CrystalDiskMark RND4K Q1T1 Score Very Low

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CrystalDiskMark is a disk benchmark software. It allows you to know the read and write speed of the drive on your computer quickly. This software is used by many people because it provides save and accurate parameters for any users. You are able to utilize CrystalDiskMark to check an SSD (solid-state drive), HDD (hard drive), USB or memory card.


In the process of using CrystalDiskMark, you will be able to see scores of SEQ1M Q8T1, SEQ1M Q1T1, RND4K Q32T16 and RND4K Q1T1. In fact, CrystalDiskMark RND4K Q1T1 score always show very low than other. Now, you are able to try using CrystalDiskMark to prove that CrystalDiskMark RND4K Q1T1 score always very low. But, before you try this process, you need to check all the requirements. Make sure that your device is support to use this CrystalDiskMark software. After you ensure everything, next you are able to try use it. Additionally to checking CPU parameters, or checking configuration and hardware information, you are able to use CPU-Z software.


There are some steps that you can do to use CrystalDiskMark on PC. Here are steps by steps:

  • At the first step, you have to download and install CrystalDiskMark software.
  • When you are in the first interface, you will be able to see the full parameters. Also, you are able to view the total number of drives on the computer which you are using now as well as the amount that the drive uses.
  • In this step, you need to choose the drive to check the burning speed.
  • Afterwards, please click the All button to check, or select one of the four modes to check. The testing process will take approximately 4 to 10 minutes depending on the amount of data stored.

The results after checking the hard disk read and write speed will is going to generate different parameters.

Now, you have to pay attention to the sequential (seq) test mode. You will be able to see the hard drive read speed is 102.6 MB/s. While the hard drive’s write speed is 92.73 MB/s. Moreover, other parameters are going to own different meanings.

  • Seq Q32T1

In this mode, the data is read and written to the environs of the drive sequentially. In general, this sequential (seq) test mode is going to give you the fastest speed.

  • 4KiB Q8T8

In this mode, the data is read on the data areas  randomly, with Q being 8 and T being 8.

  • 4KiB Q32T1

In this mode which is use 4k file sizes, the random data is read and written on data areas Q is 32, T is 1.

  • 4KiB Q1T1

In this mode, the data is read and written on the data areas randomly with Q being 1 and T being 1.

As a result of this, the drive’s write and read speed is relatively fast, mainly the read speed of the drive. Now, you will be able to compare the result along with the performance information which are provided by the manufacturer. Also, you will be able to figure out if it is time for a newer and faster replacement.

As we explain above that CrystalDiskMark software has four methods to check read speed and write different data for the comparison. We think that it is a good idea to test their performance to make sure the drive is working right. Although you are able to discover a lots of tools on Windows 10, but you are able to choose CrystalDiskMark, which is a famous software. The software also offers you permission to do lots of tests to measure the reads and writes speeds of virtually any kind of the drive.

Now, you need to know and learn on four modes of CrystalDiskMark.


The CrystalDiskMark sequential test is always the ones with the highest results (scores). But, the mode is always representative of the real world perform. An example of a streaming read will be once you watch the on your PC, all of the data is located in one file, so it is very easy to quickly read it. After you copy a file, you will be able to do sequential reads and writes. For your information, CrystalMark is using 1MB file block size for this test. When you are using a PNY 240GB SSD on Windows 8 Pro and CrystalDiskMark 3.0.3 x64. The PNY 240GB SSD receives 337 MB/s for reads and 224 MB/s for writes. It seems not too bad, particularly considering the price.  You are going to notice those numbers are not as high as NewEgg (Amazon) display. But, it is normal for an SSD (Solid-state drive). Remember that the more it fills up, so the slower it receives.


Lots of people said that CrystalDiskMark 512K test seems kind of pleonastic to them. In fact, the results were pretty close to the CrystalDiskMark sequential test. We think that the 4K test is the most useful test to run. For any reason, I/O Operations Per Second (IOPS) is not showed at all. Even, if you hover over the results.


When you stick around over the mb/s bubbles in the middle, you will be able to see the IOPS result, which is has to be shown by default. The CrystalDiskMark 4K test is not as demanding as the QD 32 test. It only utilizes a single thread to access data from your drive. SSDs will be able to perform much better than HDDs due to SSDs physically do not have to move stuff around to access data. So, lots of small accesses which are located all over the place will cripple a normal HDD. For this case, if you do not have an SSD, we suggest you to have this one. Believe us that They are really important to own.


This test utilizes 4KB file sizes. Your PC is going to do lots of things in speed. But, it cannot do 32 things at the exact same point in time. So, it utilizes queues and buffers to track of requests which require to take place. Note that each of the queued requests only takes a small fraction of a second to complete. Therefore, you will be able to do lots of operations in a second of time. If you do that, say 0.10 seconds, you are able to perform 10 IOPS for random writes.

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