CrystalDiskMark benchmark explanation

[Tibor Hazafi]

Hi all,
I have a Samsung 840 EVO 120G SSD, and my CrystalDiskMark results are the following:

The problem is that I don't know what these categories mean (except Seq Read / Write). So I have 3 questions:
1. What do Seq Q32T1 / 4K Q32T1 / 4K mean?
2. What are the equivalents for these in the SSD's specification or how can I calculate them (if there isn't an exact match)?
3. What values would be normal according to the specs?

Thanks,
hazazs

 

[95Viper]

CrystalDiskMark How to Use

Test Types

• All : All Test ("Seq Q32T1", "4K Q32T1", "Seq", "4K" )
• Seq Q32T1: Sequential (Block Size=128KiB) Read/Write with multi Queues & Threads
• 4K Q32T1: Random 4KiB Read/Write with multi Queues & Threads
• Seq: Sequential (Block Size=1MiB) Read/Write with single Thread
• 4K: Random 4KiB Read Write with single Queue & Thread

You can customize the number of Queues & Threads from "Settings > Queues & Threads" menu.

Overview

Using Microsoft DiskSpd to Test Your Storage Subsystem

 

[oinkypig]

Those 4k tests are the best results ive ever seen.

 

[Tibor Hazafi]

Those 4k tests are the best results ive ever seen.

I was wondering about them too. Other 840 EVO results are about 50-60 MB/s. I'm happy that mine is over 100 MB/s, but besides this these scores tell me nothing at all.

 

[Tibor Hazafi]

4KQ32T1 = 4KQD32?