The RAM is one of its most important modules in a computer; it stores the instructions of frequently used programs to increase the speed of a system. The RAM is the device which reads or writes the data. The DDR3 RAM was released in 2007 which at the time had the best speeds and was immediately put into use in any new server. Seven years later the next champion, the DDR4 RAM was released with even better performance especially in regards to data rates and peak transfer rates.
In terms of physical form, the DDR4 RAM is very similar to the DDR3 RAM, the main physical difference being the number of pins found in each of them. The DDR3 RAM has 240 pins while the former carries 288 pins.
Below are some of the main improvements DDR4 RAM has over the DDR3 RAM, helping it to take its position as the number one on the computer memory hierarchy. While the DDR3 RAM runs at a voltage of 1.5V and its low power modules run at a voltage of 1.35V, the DDR4 RAM runs at a voltage of 1.2V while its low power modules run at a voltage of 1.05V, this is a vast improvement when compared with its predecessor. The power saved in the long run will be huge. Operating at a lower power means that it’s also able to perform at a lower temperature when compared to the DDR3 RAM.
When it comes to data rate transfer speeds, DDR4 RAM begins at 2133MHz and is able to reach speeds of up to 3200MHz, while its predecessor is comparatively much slower. DDR4 RAM chips are manufactured to support densities of up to 2GB per chip doubling the density of a DDR3 RAM, which simply put means that normal customers are able to purchase 16GB of DDR4 RAM in a single stick form and when it comes to server grade memory the ability to have 64GB of memory on a single stick is quite impressive.
DDR4 RAM is not perfect just yet it does have its flaws, when it comes to the cost it could be up to 50% costlier than its predecessor, however as history has shown DDR4 RAM will become much more affordable over time with the uptick of its use. Due to the higher frequency and the looser timings, the DDR4 RAM will most likely not run any faster for the moment; however, this will change when a version with a higher frequency and tighter timing sense hits the market.
So when it comes to answering the main question: which memory is the best?, well it really depends on the system you use, the DDR4 RAM is not compatible with servers built for a DDR3 RAM, however the DDR4 RAM does have a slight advantage over its predecessor, considering that it is the latest iteration as well as its power saving capabilities and the storage densities the DDR4 RAM is more likely to perform at a much higher ability in the server memory world.