I recently got a Crucial E100 1TB SSD, and while the benchmarks show impressive read/write speeds of 5000/4500 MB/s with PCIe 4, I'm using it with PCIe 3. It's still performing well in CrystalDiskMark at around 3500 MB/s. However, when I try to extract a 25 GB game, it takes about a minute, which is roughly 300 MB/s. Why is my SSD performing like this in real-world situations? Is this a common issue with SSDs, even high-end ones? Could it be that real-world usage is more complicated than just looking at sequential benchmark speeds?
3 Answers
Is the game being extracted to the same drive? If that’s the case, the operation could take longer since it’s exhausting any cache the drive has quickly. This could definitely lead to slower speeds compared to benchmarks.
It sounds like your CPU might be the bottleneck during extraction. When you're extracting files, it puts a heavy load on your processor because it has to do the decompression and writing at the same time, which is way tougher than just writing data like in benchmarks.
You mentioned your SSD's pretty low usage during extraction, but this type of SSD uses QLC flash. That means it can slow down significantly once you hit the limits of its SLC cache. This slowdown is quite common, especially with QLC drives like yours. You might want to check your Task Manager to see if the SSD or CPU is the real limiting factor.
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