Which is better, mobile hard disk 2.5 or 3.5?

Is a mobile storage device, but in other respects:

3.5 inch: (as big as the previous video tape) is for desktop use, which is cheaper and has better performance, but it is not convenient to carry!

2.5 inches: for ordinary notebooks, it is smaller and easier to carry!

1.8 inch: Now many manufacturers have produced 1.8 inch hard drives, which are generally used for ultra-thin notebooks. They are smaller but more expensive.

There are only three kinds of hard disks on the market now!

When buying, we usually look at its capacity, average seek time, speed, cache and so on.

Now, the capacity of 3.5 inches is generally larger, ranging from 80g to 500g. Average seek time is 12S, the speed is 7200 rpm, and the cache is 8M to 16M!

The capacity of 2.5 is 20G- 120G, average seek time is 12S, the rotating speed is 4200, there are 5400, there are 7200, there are 2M and 8M caches!

1.8 inch now seems to be about 40G, with a speed of 4200 and 2M cache.

Generally, the transmission speed of hard disk is 100. Now, the first generation of SATA hard disk is 150, the second generation is 300, and the third generation is 600, and it supports hot plug. SATA hard disks have become popular on 3.5-inch hard disks, some of which are expensive. SATA was not found on 1.8.

They all use USB interface, so they can use it at will.

The boxed one is the same as the original one. If you often go out with a hard drive, I think 2.5 is better! You can see the size of the capacity yourself. If the game is still 60, just use it yourself. There is no need to be too good! Hard disk plus box, 60G, 5400rpm, 2M cache is enough!

Hard disks and boxes are best branded! guaranteed quality ...