1. Use the motherboard book to make sure your RAM is the correct capacity & speed. Check to make sure you install them into the proper channels. Be sure to always use the same speed DIMM for each slot.

2. Line up the notch's in the RAM and the channel & drop it straight in. Push it down to snap it in.

3. Watch the system boot to verify that it recognizes it correctly.

Speed of the CPU

It represents how many cycles per second it can execute and how rapidly the CPU can process data.

DDR SDRAM 184 pin (pin/DIMM)

DDR2 SDRAM 240 pin

DDR3 SDRAM 240 pin

 DDR4 SDRAM 288 pin

SO-DIMM 200

SO_DIMM 204

 For DDR multiply the clock speed by 2

Example: If the clock is 100MHZ then it would be DDR-200

DDR2 multiply the clock speed by 4

Example: If the clock is 100MHZ then it would be DDR2-400

DDR3 multiply the clock speed by4

DDR4 multiply the clock speed by 8

Multiply the DDR speed by 8

Example: DDR400x8=PC3200

Usually only used by those with advanced servers such as those in high-end financial companies or scientific servers such as those used in spacecraft. They're significantly more expensive and uncommon in home computers.

They both contain extra chips to detect errors with in the RAM.

They can function even if a chip fails.

Small Outline Duel In-line Memory Module

Its chips are smaller and they are used in smaller devices such as laptop computers and printers

They come as follows:

DDR SDRAM SODIMM 200 pins

DDR2 SDRAM SODIMM 144 or 200 pins

DDR3 SDRAM SODIMM 204 pins

Duel In-line Memory Module

It is the circuit board that holds the memory chips on the RAM.

It is 64 bits wide.

It comes packaged as follows:

DDR SDRAM DIMM 184 pins

DDR2 SDRAM DIMM 240 pins

DDR3 SDRAM DIMM 240 pins

DDR4 SDRAM DIMM 288 pins

Dynamic Random Access Memory

Dynamic refers to how bits are stored in an electrical component called a capacitor. The capacitor holds the bits as a charge, but the capacitor needs to be regularly refreshed to hold the charge.  This configuration uses very few components per bit, keeping the cost low, but the constant refresh reduces speed there for is not very efficient.

Static Random Access Memory

It is faster than DRAM because it uses switching circuitry instead of capacitors and can hold a charge with out constant refresh. Its timing is matched to the system clock. Due to the extra components per bit  it is more expensive. Due to the speed SRAM is commonly used for CPU cache but is rarely used as the primary RAM because of its cost.

Synchronous Dynamic Random Access Memory

SDRAM is synchronized with the CPU clock speed for faster speeds. Almost all primary DRAM used in computers today is SDRAM, but its often listed as DRAM to avoid confusion.

(DRR)SDRAM    184PIN DIMM

Double Data Rate     Synchronous Dynamic RAM

SDRAM is tied to a clock, and when the clock ticks, data is transferred. DDR double pumps and has four clocks from the same two cycles there for doubling the data rate of SDRAM.

DDR2 240PIN DIMM

200PIN SO-DIMM

DDR2 doubles the data rate of DDR. In addition to double pumping, it modifies the way the data is processed and can transfer twice as much data as DDR SDRAM.

DDR3 has 240pin DIMM

204 PIN SO-DIMM

DDR3 doubles the data rate of DDR2. It uses double pumping and further modifies the way data is processed. It can transfer four times as much data as DDR and eight times as much data as SDRAM. It is the primary type of RAM you see in most systems today. It supersedes DRAM, DDR SDRAM, and DDR2 SDRAM. 

DDR4 288PIN DIMM

Notable improvements that DDR4 makes over its predecessor, DDR3, are a greater range of clock speeds and timings, lower power consumption(it runs between 1.05V & 1.2V), and reduced latency. So this means that higher transfer rates can be achieved at lower voltages, which equates to greater system stability over time. The last boost that DDR4 has over DDR3 is that DDR3 configuration is 128GB max while DDR4 maxes out around 512GB.