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> So you consider copying large files a fringe / or edge case, No, I consider sustained writing at maximum speed for more than several minutes to be an edge ca

> So you consider copying large files a fringe / or edge case, No, I consider sustained writing at maximum speed for more than several minutes to be an edge case. Consider the 240GB ADATA in the article. It can write over 400MB/sec for over 150 seconds before throttling kicks in. That's 1/4 of the entire drive. The Crucial drive has no problem doing at least 100MB/sec for the entire capacity of the drive, if that's your thing. > but personally, I'm not so sure. Especially for people who buy cheap 1TB or 2TB+ SSDs, they may be unpleasantly surprised when they copy some media files You can write 40GB to 3 of these drives and never even throttle. That's an entire Blu Ray, and it would occupy 1/3 of the 120GB drives tested. If someone has a use case that involves writing 50% of the drive at full speed over and over again, a cheap SSD is not the ideal tool. But that's really an edge case for a budget 120GB drive. > or start downloading a game from steam. The slowest SSDs in the article can consume the entire bandwidth of a Gigabit internet connection until the drive is full. The ADATA has dramatic throttling, but it only kicks in after 60GB written at full speed. You're not going to encounter these throttling scenarios under normal operations. If you're only getting a drive for 100GB sequential transfers over and over at the highest possible speed, get something else. But then again, you're probably not looking at $20 120GB SSDs anyway.

louwrentius 4y ago
> The Crucial drive has no problem doing at least 100MB/sec for the entire capacity of the drive, if that's your thing. That's quite slow to be frank, as stated slower than an HDD and that's quite disappointing for an unsuspecting consumer who does want to transfer larger files. P.S. see the footnote where after 1 hour or about 300 GB the transfer speed start to collapse entirely. > Consider the 240GB ADATA in the article. It can write over 400MB/sec for over 150 seconds before throttling kicks in. That's 1/4 of the entire drive. > No, I consider sustained writing at maximum speed for more than several minutes to be an edge case. It's not specifically about the small 120/240 GB SSDs, the 1TB Crucial shows that larger drives exhibit the same problem. If your SSD is 1TB or 2TB, that 50GB transfer doesn't feel so enormous anymore as compared to drive size. I'm going to agree that most people won't have a use case for transferring large files. I've actually repurposed the Kingston as an OS drive for my lab server. But the key objective of my blog post is to show that cheap SSDs exhibit this behaviour in the first place. Many people are not aware / don't know. They can still decide that it's no problem for them. But for some, it will be an issue. This is not about the smal <$20 SSDs, but about the concept of cheap SSDS often having terrible sustained write speeds, regardless of capacity. And many review sites don't highlight this issue or actually show when the throttling kicks in.

louwrentius 4y ago

> The Crucial drive has no problem doing at least 100MB/sec for the entire capacity of the drive, if that's your thing. That's quite slow to be frank, as stated slower than an HDD and that's quite disappointing for an unsuspecting consumer who does want to transfer larger files. P.S. see the footnote where after 1 hour or about 300 GB the transfer speed start to collapse entirely. > Consider the 240GB ADATA in the article. It can write over 400MB/sec for over 150 seconds before throttling kicks in. That's 1/4 of the entire drive. > No, I consider sustained writing at maximum speed for more than several minutes to be an edge case. It's not specifically about the small 120/240 GB SSDs, the 1TB Crucial shows that larger drives exhibit the same problem. If your SSD is 1TB or 2TB, that 50GB transfer doesn't feel so enormous anymore as compared to drive size. I'm going to agree that most people won't have a use case for transferring large files. I've actually repurposed the Kingston as an OS drive for my lab server. But the key objective of my blog post is to show that cheap SSDs exhibit this behaviour in the first place. Many people are not aware / don't know. They can still decide that it's no problem for them. But for some, it will be an issue. This is not about the smal <$20 SSDs, but about the concept of cheap SSDS often having terrible sustained write speeds, regardless of capacity. And many review sites don't highlight this issue or actually show when the throttling kicks in.