[6 Ways] How to Fix Samsung 980 Pro Slow Write Speed

Samsung 980 Pro is optimized for speed and is much faster than many SSDs. But some users can also encounter the Samsung 980 Pro slow write speed issue. Don't worry. Just read this tutorial to understand the reasons behind and learn 6 fixes to improve the 980 pro read write speeds.


By Phoebe / Updated on February 6, 2024

Share this: instagram reddit

Why is my Samsung 980 Pro so slow?


When testing disk speeds, I found one of my 980 pro drives has slowed significantly in both read and write speeds ~ 5500 read / ~ 4200 writes speeds (533k / 849k IOPS), while my other 980 pro drives have near the advertised read/write speeds of 7000/5000 (1M / 1M IOPS) respectively...? I have removed the drive and reinstalled it, wiped it cleaned, but no change?"

- Question from Samsung Community

Samsung 980 Pro SSD represents the pinnacle of solid-state drive technology, with lightning-fast read and write speeds that can significantly improve system performance. With a PCIe 4.0 interface and NVMe technology, this SSD delivers unparalleled data transfer rates, ensuring fast access to your files, apps, and games. That's not surprising considering the drive is rated for up to 7/5 GBps of sequential read/write throughput and 1 million IOPs.

However, the Samsung 980 Pro SSD has a lower write-durability rating than the previous SSD 970 Pro. So some users may find their Samsung 980 Pro slow write speed. The Samsung 980 Pro may experience SSD slowdown under certain conditions due to several factors, including:

High Temperature: When the temperature is too high, the SSD will slow down to prevent damage.

Heavy Workload: Lots of large file transfers or continuous writes can slow things down.

Inadequate drive capacity: If your disk does not have enough free space to hold more data, the write speed will suffer.

SSD wearing: Excessive writes may cause SSD to wear out, degrading the SSD's performance.

Outdated Software: If your SSD's software isn't up to date, it may not run as fast.

System Settings: The way your computer is set up affects the speed at which the SSD writes data.

Then how to fix the Samsung SSD slow write speed issue? Let's continue to read.


How to fix Samsung 980 Pro slow write speed

This part will introduce 6 ways to address the Samsung 980 Pro slow write speed issue. Follow the comprehensive guide below to increase your hard drive speed and make your Samsung SSD run faster and smoother.

Way 1. 4K Alignment to optimize Samsung 980 Pro

Optimizing drive performance with 4K alignment is a smart technology that ensures partitions are accurately aligned with the physical storage space on the disk. This alignment improves data processing efficiency and minimizes the need for the SSD to access multiple physical sections during file operations. Proper alignment significantly increases Samsung 980 Pro speeds, ensuring your SSD runs at peak performance.

To easily achieve 4K alignment for your Samsung 980 Pro SSD, consider using AOMEI Partition Assistant Professional, which comes with a user-friendly "Partition Alignment" feature designed specifically for SSD optimization.

Download Pro DemoWin 11/10/8.1/8/7
Secure Download

Here's a simple guide to aligning partitions to increase Samsung 980 Pro read write speed:

Step 1. Install and launch AOMEI Partition Assistant Pro to access your disks and partitions.

Step 2. Right-click the partition you want to align.

Step 3. Navigate to Advanced and select Partition Alignment from the options.


Step 4. In the pop-up window, select 4096 Sector for optimal alignment, or keep the default settings.


Step 5. Click OK to confirm and continue with the alignment process.

Step 6. Click Apply and Proceed in the upper left corner to start the alignment.


A system restart may be required for alignment changes to take effect, especially for system drives.
For Windows servers, consider exploring the Server Edition for extended functionality.

Way 2. Free up space on Samsung 980 Pro

As mentioned above, one of the reasons that Samsung SSD slow write speed is low disk space on the drive. The potential culprit could be unnecessary applications taking up valuable disk space. Clearing out these unused programs can help optimize your SSD's performance for more efficient tasks.

Follow these simple steps to remove unwanted apps:

Step 1. Press Windows + I keys to access Windows Settings.

Step 2. Click Apps.


Step 3. Select the Apps & features section to view all installed apps.

Step 4. Identify and select the rarely used software and click Uninstall.


Step 5. Repeat this process until all unnecessary programs are removed.

Consider moving installed programs to other drives instead of uninstalling them to free up space.
Explore more ways to free up SSD or HDD to further improve performance.

Way 3. Update the Samsung 980 Pro SSD firmware

If your Samsung 980 Pro very slow and isn't working properly, outdated firmware may be the course. Please follow the steps below to update the SSD firmware:

Step 1. Press the Win + X keys and select Device Manager from the menu.


Step 2. Locate and expand the Disk drives category, then right-click on the Samsung 980 Pro SSD and select Properties.


Step 3. In the Details tab, select Hardware Ids and click OK to save the changes.


Step 4. Open a web browser and search for the hardware ID you obtained. Then, visit the official firmware update page.

Step 5. Download the latest firmware and run the installer to install it on the SSD.

Once completed, verify that the SSD is functioning properly.

Way 4. Check Samsung 980 Pro SSD Health

Checking the health of your SSD is critical to identifying potential issues such as bad sectors or a damaged file system. Once you find out disk health issues, you can fix them in time to improve your SSD performance accordingly.

For this purpose, it is highly recommended to use the AOMEI Partition Assistant Pro discussed in Way 1. This comprehensive disk health analyst can help you check the Samsung 980 Pro health and fix this Samsung 980 Pro slow write speed issue.

Please follow these steps to check the health of your 980 Pro SSD:

Step 1. Start the program right-click on the drive you want to check and select Check Partition.


Step 2. Select the Check partition and fix errors in this partition by using chkdsk.exe option among the three available methods and click OK.


Step 3. After repairing the bad sectors on the target hard drive, click OK to continue.


After completing these steps, verify that the slow performance issue on your Samsung 980 Pro has been resolved.

Way 5. Run the TRIM Command

TRIM is an important command that helps your operating system manage data on your SSD efficiently. When you delete a file, the SSD's controller may not delete the associated data immediately, leaving the space occupied and unused. The TRIM command solves this problem by marking deleted data as unnecessary, allowing the SSD to reclaim and utilize space efficiently.

To execute the TRIM command to fix Samsung 980 Pro slow Windows 11/10, follow these simple steps:

Step 1. Open the search bar and type cmd, then right-click on Command Prompt and select Run as administrator.

Step 2. In an elevated command prompt window, enter the command:

fsutil behavior set DisableDeleteNotify


Step 3. If you receive a "1" indicating that TRIM is disabled, enter the command:

fsutil behavior setting DisableDeleteNotify 0

Step 4. Press Enter to enable TRIM functionality.

By enabling TRIM, you can ensure your SSD is operating optimally, managing data efficiently, and maximizing performance.

Way 6. Use Samsung Magician

Developed exclusively by Samsung, Samsung Magician is a comprehensive solution for managing and monitoring SSD performance. With a suite of features and tools tailored for SSD optimization, Samsung Magician enables users to effectively increase productivity. Designed specifically for Samsung SSDs, the software offers targeted ways to fix issues like slow write speeds and is especially beneficial for Samsung 980 Pro users.

Once you download and install Samsung Magician from the official Samsung website, the software will seamlessly detect your SSD and provide detailed information. The user interface displays various categories on the left, including drive details, performance benchmarks, diagnostic scans, over-provisioning, and performance optimization. Using these metrics, users can evaluate and improve the health and functionality of their SSD, ensuring optimal performance and longevity.

Final words

This article takes an in-depth look at the causes of the Samsung 980 Pro slow write speed issue and explores 6 ways to effectively mitigate the problem. It emphasizes the use of AOMEI Partition Assistant Professional as a comprehensive solution for enhancing SSD performance and functionality.

In addition to SSD performance enhancement, AOMEI Partition Assistant Professional Edition also provides a variety of functions. These include cloning HDD to SSD without reinstallation, conversion to GPT disk format without data loss, and the ability to allocate free space to the C drive, thereby expanding its capacity.

Phoebe · Staff Editor
Phoebe, an editor at AOMEI Technology, is dedicated to offering optimal solutions for Windows-related concerns, specializing in partition management, disk upgrades, data recovery, and more. During her free time, she enjoys indulging in reading, watching movies, and exploring her passion for cooking.