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I have 840, 850, 860, 870 series, they are pretty good SSDs, i only use Samsung SSD when i buy new ones, few bucks more (comparing to others), but the benefits are in the long run..
Yep, I have only ever used Samsung myself.
My cMP boot disk (840 EVO) has been in use for maybe 8-9 years.

Part of my regime is to never really delete anything……. just get more storage, so this reduces wear/tear on the drives.
 
Yep, I have only ever used Samsung myself.
My cMP boot disk (840 EVO) has been in use for maybe 8-9 years.

Part of my regime is to never really delete anything……. just get more storage, so this reduces wear/tear on the drives.
They last for decades, that's for sure! In the service that i help out, we have a few 850/860 EVOs that have gone twice past the declared TBW, even in Hard Disk Sentinel they have 0% health, and they still work as the first day, NO corruption, data loss or sinply dead drive! :D
So i came to a conclusion that you can't wear them out that simple..

But still, it's much safer to just add stuff and not delete anything, and not increase the TBW (Terra Byte Write) :D
 
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Overall, the best I can say is about a 30% decrease in app load time for some apps, but not all.

Surprising (and disappointing) result, but the SSD will stay in place and will soon host a Tiger install as well.
Not really, you already said the spinner almost saturates the SATA I bus so any SSD can't do much better than that in that bus.

Part of my regime is to never really delete anything……. just get more storage, so this reduces wear/tear on the drives.
It is also a good practice to leave plenty (I prefer ~20%) empty space to each drive in all occasions. This also reduces wear as the drive has space to do maintenance and not all files are always written to same spot.

The SSD that also work and is probably one of the best for a PowerPC is Samsung Evo 840 (or Pro).
I have couple of those and many Evo 850s to use in old machines. Another brand I use with vintage machines is Intel and their server lines because I have had good success getting them to work in old gear, and they only cost few euros second hand. Only once an Intel Server SSD has not worked in an old Mac but that was from a newer product line than the others, I used it somewhere else where it worked.

Crucials seems like hit or miss. Sometimes they work but not in all cases.

I believe only my very first SSD (Kingston) ever broke and it was only couple of years old at the time. It was a big loss as SSDs were super expensive back then. DriveDX also reports one of my Intel SSDs is 0% health but it seems to still work. I use it in non important tasks now. All my Samsungs display 98-100% health after years of use.

BTW. I only buy 2nd hand SATA SSDs for my vintage machines. No sense to buy new drives when these last so long and cost almost nothing. Also important to me is knowing what works, as we know not all drives do work in old Macs. And also worth noting that some machines do not accept bigger drives than 120GB. Even some G4s are like this.

Here are 3 examples waiting for deployment:
Evo-850set.jpg
 
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