![]() So, if you want to store more files and data, the 3.5 inch HDDs would be a better choice. Through comparison, you can find that the maximum storage capacity available in 3.5 inch HDDs is around twice than the storage capacity of 2.5 inch HDDs. Generally speaking, 3.5 inch HDDs have far greater range of storage capacities than the 2.5 inch HDDs. When it comes to hard drive storage capacity, it would an essential factor to consider because large capacity of hard drive is able to store more files and data. So, as for the revolutions per minute, the 3.5 inch HDD would be better than the 2.5 inch hard drives. As for 2.5 vs 3.5 HDD, although both of them support the PRMs mentioned in the above, it is easier for 3.5 inch HDDs to have great spin speeds than the 2.5 inch HDDs because of their higher power consumption and physical dimensions. There is no doubt that the higher the RPM, the faster would be the performance of the hard disk. (For more differences of 5400 RPM and 7200 RPM, you can read the post: 5400 RPM vs 7200 RPM: Is RPM Still Important?) In general, the HDDs use standard spin speeds of 5400 RPM and 7200 RPM. You can also call it the spin speed of the disks. It is the RPM, whose full name is the Revolutions Per Minute, which is a measure of the speed of rotation of the disks inside of the HDDs. Here, we will show you the fifth difference between 2.5 vs 3.5 HD. Hard drive is equipped with the cache that makes the data transfer in and out much more efficient and reduces the data access time.Īs for 2.5 vs 3.5 HDD, the 3.5 inch HDD generally has a higher cache size as compared to the same 2.5 inch HDD for the same price tag. 2.5 vs 3.5 HDD: Cache SizeĪnother difference between 2.5 HDD vs 3.5 HDD is the cache or disk buffer that is able to reduce the access time. However, power consumption is not a major problem of desktop computers, so the 3.5 inch HDDs are used in desktop computers without any restraint considering the power consumption. Besides, the read and write power rating of 2.5 inch HDDs is around half of the read and write power rating of 3.5 inch HDDs with similar specifications. The 2.5 inch HDD has smaller mechanical parts, thus consuming less power than the 3.5 inch hard drives even though they are with similar specifications. 2.5 vs 3.5 HDD: PowerĪs for the 2.5 vs 3.5 HDD, their power consumption or power rating is another major difference. The 2.5 inch hard drive is the standard size of large capacity SSD drives and also the standard size for portable external HDD. In addition to being used in laptops, the 2.5 inch HDDs also have more applications. If you want to install the 2.5 inch HDDs on the desktop computers, an adapter is required, which allows the 2.5 inch HDDs to be converted so that its interface is like a 3.5 inch HDDs. However, this does not mean that 2.5 inch HDDs cannot be installed in desktop computers. In general, the 2.5 inch HDDs are used in the laptop, while the 3.5 inch HDDs are mostly used in desktop computers and Servers. The second difference between HDD 2.5 vs 3.5 we will mention is the application of the hard disk. One thing you also need to pay attention to is that only these two form factors exist in the HDD market while the older and larger ones are now obsolete. And with time goes by, the size of hard disk is decreasing and the 2.5 inch HDDs are newer than the 3.5 inch HDDs. In conclusion, the weight of 2.5 inch HDDs is much less than 3.5 inch HDDs. They are also designed to be compact so that their thin dimension can be put to maximum advantage where less space is available. On the whole, the 2.5 inch HDDs are smaller in length, width and height than the 3.5-inch HDDs. The 2.5 inch HDD is normally around 3 inches wide, whereas the 3.5 inch HDD is around 4 inches wide in diameter. ![]() The most obvious difference between 3.5 vs 2.5 HDD is the hard drive size. In this part, we will show the differences between 2.5 HDD vs 3.5 HDD. 2.5 VS 3.5 HDD: What Are the Differences? So, in the following section, we will show you the differences between 2.5 vs 3.5 HDD. With different form factors, 2.5 HDD and 3.5 HDD also have some differences. By the way, the form factor of hard disks denotes the diameter of the disk platter inside the hard disk. Hard drives generally come into two different form factors which are 2.5-inch and 3.5-inch. The hard drive is used to store all files and the operating system on the computer. ![]() Hard drive is an indispensable part of the computer since it ensures that that computer runs normally.
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