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. May 24, 2017 Each and every motherboard is built in such a way that supports a special type of memory/RAM. If it is DDR2 then you must use DDR2 RAM only. You can't use a ddr3 ram on a ddr2 slot and vice versa. Answered May 25, 2017 by Ludwig Randell ● 3 ● 6 ● 33.

How to identify computer ram ddr1 ddr2 ddr3, DDR4 Identifying the Computer RAM (Random Access Memory) like DDR1, DDR2, DDR3, and DDR4 physically is not so hard if you follow the steps.

1. Distance of Notch
2. Integrated Chip (IC) type

DDR1, DDR2, DDR3, DDR4 is the most using RAM currently in the market.

Can I Use Ddr Ram In Ddr2 Slot 1000

First of all confirm is it DDR1, DDR2, DDR3, or Different DDR’s SDRAM. keep your DDR chip front-facing as given bellow. here look to the notch each DDR notch distance is different from others DDR. It’s mentioned in the picture.

Also Read :

Distance of Notch

• • Notch Means above cuts Mark on RAM
    • DDR1, DDR2, DDR3 having Single Cut mark on the base of the RAM
  • But you can see the Cut mark (Notch) distance (see below photo)
    • Notch of DDR1 and DDR2 are similar but if you see closely,
      • You can find DDR1 Notch is just above the IC and DDR
      • DDR2 Notch is just far to the IC
    • Notch of DDR3 is different from the other two.

• Integrated Chip (IC)

  • See the Above Photo
    • DDR3 having small and square type IC.
    • DDR2 is just bigger then DDR3 and smaller the DDR1,
    • In this case, too, DDR1 and DDR2 are just a small difference
      • IC in DDR1 are touched both top and bottom of RAM
      • and IC in DDR2 is just center of the RAM

• Number of Pins in DDR1, DDR2, DDR3, DDR4

  • DDR1 – 184 Pins
    • DDR2 – 240 Pins
      • DDR3 – 240 Pins
        • DDR4 – 288 Pins

• Voltage of RAM

  • The voltage of RAM cannot be used for the Physical finding of RAM, but it can be used to place the RAM in the Motherboard Slot. (voltage are written in the RAM Slot of Motherboard)
    • DDR1 Volts – 2.5 v
      • DDR 2 Volts – 1.8 v
        • DDR3 Volts – 1.5 v
          • DDR4 Volts – 1.2v

• Click to Buy Best DDR RAMs for Desktops

• Click to Buy Best DDR RAMs for Desktops

identify computer ram ddr1 ddr2 ddr3

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.

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).

Ddr Vs Ddr2 Vs Ddr3

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?

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.

Recommended RAM

Budget Computer: 2 x 4GB Crucial DDR4 3200Mhz

Mid Range Computer: 2 x 8GB Corsair Vengeance LPX DD4 3600Mhz

Gaming Computer: 2 x 16GB Corsair Vengeance Pro DDR4 3600Mhz

Home Theater PC: 2 x 8GB Corsair Vengeance LPX DDR4 3600Mhz

RAM GUIDE

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