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However, the increased electronics and the cost of semiconductor chips mean that such storage disks are also significantly more expensive, and are not typically meant for retail consumers (that would be you and I).
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These drives contain built-in batteries that ensure they can hold onto the data written on them even when the PC is switched off. Some super-premium SSDs use RAM chips instead of flash for storage, making them much faster than standard solid state drives.
This is especially true for programs that don’t normally use RAM as a cache and instead, save small files to secondary storage. However, all said and done, games and programs installed in RAM disks do seem to open and operate significantly faster than the ones installed in standard SSDs. While it is okay in computers with a ton of RAM, it could be a no-go in older or cheaper systems with not a lot of memory to spare. RAM disks also reserve a large part of your memory, which means you can’t use it for anything else. Of course, you can save your RAM Disk data to an image file before every shutdown and re-load it at every startup to mitigate the issue, but that would increase system startup and shutdown times, thereby negating the very point of creating RAM Disks in the first place. Which means, all data stored there would be lost the moment the PC is switched off or there’s a power outage. The biggest problem here is that RAM is volatile memory. However, in spite of its obvious benefits, there’s a major issue that has prevented the RAM Disk trick from becoming a more widely deployed means to quicken up people’s sluggish PCs. Opening files, viewing documents, and loading games or apps would happen almost instantaneously every time because their data would just be copied to another portion of RAM. Technically, programs installed in a RAM drive would have near-instant load times because their data would be stored in the fastest type of memory available. The benefits of RAM Disks in terms of its speed advantage are for all to see.
The difference is just as stark for write speeds, hovering between 5-6 times for sequential and 3-4 times for random. It about 7-8 times faster in sequential read speeds and almost 20 times faster in random read speeds for small amounts of data. While the M.2 drive is no slouch, the RAM Drive outpaces it by an order of magnitude. As expected, the RAM Disk vs SSD battle turned out to be a wipeout.
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To measure the difference in the read/write speeds between the RAM drive and the M.2 SSD on my company-issued laptop, I fired up CystalDiskMark 8, the industry-standard free tool to benchmark storage disks. Other forms of storage media, like HDDs and Optical drives, are even slower because of higher access times.
SSds, on the other hand, are further limited by the speed of the storage bus, such as SATA or USB. The biggest gain is because of higher maximum throughput, which, in the case of RAM drives, are only limited by the speed of the RAM, the data bus, and the processor. The performance gain is due to multiple factors, including access time, maximum throughput, and type of file system. The read/write speeds of a RAM drive is generally an order of magnitude faster than SSDs – the fastest form of secondary storage available in the market.
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It is sometimes referred to as a virtual RAM drive or software RAM drive and, is different from a hardware RAM drive that uses RAM chips to create super-fast battery-powered SSDs.
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Once you mount a RAM Disk, you would be able to use it as a regular secondary storage drive and even install programs on it. A RAM disk (also called a RAM Drive) is part of a computer’s random access memory that is specifically reserved to be treated as a regular storage drive by the operating system.
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