How do RAM in 4 GB ddr2 ram prices DDR2, DDR3, and DDR4 compare? The meaning of RAM generations for you is explained here.


Random Access Memory, or RAM, is a temporary storage area that your computer uses to run tasks. When buying a new computer, you might only consider the amount of RAM.


RAM, however, is not created equal. Different RAM generations offer varying speeds and are only appropriate for particular systems. Here are the variations between older DDR2 and DDR3 RAM and the more recent DDR4 RAM.

Describe DDR RAM.

If RAM is new to you, you might not be familiar with the term “DDR.” The double data rate is indicated by this acronym.


Operating at a double data rate, or DDR, simply implies that the RAM can transport data twice per clock cycle. As you are surely aware, all information stored on a computer is digital and is denoted by the digits 1 (on) or 0 (off) (off).


The CPU signal switching from off to on and back again is a representation of one clock cycle. The graphic below illustrates how this is often calculated starting at the halfway point.


Compared to older SDR (single data rate) RAM, which could only operate once every clock cycle, this double data rate is a significant improvement. In 2000, DDR RAM first became widely accessible, and like SDR RAM, it is currently no longer in use. The majority of RAM that is currently on the market is DDR.

But why do these RAM generations alter?

DDR Generations – a Definition

DDR2, DDR3, and now DDR4 RAM have replaced the first-generation DDR RAM. Future iterations of the same technology all have the same physical dimensions and are faster and more advanced.


Since many computing standards change over time, this is not unusual. However, you might be curious as to how and why DDR2 and DDR3 came to be.


The evolution of processors and motherboards has a direct impact on the RAM generation utilized in computers. New motherboard chipsets are needed as new CPU technology is released by businesses like Intel. This is a group of electronic pieces that enables effective communication between every component of a computer.


In order to function with the newest chipsets, new generations of RAM are required. Because of this, there were three generations of RAM after the first: DDR2, DDR3, and DDR4. We wouldn’t be able to integrate RAM into newer systems without these developments.


RAM is not backwards or forwards compatible, which is important. DDR3 RAM will not function in a motherboard that is made for DDR4 RAM. Therefore, it’s crucial to get the correct generation of RAM for compatibility while constructing or upgrading a PC.


Because the notch on each generation of RAM is slightly different, it is difficult to install the incorrect type of RAM in your computer.

DDR2 versus DDR3 RAM

You might be curious about how the more recent DDR RAM generations compare. Let’s first examine the differences between DDR2 and DDR3 RAM. DDR2 RAM is still helpful for comparison, even if it’s hard to be found in many locations these days (it did become accessible back in 2004).


DDR2 RAM can perform four data transfers every clock cycle, as opposed to the two that first-generation DDR RAM could. This is considerably more advanced with DDR3, which can generate eight transfers per each clock cycle.


Unsurprisingly, DDR3 is faster in terms of speed. Measuring RAM speed using mega transfers per second, or MT/s, is one method. 1MT/s, or one million transfers per second, is the maximum number of activities the RAM can handle per second.


Data transfer rates for DDR2 RAM range from 400 to 1,066 MT/s, however DDR3 outperforms this with speeds of 800-2,133 MT/s.


Another crucial component of RAM formation is voltage. DDR3 RAM requires 1.5V, compared to 1.8V for DDR2 RAM. Lower voltage implies less power is used by the RAM, which relieves pressure on the CPU.


Although 4 GB DDR2 RAM sticks are available, 2 GB sticks remain the norm. DDR3 RAM is technically limited to 8 GB per stick, while several 16 GB sticks are available.

DDR3 versus DDR4 RAM

How does DDR4 RAM compare to other types of RAM as we continue our exploration of RAM variations? Although some older systems still use DDR3, which was first launched in 2007, DDR4 has since taken over as the industry standard.


DDR4 operates at 1.2V, which is even less voltage than DDR3. Additionally, it can perform more operations per second, 1,600MT/s to 3,200MT/s.


A single 32 GB stick of DDR4 RAM is available from Samsung, but it’s pretty pricey. The most memory you’ll typically encounter in the wild is 16 GB.


If you’re shopping, check out our buying guide on the top DDR4 RAM.

Upcoming: DDR5 RAM

DDR4 RAM is the industry standard as of this writing. But DDR5 is approaching and is anticipated to debut in 2020.


You are free to construct a computer with DDR4 RAM at this time because DDR5 RAM won’t likely become common for several years.

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How RAM Differences Affect You

Although we’ve discussed a lot of numbers above, don’t be intimidated. The typical user shouldn’t ever be concerned about what RAM generation to purchase. Simply let the motherboard/processor you intend to buy determine how much RAM you need. You’ll very definitely have a system that employs DDR4 RAM when designing a PC nowadays.


You might be curious about how performance is impacted by different RAM generations. It won’t actually matter that much to the typical user. Theoretically, DDR4 is quicker than DDR3, but your system’s RAM speed isn’t usually the bottleneck.


Other updates will typically boost your computer’s performance considerably. Slightly quicker RAM won’t make much of a difference compared to replacing your old HDD with an SSD, increasing your total amount of RAM, or improving your processor.


The key situation in which the subtleties of RAM actually matter is when it is put to intensive use, such in servers. Every performance component on these machines is critical since they operate under tremendous loads continuously. Except RAM generation, it would be difficult to tell the difference between two computers with identical metrics in everyday use.

Other Crucial RAM Features

Everything is already put together if you get a prebuilt computer off the shelf, so there are no concerns. However, aside from the generation that we have here concentrated on, there are other RAM numbers that you should be aware of if you’re creating your own PC.


Check out our general RAM guide for more information on other parameters.


Defining DDR, DDR2, DDR3, and DDR4

Now that you are aware of the fundamental variations between DDR2 and DDR3, you also know what DDR4 offers.


DDR2, DDR3, and the others are essentially minor upgrades to the same technology. You don’t need to worry much about it, except from making sure you get RAM that is compatible with your system (preferably the most recent generation). But for RAM, it’s important to understand what all those numbers and letters imply.