Troubleshoot So Does SSD Defrag help or hurt. Here is the easy to read, one page skinny.

[annaegorov]

Briefly explain your current issue(s)

ssd response time

Steps taken to resolve, but have been unsuccessful

defrag with MS Trim or something else.

Your current Antivirus

Eset

I just got this email from DiskTrix, about upgrading to V6 from v4. Discount here if interested: for $19.99 (33% Off) UltimateDefrag6​

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SSDs - Does Fragmentation Really Matter?​

If you've heard the common advice that "SSDs don't need defragmenting," you're not alone. In fact, it's a mantra echoed across tech forums, blogs, and even from operating system vendors themselves. But as with many widely accepted truths in tech, the reality is a little more nuanced—especially if you're the kind of person who wants every last drop of performance from your system.

The Mainstream View: SSDs Don't Need Defragging​

SSDs are fundamentally different from traditional spinning hard drives. They have no moving parts, no actuator arms, and no mechanical latency. So, unlike HDDs, the position of data on an SSD doesn't affect access speed—in theory.
Add to this the fact that modern SSDs use sophisticated Flash Translation Layers (FTLs), wear leveling, and TRIM commands to manage data placement and longevity. From this perspective, defragmentation seems unnecessary—or even harmful—since it could result in needless write amplification.
So, case closed? Not quite.

The Reality: Fragmentation Still Has Consequences​

What most people don't realize is that SSDs still operate at the level of Input/Output Operations Per Second (IOPS), and fragmentation can multiply the number of I/O requests needed to read a file.
Let’s take an example:

• A 500 MB file with 5,000 fragments = 5,000 separate I/O operations
• A 500 MB contiguous file = perhaps 10 or fewer I/O operations

Even if your SSD completes each request in just 100 microseconds, the fragmented file can take hundreds of milliseconds longer to read. That’s not a big deal for casual use, but for real-time workloads—such as media editing, simulations, game loads, or scientific computing—it adds up fast.

Why Fragmentation Matters on SSDs​

• More I/O operations = more latency. Each fragment is a separate command that must travel through the file system, disk scheduler, storage driver, and firmware.
• Cache and RAM usage increases. Fragmented files may not align optimally with read-ahead buffers or OS caching strategies.
• Performance dips can occur. Even on high-end NVMe SSDs, fragmentation can bottleneck performance under load.
• Power users care. If you're someone who obsesses over system benchmarks, boot times, or real-time responsiveness, this is where the difference becomes measurable.

The UltimateDefrag Advantage: SSD-Optimized Defragging​

At DiskTrix, we understand the physics and engineering behind data access patterns. That’s why UltimateDefrag includes a specialized SSD defrag algorithm that:

• Minimizes data movement to reduce unnecessary wear
• Targets large, fragmented files that can slow performance
• Optimizes file layout for sequential access—even on SSDs

We’re not advocating weekly full-drive defrags on your SSD—that would be overkill. But a targeted, intelligent defrag done occasionally can ensure that your system performs at its absolute peak.
It’s not about blindly following rules—it’s about understanding the underlying technology and using the right tools for the job.

In Summary​

While SSDs don’t suffer the same fate as HDDs when fragmented, that doesn’t mean fragmentation is irrelevant. If you're the kind of user who demands optimal performance and system cleanliness, fragmentation does matter—just on a smaller scale and in subtler ways.
UltimateDefrag can help you take back control of your SSD’s performance, intelligently and safely.
Because performance isn’t just about hardware—it’s about precision.

 

[piquiteco]

O&O Defrag does defrag SSDs. However it has special defrag modes that are designed specifically for SSDs. As you will see in the message, it recommends using their SOLID defrag. When Windows optimises SSDs, it does a defrag using a defrag method for SSDs.

 

[roger_m]

View attachment 289270

Noe that it says "We recommend using SOLID defragmentation."

 

[piquiteco]

Noe that it says "We recommend using SOLID defragmentation."

It's just that the image says it all. A picture is worth a thousand words.

 

[roger_m]

It's just that the image says it all. A picture is worth a thousand words.

I'm not sure what you mean.

 

[piquiteco]

I'm not sure what you mean.

I meant that SSD is just optimization, like in Windows. You can defragment if you want, ignore the message, and start defragmenting your SSD, but it doesn't bring any performance benefits, other than wearing out the SSD due to unnecessary writes, reducing its useful life.

 

[roger_m]

I meant that SSD is just optimization, like in Windows. You can defragment if you want, ignore the message, and start defragmenting your SSD, but it doesn't bring any performance benefits, other than wearing out the SSD due to unnecessary writes, reducing its useful life.

Read the text in the screenshot you posted. It actually says "We recommend using SOLID defragmentation" and then gives some more details.

 

[piquiteco]

Read the text in the screenshot you posted.

Yes, of course I saw it, I was the one who posted the screenshot.

It actually says "We recommend using SOLID defragmentation" and then gives some more details.

I understand what you're saying. The word defragmentation is commonly used because of mechanical HDDs. Hard disk drives are built differently from solid state drives. You can call it whatever you want. defragmentation or optimization. I recommend using the term optimization on SSDs because it can confuse less informed people who don't understand how SSDs work. The good news is that in Windows, your SSD is only optimized, nothing more than that. If you use a third-party disk defragmenter program, you may want to defragment your SSD, which will bring no benefit and, in turn, reduce its lifespan, depending on how much you use it. Defragmentation will reorganize a ton of your space, causing the lifespan of your SSD to be drastically reduced without any change in performance.

 

[monkeylove]

SOLID/Complete Method O&O Software

docs.oo-software.com

As a result of SOLID/Complete, fragments are first combined and then a second run is started which closes any gaps. The easiest and fastest way is of course to combine the fragments and possibly even reduce their number. Access will then be faster and the number of memory cells used will be reduced. If there are now many gaps between data, these will be filled with new data in the future, which then must be fragmented because there isn’t not enough space available for the entire file.

Upon completion of successful defragmentation, SOLID/Quick will also be run on SSDs to guarantee that the space gained and freed cells are used optimally. The result is an immediate improvement of performance and preservation of resources in the future.

 

[Parkinsond]

Yes, of course I saw it, I was the one who posted the screenshot.

I understand what you're saying. The word defragmentation is commonly used because of mechanical HDDs. Hard disk drives are built differently from solid state drives. You can call it whatever you want. defragmentation or optimization. I recommend using the term optimization on SSDs because it can confuse less informed people who don't understand how SSDs work. The good news is that in Windows, your SSD is only optimized, nothing more than that. If you use a third-party disk defragmenter program, you may want to defragment your SSD, which will bring no benefit and, in turn, reduce its lifespan, depending on how much you use it. Defragmentation will reorganize a ton of your space, causing the lifespan of your SSD to be drastically reduced without any change in performance.

That is why I only use Windows built-in tools for clearing temporary files and disk optimization.

 

[piquiteco]

SOLID/Complete Method O&O Software

docs.oo-software.com

Exactly, cells are organized into blocks and pages, with the block being the basic unit for write and erase operations.

 

[roger_m]

Yes, of course I saw it, I was the one who posted the screenshot.

I understand what you're saying. The word defragmentation is commonly used because of mechanical HDDs. Hard disk drives are built differently from solid state drives. You can call it whatever you want. defragmentation or optimization.

You may prefer to call it optimisation and that's fine. But it does actually defrag files. As you can see in my screenshot, on my PC it has defragmented over 164GB of data on my C drive this year. The results for D drive are not as clear, as there is some error in reporting the data for my second SSD.

 

[piquiteco]

You may prefer to call it optimisation and that's fine.

Yes, no problem, I understand that you know what you're talking about, and I'm not going to argue with you about it. If you use Run SOLID, that's the right way to defragment or optimize.

But it does actually defrag files. As you can see in my screenshot, on my PC it has defragmented over 164GB of data on my C drive this year. The results for D drive are not as clear, as there is some error in reporting the data for my second SSD.

Yes, but O&O is not 100% accurate in the data it reports in the history. I used it many times on the other SSD I have on my other laptop, I downloaded it on my desktop and installed O&O on that SSD just to clarify the post about whether "defragmenting SSD helps or hurts".

 

[piquiteco]

@roger_m My advice to you if you use your laptop or computer a lot and have SSDs installed in them, especially NVMEs, is not to use O&O or other third-party disk defragmenters too often. Use it occasionally and let the SSD and Windows take care of the trim automatically. I used an SSD for 3 years without doing any kind of optimization. I used RBX (RollBack Rx), which I believe you are familiar with, the application that takes snapshots, right? According to my research at the time, RBX prevented the SSD from performing trim because of the way it handled the SSD and did not interact directly with the disk. In short, to perform Trim, it was necessary to uninstall version 10x and restart the machine. In future versions, the feature to disable RBX without uninstalling it was implemented in the RBX product, but even so, it was necessary to restart your computer and then optimize it and run trim through Windows. So, I used RBX for three years, and when I uninstalled it, the SSD was still at 98% health. One day I'll take it and take several screenshots of the apps that check the health of the SSD, and you won't believe it, it's incredible. I bought this SSD in 2016, and the speed is the same as when I bought it. Now it's at 96% health. So here's a tip for anyone who wants their SSD to last for years, even decades: just use it normally, without worrying too much about it, don't abuse it either, one thing I'm sure of is that your SSD will still last even longer than your hard drive.

 

[Divine_Barakah]

As far as I know SSDs work differently. Those vendors are desperate to sell products no one will ever need. Why should I pay 30$ for a product when I can literally replace the whole SSD to the same price?

WD SN580 Gen 4 512 GB costs around $34

 

[Bot]

As far as I know SSDs work differently. Those vendors are desperate to sell products no one will ever need. Why should I pay 30$ for a product when I can literally replace the whole SSD to the same price?

WD SN580 Gen 4 512 GB costs around $34

You’re basically right that for most home users, paying $30 for an SSD “optimizer/defragger” is very hard to justify.

How SSDs handle “fragmentation”
SSDs don’t suffer from seek-time penalties like HDDs do. Internally they already:

• Use a flash translation layer (FTL) to remap logical blocks to physical cells
• Spread writes across cells (wear leveling)
• Rely on TRIM and garbage collection to keep performance stable

Because of that:

• Traditional defragmentation gives little to no real‑world speedup on SSDs
• Heavy defragging just adds writes, which is extra wear for no clear gain
• Windows already runs TRIM and very light consolidation automatically

So a third‑party “SSD defrag/optimizer” is, in most cases, just trying to improve on something the controller and OS already do well enough.

Cost vs. benefit
Your example shows the problem:

• SSD tool licence: around $30
• New 512 GB NVMe (like SN580): around $34

For most users, that money is better spent on:

• A bigger/faster SSD
• A good backup drive or backup service
• Maybe a decent monitoring/SMART tool (often free anyway)

A defrag product might still make sense if:

• You have mechanical HDDs that are heavily used (databases, VMs, lots of large file moves)
• You want specific features like file placement on HDDs (e.g. zone filing)

…but that’s about HDD tuning, not SSDs.

Practical advice

• On SSDs/NVMes: stick with Windows “Optimize Drives” (TRIM) + the SSD vendor’s own toolbox if they provide one.
• Avoid routine “full defrags” on SSDs – there’s no meaningful performance benefit.
• Focus on good backups and enough capacity. If the drive actually wears out, it’s straightforward to replace, as you noted.

So if your only reason to buy O&O (or similar) is “optimizing SSDs,” your skepticism is warranted. For most people, it’s not money well spent.