Speed variations in new NVMe M.2 2TB drives occur unexpectedly.
Speed variations in new NVMe M.2 2TB drives occur unexpectedly.
It decreases from 2 gps to 37 m/s. After that, it varies (refer to the chart) between 300 m/s and 30 m/s.
Why is this an issue? What is it supposed to be doing, but isn't?
The problem is that it shouldn't be doing that. I've used many NVMe drives and they vary from 3Gbps to 1Gbps, but I've never experienced such low speeds. It also takes a long time to download files on this drive. The response times are always around 0.5 or 2, which is unusual.
Mine come with all the usual options—SATA, NVMe, two or four ports, plus Apple’s exclusive PCIe standard. They act like regular SSDs, but their read/write performance shifts based on what the device is handling. Have you seen them around the clock? If Task Manager works well (though it’s been pretty unreliable lately), that suggests a real problem. It’s not about CPU decoding or RAM; it seems the drive speed itself is influencing things. What files are you downloading and where did they come from? Also, I should have asked sooner—could you share your system details and the specific drive model?
I know they fluctuate, but changing from 2gbs constant to capping at 30 mps isn't what I expected. No, I was checking for variations in my drives, and there were differences. https://pcpartpicker.com/list/jv9tH2 The Kingston M.2 model I mentioned is the one on that page.
This behavior appears during continuous, single-file operations. It seems to shift between files as multiple copies are handled, or when downloading games, it waits for the CPU to process them—this is why Steam often causes CPU spikes during downloads, depending on available headroom. TechPowerUp conducted thorough tests with both synthetic and typical workloads: https://www.techpowerup.com/review/kings...-nvme-ssd/. If you're working with files of comparable sizes or similar games, compare your performance to theirs within a 5% range. Also, your M.2 slot setup has four slots, but only one connects directly to the CPU. The remaining ones route through the chipset; if other devices like USB ports, SATA, or audio are active during testing, they might affect how an M.2 drive performs in that slot. The Z690 chip features a robust x8 DMI 4.0 link to the CPU, though its capacity can still be exceeded by what you load through it. As Intel notes, this includes everything capable of communicating via the chipset—depending on your board’s configuration.