Is this the case? I don't know.HD does not have this limit
I never get an SSD but I know a few things about it, Is it worth buying an SSD knowing that it uses flash memory and this type of memory has a limit cycle of erasing / writing being q after that it is unusable? HD does not have this limit
SSD Goldenfir is good or bad?
NVMe (M.2) is faster because it is connected to the PCIe bus (of the uP) and not SATA which is connected to something other than the uP.you can also use NVMe, these are believed to be even faster than SSDs because they are closer to CPU.
EMP erases flash? Sure it can damage the parts due to inducing large current/voltage spikes, but erasing them?
If some electromagnetic effect caused the flash to be "erased" the part would have been damaged.
NVMe (M.2) is faster because it is connected to the PCIe bus (of the uP) and not SATA which is connected to something other than the uP.
I'd have to see this "fact" from some random idi*t on youtube. So many of the facts, inventiions, or proofs on youtube are not even worth the time to watch and are produced by people with no (or limited) technical knowledge. Just look on youtube for perpetual motion machines...I've seen videos on YouTube where people used low powered EMP on calculators, it wiped the memory of the calculators, and when turned on again, it functioned without problems. So I think low powered EMP might erase as well as damage. A low powered EMP might erase if the SSD is not powered up, and it might be damaged if it is powered up.
you said "believed to be faster"....it's a fact they are faster unless the vendors design is garbage.And they are not closer to the CPU?
I'd have to see this "fact" from some random idi*t on youtube. So many of the facts, inventiions, or proofs on youtube are not even worth the time to watch and are produced by people with no (or limited) technical knowledge. Just look on youtube for perpetual motion machines...
you said "believed to be faster"....it's a fact they are faster unless the vendors design is garbage.
True but both are many times faster than HDD.I was looking at a comparison between 120GB Western Digital Green M.2 and a Samsung SSD and they both seemed pretty equal in performance.
True but both are many times faster than HDD.
I agree there are some good technical articles on Youtube but they are vastly out-numbered by idiots trying to attract clicks. The EMP gun is nothing of the sort, it is a small PSU with a coil across its output. The coil produces a magnetic field that induces a voltage into nearby conductors, it will interfere with almost anything electronic, not necessarily in a destructive manner but it might disrupt normal operation. it has a very short range and I would guess is itself quite unreliable. Yes, it might also upset an SSD if you place the coil right over it but it would do the same to a HDD. SSD's are immune to strong magnetic fields while HDDs are easily erased, it is all a matter of how close you can get to them to induce a large enough voltage..
Incidentally, have you noticed that 99% of the fake technical videos include a hot-melt glue gun in them. I wonder how many professional and even hobby constructors hold their devices together with glue.
Brian.
FYI, the Western Digital is a SATA drive, not a NVMe which stands for Non-Volatile Memory Express (and interfaces with PCIe) it is much faster than SATA, which you originally stated " you can also use NVMe, these are believed to be even faster than SSDs because they are closer to CPU."I was looking at a comparison between 120GB Western Digital Green M.2 and a Samsung SSD and they both seemed pretty equal in performance.
Besides this modern SSDs have a program built into the microcontroller firmware that runs on the drive that performs wear leveling on the drive. So they are much less prone to premature wear.In most SSD use cases, you don't exhaust the lifetime by executing too many write/erase cycles. But there are probably cases with extreme SSD wear.
FYI, the Western Digital is a SATA drive, not a NVMe which stands for Non-Volatile Memory Express (and interfaces with PCIe) it is much faster than SATA, which you originally stated " you can also use NVMe, these are believed to be even faster than SSDs because they are closer to CPU."
I agree with betwixt that video isn't showing an EMP gun it's just generating a magnetic field. You could do the exact same thing with a bench top power supply and a coil of wire and cause disruptive interference. Besides your original claim about the memory being wiped wasn't the case from what I saw in that video. It looks more like the calculator shut off probably due to some voltage variation on some circuit that cause it to reset the calculator.
I still say it won't erase flash, just by how flash works, a large enough EMP that could cause a flash cell to erase would damage the part. Flash cell programming voltage is something around 12V and is produced by an on die buck-boost converter. To induce 12V with some sort of EMP device would also cause other parts of the flash device to experience induced 12V with the associated currents on stuff that normally only sees 1.5V so poof the circuits are damaged by a huge over voltage. Even if they've decreased the programming voltage on the latest generation of flash it would still be significantly higher than the logic voltages used and still uses a buck-boost converter to supply that voltage (which if induced anywhere else would damage the device).
Besides this modern SSDs have a program built into the microcontroller firmware that runs on the drive that performs wear leveling on the drive. So they are much less prone to premature wear.
One can find almost any video for almost anything you want.You cannot change the definition of EMP to suit your purpose, it is an EMP device, it causes electromagnetic pulse, a low powered one. If you want I can post videos of calculators being completely damaged by such a device.
That wasn't the point I was making, maybe you should read my post more carefully. You were claiming wrongly that the NVMe is no faster than an SATA SSD drive and used the 120GB Western Digital Green M.2 to claim that it matches the performance of a Samsung SATA SSD.And they are not faster?
I don't think you understand how much charge is required to change the state of a flash cell. To generate that much charge externally from an EMP will likely damage the rest of the die way before the charge in the flash cell is changed.The only way to find if it will be erased or damaged would be to do an EMP near an SSD.
So what is the point you are trying to make?SSDs durability is indicated by write/erase cycles, manufacturers mention this on their product page.
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