Can I Use Ddr3 Ram In Ddr2 Slot

Posted on3/13/2022by admin

DDR2 vs DDR3 RAM - What's the difference between DDR2 and DDR3 memory? How do you tell them apart? Can you use DDR3 RAM in a DDR2 socket? Get the full answers right here.

Can We Use Ddr3 Ram In Ddr2 Slot
Can I Use Ddr3 Ram In Ddr2 Slot Machine

I bought some and it turned out to be the wrong size (how was I to know that iMacs use notebook RAM;-) so i got stuck with a couple 4 gig sticks of DDR3 (1333) However, my other PCcould sure use some ram, but it has PC5600 (or thereabouts speed) DDR2. There have been motherboards that support both DDR2 and DDR3 RAM but you can only use one or the other at the same time. For example: MSI P45-8D. Not open for further replies. Putting Ddr3 Ram In Ddr2 Slot When all Putting Ddr3 Ram In Ddr2 Slot the changes happened in the U.S., many professional real money gamblers moved to Canada to take advantage of staying in the same time zones but being able to keep playing at Putting Ddr3 Ram In Ddr2 Slot their favorite sites.

The RAM found in most modern desktop and laptop computers is DDR3 RAM (DDR3 is short for Double Data Rate Type 3). To be more precise, its full technical name is DDR3 SDRAM.

If your computer was built in 2008 or earlier, then chances are that it has the older DDR2 RAM instead.

At buildcomputers.net, we don't take chances or make guesses... so let's learn what are the differences between DDR3 vs DDR2 RAM and how to tell them apart.

How to Tell If You Have a DDR2 or DDR3 RAM Module

In terms of physical appearance, DDR2 vs DDR3 RAM looks largely similar. They are of the same length (~13.3 cm or 5.25 in) and have the same number of pins (240):

Here's the trick to tell them apart: Look at their notch positions (circled in yellow above).

As you can see from the image below, the DDR2 notch is located near the middle of the RAM stick while the DDR3 notch is positioned nearer to the left side. If you want to be more precise,

DDR2: distance between left side of RAM stick and notch = 7.1 cm (2.8 in)
DDR3: distance between left side of RAM stick and notch = 5.4 cm (2.1 in)

This difference in notch position is also why you can't use DDR3 RAM in a DDR2 system or install DDR2 RAM into a DDR3 slot (even though they have the same number of pins).

In short, DDR2 and DDR3 RAM are not compatible with each other: If your motherboard has DDR2 RAM slots, then you can only use DDR2 RAM. The same applies to DDR3 RAM.

What's the Difference between DDR2 and DDR3 RAM?

Number of Pins Clock Speed Max Transfer Rate Voltage	DDR2 RAM 240 pins 400 to 1,066 MHz 3,200 to 8,533 MB/s 1.8V	DDR3 RAM 240 pins 800 to 2,133 MHz 6,400 to 17,067 MB/s 1.5V
Number of Pins	240 pins	240 pins
Clock Speed	400 to 1,066 MHz	800 to 2,933 MHz
Max Transfer Rate	3,200 to 8,533 MB/s	6,400 to 17,067 MB/s
Voltage	1.8V	1.5V

From the DDR2 vs DDR3 table above, we can see that DDR3 RAM offers better performance while consuming less power.

The difference in clock speed and max transfer rate numbers look impressive on paper, but DDR3 RAM is in fact just 2 to 10% faster than DDR2 RAM for most real-world applications (depending on your hardware specification and usage).

DDR3 RAM consumes less power and produces less heat than DDR2 RAM at the same clock speed (e.g. DDR3 vs DDR2 RAM that is both running at 1,066 MHz). However there is a catch: RAM with higher clock speeds have higher power consumption so DDR3 RAM running at 2,133 MHz will still drain more power than DDR2 RAM at 1,066 MHz.