Old MBPro 15" late 2011 vs Evo860SSD - not fully compatible?

[Giuanniello]

I really can't understand how strange of a behaviour my old MBPro late 2011, it is one of those with faulty GPU whose mainboard has been changed under warranty, to give it new breed I upgraded the spinning drive with a Samsung EVO860 1TB SSD, it never worked as expected, the computer had sudden reboots till I replaced the RAM with two brand new modules under warranty by Corsair (great great service!).

With new RAM modules I also installed an old 500GB spinning HD which worked flawlessly and the computer didn't suffer high temperatures any longer and only reboot on rare occasions (I noticed that it only takes to start the app Photos to cause a reboot which tells me the GPU might still be cause of the problems).

I then put back in the Samsung SSD but only to boot it correctly it takes an humungous number of attempts and when it finally did it runs slow as a slouch, to say one if I want a preview over a photo off the finder it does but it won't preview an mp4 to say one, everything is amazing slow and I was figuring if there is some issue between the MBPro and the SSD, dunno if the latter needs some firmware upgrade or what might the problem be, I am even thinking to get a 1TB spinning disk with a good amount of cache as to speed up data access and solve the problem with it since I gave up the idea of using that computer if not as a file server and to download stuff.

Attaching here the info about the SSD so you might maybe able to tell me if there is something wrong with it.

Thank you so much

Giovanni

 

[Audit13]

Could it be a bad sata hard drive cable? I've replaced a few sata cables in a few 13" and one 15".

 

[Analias]

Enabling trim will help.

 

[Giuanniello]

Could it be a bad sata hard drive cable? I've replaced a few sata cables in a few 13" and one 15".

It works smooth with a spinning drive so I suppose not an issue but I could easily open it and make sure it is correctly inserted.

Thank you
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Enabling trim will help.

Did it, don't remember if through terminal or with a third party app but did it, any other test I might perform to find out?

Grazie

 

[Audit13]

It works smooth with a spinning drive so I suppose not an issue but I could easily open it and make sure it is correctly inserted.

Thank you

It has been my experience that a ssd is much more demanding than a spinning drive. The cable can work perfectly with a hard drive but not a SSD.

SOLVED: Why are hdd cables failing? - MacBook Pro 13" Unibody Early 2011

There are a few different issues here. The older systems had a SATA II (3.0 Gb/s) drive (the logic board it self could support SATA III drives but at the time Apple couldn't get them reliably. Apple also didn't qualify a SATA III drive with the older cable only a SATA II drive. Which is the... -...

www.ifixit.com

 

[Giuanniello]

So far if I try and restart the computer it always goes into recovery mode on its very own, it reaches the screen where it tells me that it can't install the OS, only way to restart it and have it boot into the OS is into safe mode, what could cause this?

Grazie

 

[Analias]

Did it, don't remember if through terminal or with a third party app but did it, any other test I might perform to find out?

Well you must've done it after this screenshot then.

Regardless though, no trim shouldn't cause extreme speed degradation, and the fact you are also having booting issues suggests another issue is at play. Maybe it just doesn't like the Samsung. I personally only use the cheap stuff (crucial, wd, Kingston) and they always seem to be fine.

I can also second the possibility of a dodgy sata cable. Working seemingly OK with a hdd but not with an ssd is plausible.