1
Q
DDR
A
DDR is a new generation from the original synchronous DRAM (SDRAM)
164 pin
2
Q
DDR2
A
240 pin
3
Q
DDR3
A
240 pin
4
Q
DDR4
A
288 pin
5
Q
DDR5
A
288 pin
6
Q
Form Factors
A
es in various form factors (packages), with the form factor determining the number of pins and the size of the memory module. Generic form factor labels that you should be familiar with are described in the following table.
7
Q
Common RAM Types Table
A
The following table lists common memory types with various memory speed designations.
Comptia A+
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