One of the most important hardware components inside your computer is obviously the drive that holds the operating system. If you have Windows installed on a slow hard drive, it doesn’t matter how powerful the other components like CPU and memory are, the system will boot slower, load programs more slowly, and lag quite badly while multitasking.
This is a reason why high-performance hard drives and especially SSD’s are so popular these days. It’s because upgrading just that one part can breath new life into a computer and make it feel a lot more snappy to use. The actual hard disk or SSD performance under Windows is determined by several factors so how do you know if your drive is performing well, needs tweaking or is even holding the system back?
Thankfully, the internet is full of websites to show you how well nearly every drive around can perform. Also, loads of programs are available that can give your hardware a performance test to see how well it’s doing. There are many paid suites around like PCMark or Passmark that can test the whole system, but here we list for you 10 free tools that are specifically designed for testing the performance of hard drives and SSD drives.
All tools were tested on Windows 10 64-bit and are also compatible with Windows 7 and 8.

Crystal Disk Mark: Crystal Disk Mark is another popular benchmark which allows us to measure both sequential read/write speeds, as well as random read/, write speeds for a variety of different storage products including HDDs, SSDs, memory cards, networked drives, and more. With this benchmark, tests can be run using both random fill (incompressible data) and 0 fill (compressible data).

Iometer: Originally developed by Intel and announced at Intel Developer Forum in 1998, Iometer has quickly become one of the most popular storage testing utilities in the industry. Although the interface for the utility isn’t as user-friendly as any of the other utilities in our list, Iometer makes up for this with it is the ability to be configured for a wide variety of workloads as well as more in-depth testing and reporting capabilities.



ATTO Disk Benchmark: ATTO Disk Benchmark is a popular portable tool used by many hardware review websites and is also recommended by manufacturers such as Corsair to run speed tests on SSD drives. All the tests are sequential and are taken for reading and write operations using block sizes of 512 bytes up to 64MB. A test file length of between 64KB and 32GB is also available, both are selectable from drop-down menus.

AS SSD Benchmark: AS SSD looks a bit like CrystalDiskMark and is designed primarily to benchmark SSD drives. It is another popular tool being used by hardware sites such as AnandTech’s SSD benchmark charts  (which also includes ATTO) to show their results. The program uses incompressible data so some SSD’s will show much lower scores than usual if they compress their data.

Useful links..
https://spcresults.org/benchmarks
https://www.storagereview.com/node/3894
https://www.raymond.cc/blog/measure-actual-hard-disk-perfomance-under-windows/
https://www.custompcreview.com/articles/top-5-best-free-tools-testing-ssd-hdd-performance-windows/
https://www.atto.com/disk-benchmark/
https://download.zone/crystaldiskmark-portable-software-download/
https://www.softpedia.com/get/System/Benchmarks/ATTO-Disk-Benchmark.shtml
https://www.techspot.com/downloads/7184-atto-disk-benchmark.html
https://portableapps.com/apps/utilities/crystaldiskmark_portable
https://www.filehorse.com/download-atto-disk-benchmark/

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