, you found a supported RAM speed, but it may not be the fastest supported. Just to make sure, look to the left side in SIW. Under the "Hardware" section, select "Motherboard."
Using this info, go to the manufacturer's site or do a web search, and see if you can find what maximum RAM speed the motherboard supports. 6. If you're building a new computer and need to buy RAM, look up the specs on your motherboard to find out what kind of memory it supports. 7. The RAM you buy should be no larger than the max supported module size, and should match the type and speed supported by the motherboard.
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