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How to identify a ddr1, ddr2 and ddr3 memory?
26

Nov, 2019

How to  Identify a DDR, DDR2,DDR3 Memory?


DDR1:

One notch, one-sided 92-pin, double-sided 184-pin, left 52-right 40, memory grain rectangle

DDR2:

One notch, single-sided 120-pin, double-sided 240-pin, left-64-right 56, memory grain square, voltage 1.8V

DDR3:

One notch, one-sided 120-pin, double-sided 240-pin, left-72-right 48, memory grain square, voltage 1.5V



Memory bandwidth and frequency comparison table


If your memory in trouble

Random crash

This type of failure is generally due to the use of several memory chips of different chips, due to the difference in speed of each memory module, resulting in a crash, which can be solved by reducing the memory speed in the CMOS setting. Otherwise, only use the same type of memory.

Another possibility is that the memory module is incompatible with the motherboard, which is generally rare. In addition, the computer may crash randomly due to poor contact between the memory module and the motherboard.

System enters safe mode

This type of failure is usually due to the motherboard being incompatible with the memory module. Frequently, high-frequency memory is used on some motherboards that do not support this frequency. You can try to reduce the memory reading speed in the CMOS setting to see if the problem can be solved. If not, you can only replace the memory module.

Can't display when booting

This kind of failure is usually caused by the bad contact between the memory module and the motherboard memory socket. As long as you wipe the metal part back and forth with an eraser, you can solve the problem (do not clean with alcohol). There is also damage to the memory or a problem with the motherboard's memory slot. Due to the memory module, there is no display failure during startup, and the speaker of the host will generally beep for a long time (for Award BiOS).





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